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【结 构 式】

【分子编号】25239

【品名】3-chloroaniline; 3-chlorophenylamine

【CA登记号】108-42-9

【 分 子 式 】C6H6ClN

【 分 子 量 】127.57308

【元素组成】C 56.49% H 4.74% Cl 27.79% N 10.98%

与该中间体有关的原料药合成路线共 11 条

合成路线1

该中间体在本合成路线中的序号:(X)

The reaction of 3-chloroaniline (X) with choral hydrate (XI) and hydroxylamine gives isonitroso-3-chloroacetanilide (XII), which is cyclized by means of H2SO4 to 4-chloroisatin (XIII). Chlorination of (XIII) with SO2Cl2 affords 4,5-dichloroisatin (XIV), which is oxidized with H2O2 yielding 5,6-dichloroanthranilic acid (XV). The reduction of (XV) with borane in THF gives 6-amino-2,3-dichlorobenzyl alcohol (XVI), which by reaction with SOCl2 in benzene is converted to 6-amino-2,3-dichlorobenzyl chloride (XVII). This compound is condensed with ethyl glycinate (XVIII) by means of triethylamine in refluxing methylene chloride to give ethyl N-(6-amino-2,3-dichlorobenzyl)glycinate (VII), which is cyclized with cyanogen bromide (VIII) in toluene affording ethyl 5,6-dichloro-3,4-dihydro-2-(1H)-iminoquinazoline-3-acetate (IX). Finally, this compound is submitted to a new cyclization by means of triethylamine in refluxing ethanol.

1 Jenks, T.A.; Beverung, W.N.Jr.; Partyka, R.A. (Bristol-Myers Squibb Co.); Preparation of 6,7-dichloro-1,5-dihydroimidazo[2,1-b]quinazolin-2(3H)-one. CA 1137474 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VII) 29087 ethyl 2-[(6-amino-2,3-dichlorobenzyl)amino]acetate C11H14Cl2N2O2 详情 详情
(VIII) 28017 cyanic bromide;cyanogen bromide 506-68-3 CBrN 详情 详情
(IX) 29088 ethyl 2-[5,6-dichloro-2-imino-1,4-dihydro-3(2H)-quinazolinyl]acetate C12H13Cl2N3O2 详情 详情
(X) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(XI) 14018 2,2,2-Trichloro-1,1-ethanediol; Chloral hydrate 302-17-0 C2H3Cl3O2 详情 详情
(XII) 29089 N-(3-chlorophenyl)-2-(hydroxyimino)acetamide C8H7ClN2O2 详情 详情
(XIII) 29090 4-chloro-1H-indole-2,3-dione C8H4ClNO2 详情 详情
(XIV) 29091 4,5-dichloro-1H-indole-2,3-dione C8H3Cl2NO2 详情 详情
(XV) 29092 6-amino-2,3-dichlorobenzoic acid C7H5Cl2NO2 详情 详情
(XVI) 29093 (6-amino-2,3-dichlorophenyl)methanol C7H7Cl2NO 详情 详情
(XVII) 29094 3,4-dichloro-2-(chloromethyl)aniline C7H6Cl3N 详情 详情
(XVIII) 10309 ethyl 2-aminoacetate; Glycine ethyl ester 459-73-4 C4H9NO2 详情 详情

合成路线2

该中间体在本合成路线中的序号:(II)

By condensation of 1-chloro-4-phenylphthalazine (I) with 3-chloroaniline (II) by means of powdered Cu at 100 C.

1 Hayashi, E.; Oishi, E.; Marinaka, Y.; Mori, M.; Kanayama, T. (Mitsubishi Chemical Corp.); 4-Phenylphthalazine derivs.. GB 2063249 .
2 Castaner, J.; Blancafort, P.; Serradell, M.N.; MY-5445. Drugs Fut 1983, 8, 6, 507.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 36081 1-chloro-4-phenylphthalazine C14H9ClN2 详情 详情
(II) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情

合成路线3

该中间体在本合成路线中的序号:(IV)

The acetylation of 1,2,3,4-tetrahydroisoquinoline (I) with acetic anhydride gives 2-acetyl-1,2,3,4-tetrahydroisoquinoline (II), which is sulfonated with chloro sulfonic acid in methylene chloride yielding 2-acetyl-7-chlorosulfonyl-1,2,3,4-tetrahydroisoquinoline (III). The reaction of (III) with 3-chloroaniline (IV) and triethylamine in refluxing acetone affords 2-acetyl-7-(3-chlorophenylamino sulfonyl)-1,2,3,4-tetrahydroisoquinoline (V), which is deacetylated by a treatment with HCl in refluxing butanol to 7-(3-chlorophenylaminosulfonyl)-1,2,3,4-tetrahydroisoquinoline (VI). Finally, this compound is condensed with bis(chlorosulfonyl)imide (VII) [prepared with chlorosulfonic acid (VIII) and chlorosulfonyl isocyanate (IX)] in acetonitrile containing triethylamine.

1 Ali Fadia E. (SmithKline Beecham Corp.); N,N'-Bis[substituted-1,2,3,4-tetrahydroisoquinolino]disulfonylimides and antiallergic compositions and method of use. DD 158240; EP 0038177; US 4135935 .
2 Serradell, M.N.; Chu, S.S.; Castaner, J.; SKF-88046. Drugs Fut 1985, 10, 1, 42.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 14124 1,2,3,4-Tetrahydroisoquinoline 91-21-4 C9H11N 详情 详情
(II) 29003 1-[3,4-dihydro-2(1H)-isoquinolinyl]-1-ethanone C11H13NO 详情 详情
(III) 29004 2-acetyl-1,2,3,4-tetrahydro-7-isoquinolinesulfonyl chloride C11H12ClNO3S 详情 详情
(IV) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(V) 29005 2-acetyl-N-(3-chlorophenyl)-1,2,3,4-tetrahydro-7-isoquinolinesulfonamide C17H17ClN2O3S 详情 详情
(VI) 29006 N-(3-chlorophenyl)-1,2,3,4-tetrahydro-7-isoquinolinesulfonamide C15H15ClN2O2S 详情 详情
(VII) 29007 Bis(chlorosulfonyl)imide HCl2NO4S2 详情 详情
(VIII) 29008 Chlorosulfonic acid 7790-94-5 HClO3S 详情 详情
(IX) 14101 Chlorosulfonyl isocyanate 1189-71-5 CClNO3S 详情 详情

合成路线4

该中间体在本合成路线中的序号:(I)

The acetylation of 3-chloroaniline (I) with refluxing acetic anhydride gives the corresponding anilide (II), which is nitrated with HNO3/H2SO4 yielding 5-chloro-2-nitroacetanilide (III). The hydrolysis of (III) with hot conc. H2SO4 affords 5-chloro-2-nitroaniline (IV), which is treated with NaNO2/HCl to afford the corresponding diazonium salt (V). The reaction of (V) with sodium azide gives 2-nitro-5-chlorophenylazide (VI), which is cyclized to 5-chlorobenzofurazan-3-oxide (VII) in refluxing toluene. The condensation of (VII) with malononitrile (VIII) in DMF in the presence of a catalytic amount of triethylamine afforded a mixture of the isomeric quinoxaline-di-N-oxides (IX and X), which were separated by flash chromatography. The 7-chloro isomer (XI) was then submitted to diazotization with tert-butyl nitrite in acetonitrile in the presence of cupric chloride, which effected a Sandmeyer reaction to give the 2,6-dichloro derivative (XI). N-Alkylation of 3-(N,N-dimethylamino)propylamine (XII) with intermediate (XI) in dichloromethane in the presence of potassium carbonate, followed by treatment with concentrated hydrochloric acid in acetone afforded the title compound.

1 Monge, A.; et al.; Hypoxia-selective agents derived from quinoxaline 1, 4-di-N-oxides. J Med Chem 1995, 38, 10, 1786.
2 Monge, A.; et al.; Hypoxia-selective agents derived from 2-quinoxalinecarbonitrile 1,4-di-N-oxides. 2. J Med Chem 1995, 38, 22, 4488.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(II) 25240 N-(3-chlorophenyl)acetamide 588-07-8 C8H8ClNO 详情 详情
(III) 25241 N-(5-chloro-2-nitrophenyl)acetamide 39163-92-3 C8H7ClN2O3 详情 详情
(IV) 15709 5-chloro-2-nitrophenylamine; 5-chloro-2-nitroaniline 1635-61-6 C6H5ClN2O2 详情 详情
(V) 25242 5-chloro-2-nitrobenzenediazonium chloride 2589-71-1 C6H3Cl2N3O2 详情 详情
(VI) 25243 2-azido-4-chloro-1-nitrobenzene C6H3ClN4O2 详情 详情
(VII) 25244 7-chloro-4a,8a-dihydro-1-quinoliniumolate C9H8ClNO 详情 详情
(VIII) 12061 Malononitrile 109-77-3 C3H2N2 详情 详情
(IX) 25245 2-amino-6-chloro-3-cyano-1,4-quinoxalinediiumdiolate C9H5ClN4O2 详情 详情
(X) 25246 3-amino-6-chloro-2-cyano-1,4-quinoxalinediiumdiolate C9H5ClN4O2 详情 详情
(XI) 25247 2,6-dichloro-3-cyano-1,4-quinoxalinediiumdiolate C9H3Cl2N3O2 详情 详情
(XII) 25248 N-(3-aminopropyl)-N,N-dimethylamine; N(1),N(1)-dimethyl-1,3-propanediamine 109-55-7 C5H14N2 详情 详情

合成路线5

该中间体在本合成路线中的序号:(VIII)

Pyrimidinyl pyrazole (III) was prepared by condensation of diketone (I) with 2-hydrazinopyrimidine (II). Subsequent Mannich reaction with N-(3-chlorophenyl)piperazine (IV) and paraformaldehyde furnished piperazinyl propanone (V). This was reduced to alcohol (VI) with NaBH4. Alcohol dehydration employing p-toluenesulfonic acid yielded the title compound, that was finally isolated as the hydrochloride salt. The intermediate N-(3-chlorophenyl)piperazine (IV) has been obtained by cyclization of bis(2-chloroethyl)amine (VII) with 3-chloroaniline (VIII) by means of Na2CO3 in refluxing butanol.

1 DE 2038503; US 3723433 .
2 Ejima, A.; Sugimori, M.; Mitsui, I. (Daiichi Pharmaceutical Co., Ltd.); Pyrimidinylpyrazole deriv.. EP 0784055; JP 1997048776; US 5852019; WO 9610024 .
3 Ishii, M.; Ejima, A.; Hirotani, K.; Iwahana, M.; Sugimori, M.; Mitsui, I.; Naito, H.; Nakamura, Y.; Synthesis and antitumor activity of novel pyrimidinyl pyrazole derivatives. Chem Pharm Bull 1999, 47, 12, 1679.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 41449 3-(ethoxymethylene)-2,4-pentanedione C8H12O3 详情 详情
(II) 41450 2-hydrazinopyrimidine C4H6N4 详情 详情
(III) 41451 1-[5-methyl-1-(2-pyrimidinyl)-1H-pyrazol-4-yl]-1-ethanone C10H10N4O 详情 详情
(IV) 22114 1-(3-chlorophenyl)piperazine 6640-24-0 C10H13ClN2 详情 详情
(V) 41452 3-[4-(3-chlorophenyl)-1-piperazinyl]-1-[5-methyl-1-(2-pyrimidinyl)-1H-pyrazol-4-yl]-1-propanone C21H23ClN6O 详情 详情
(VI) 41453 3-[4-(3-chlorophenyl)-1-piperazinyl]-1-[5-methyl-1-(2-pyrimidinyl)-1H-pyrazol-4-yl]-1-propanol C21H25ClN6O 详情 详情
(VII) 21583 2-chloro-N-(2-chloroethyl)-1-ethanamine; Bis(2-chloroethyl)amine; 1,1'-iminobis(2-chloroethane); N,N-bis(2-chloroethyl)amine 821-48-7 C4H9Cl2N 详情 详情
(VIII) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情

合成路线6

该中间体在本合成路线中的序号:(I)

The reductive alkylation of 3-chloroaniline (I) with L-S-trityl-N-Boc-cysteinal (II) in the presence of sodium triacetoxyborohydride produced amine (III). Chloroacetylation of (III) followed by cesium carbonate-induced cyclization of the resulting chloroacetamide (IV) furnished the protected piperazinone (V). The S-trityl group of (V) was deprotected by treatment with silver nitrate and pyridine, yielding thiol (VI), which was subsequently alkylated with ethyl iodide to give thioether (VII). Sulfur oxidation by means of magnesium monoperoxyphthalate in methanol afforded sulfone (VIII). Then, acid deprotection of the Boc protecting group of (VIII) provided the intermediate piperazinone (IX).

1 Anthony, N.J.; Ciccarone, T.M.; Gomez, R.P.; Hutchinson, J.H.; Williams, T.M.; Dinsmore, C.J.; Stokker, G.E. (Merck & Co., Inc.); Inhibitors of farnesyl-protein transferase. EP 0820445; JP 1998511098; US 5856326; WO 9630343 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(II) 17953 tert-butyl (1R)-1-formyl-2-(tritylsulfanyl)ethylcarbamate C27H29NO3S 详情 详情
(III) 42109 tert-butyl (1R)-2-(3-chloroanilino)-1-[(tritylsulfanyl)methyl]ethylcarbamate C33H35ClN2O2S 详情 详情
(IV) 42110 tert-butyl (1R)-2-[3-chloro(2-chloroacetyl)anilino]-1-[(tritylsulfanyl)methyl]ethylcarbamate C35H36Cl2N2O3S 详情 详情
(V) 42111 tert-butyl (2R)-4-(3-chlorophenyl)-5-oxo-2-[(tritylsulfanyl)methyl]-1-piperazinecarboxylate C35H35ClN2O3S 详情 详情
(VI) 42112 tert-butyl (2R)-4-(3-chlorophenyl)-5-oxo-2-(sulfanylmethyl)-1-piperazinecarboxylate C16H21ClN2O3S 详情 详情
(VII) 42113 tert-butyl (2R)-4-(3-chlorophenyl)-2-[(ethylsulfanyl)methyl]-5-oxo-1-piperazinecarboxylate C18H25ClN2O3S 详情 详情
(VIII) 42114 tert-butyl (2R)-4-(3-chlorophenyl)-2-[(ethylsulfonyl)methyl]-5-oxo-1-piperazinecarboxylate C18H25ClN2O5S 详情 详情
(IX) 42115 (5R)-1-(3-chlorophenyl)-5-[(ethylsulfonyl)methyl]-2-piperazinone C13H17ClN2O3S 详情 详情

合成路线7

该中间体在本合成路线中的序号:(I)

The synthesis of the intermediate (chlorophenyl)piperazinone (VIII) has been reported by two procedures. The hydrochloride salt prepared from 3-chloroaniline (I) was treated with 2-oxazolidinone (II) at 160 C to produce the aryl ethylenediamine (III), which was subsequently protected as the N-Boc derivative (IV). Acylation of aniline (IV) with chloroacetyl chloride (V) gave the chloroacetamide (VI). This was then cyclized to the piperazinone (VII) by treatment with K2CO3 in hot DMF. Further acid deprotection of the Boc group of (VII) afforded the intermediate (VIII).

1 Anthony, N.J.; Ciccarone, T.M.; Gomez, R.P.; Hutchinson, J.H.; Williams, T.M.; Dinsmore, C.J.; Stokker, G.E. (Merck & Co., Inc.); Inhibitors of farnesyl-protein transferase. EP 0820445; JP 1998511098; US 5856326; WO 9630343 .
2 Williams, T.M.; Dinsmore, C.J.; Hutchinson, J.H. (Merck & Co., Inc.); Inhibitors of prenyl-protein transferase. EP 1014984; WO 9909985 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(II) 21456 1,3-oxazolidin-2-one 497-25-6 C3H5NO2 详情 详情
(III) 37091   C7H5Cl2FNO2P 详情 详情
(IV) 47286 tert-butyl 2-(3-chloroanilino)ethylcarbamate C13H19ClN2O2 详情 详情
(V) 11296 2-Chloroacetyl chloride; Chloroacetic chloride 79-04-9 C2H2Cl2O 详情 详情
(VI) 47287 tert-butyl 2-[3-chloro(2-chloroacetyl)anilino]ethylcarbamate C15H20Cl2N2O3 详情 详情
(VII) 47288 tert-butyl 4-(3-chlorophenyl)-3-oxo-1-piperazinecarboxylate C15H19ClN2O3 详情 详情
(VIII) 47289 1-(3-chlorophenyl)-2-piperazinone C10H11ClN2O 详情 详情

合成路线8

该中间体在本合成路线中的序号:(I)

In an alternative procedure, 3-chloroaniline (I) was acylated with chloroacetyl chloride (V) to produce chloroacetamide (IX). Displacement of the chloride group of (IX) with ethanolamine (X) gave rise to the amide alcohol (XI), which was then cyclized to the piperazinone (VIII) under Mitsunobu conditions.

1 Cowen, J.A.; Askin, D.; McWilliams, J.C.; Maligres, P.E.; McCauley, J.A. (Merck & Co., Inc.); Process for making farnesyl-protein transferase inhibitors. WO 0001691 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(V) 11296 2-Chloroacetyl chloride; Chloroacetic chloride 79-04-9 C2H2Cl2O 详情 详情
(VIII) 47289 1-(3-chlorophenyl)-2-piperazinone C10H11ClN2O 详情 详情
(IX) 47290 2-chloro-N-(3-chlorophenyl)acetamide C8H7Cl2NO 详情 详情
(X) 10259 Ethanol amine;Ethanolamine;2-Aminoethanol; 2-Amino-1-ethanol;2-Aminoethyl alcohol 141-43-5 C2H7NO 详情 详情
(XI) 47291 N-(3-chlorophenyl)-2-[(2-hydroxyethyl)amino]acetamide C10H13ClN2O2 详情 详情

合成路线9

该中间体在本合成路线中的序号:(II)

Condensation of 2,6-dichloropurine (I) with 3-chloroaniline (II) in hot pentanol yielded the 6-anilino purine (III). This was then alkylated at the N-9 with iodoethane and K2CO3 to afford (IV). Finally, displacement of the 2-chloro of (IV) with cis-1,2-cyclohexanediamine (V) at 150 C furnished the title compound.

1 Imbach, P.; Capraro, H.G.; Furet, P.; Mett, H.; Meyer, T.; Zimmermann, J.; 2,6,9-Trisubstituted purines: Optimization towards highly potent and selective CDK1 inhibitors. Bioorg Med Chem Lett 1999, 9, 1, 91.
2 Capraro, H.-G.; Zimmermann, J.; Furet, P.; Peterli, P. (Novartis AG); Purine derivs. and processes for their preparation. JP 1999514336; WO 9716452 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 25254 2,6-dichloro-9H-purine 5451-40-1 C5H2Cl2N4 详情 详情
(II) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(III) 59602 2-chloro-N-(3-chlorophenyl)-9H-purin-6-amine; N-(3-chlorophenyl)-N-(2-chloro-9H-purin-6-yl)amine C11H7Cl2N5 详情 详情
(IV) 59603 2-chloro-N-(3-chlorophenyl)-9-ethyl-9H-purin-6-amine; N-(2-chloro-9-ethyl-9H-purin-6-yl)-N-(3-chlorophenyl)amine C13H11Cl2N5 详情 详情
(V) 37409 (1R,2S)-2-aminocyclohexylamine; (1R,2S)-1,2-cyclohexanediamine 1121-22-8 C6H14N2 详情 详情

合成路线10

该中间体在本合成路线中的序号:(I)

The reaction of 3-chloroaniline (I) with ethanolamine (II) by means of 47% HBr by heating at 170 C gives N-(3-chlorophenyl)ethylenediamine (III), which is condensed with ethyl 2-bromopropionate (IV) by means of triethylamine in refluxing toluene yielding the alanine derivative (V). The cyclization of (V) with refluxing 2N HCl affords the piperazinone (VI), which is reduced with LiAlH4 in ethyl ether providing 1-(3-chlorophenyl)-3-methylpiperazine (VII). The alkylation of (VII) with 1-bromo-3-chloropropane (VIII) by means of NaOH in acetone/water gives 4-(3-chlorophenyl)-1-(3-chloropropyl)-2-methylpiperazine (IX), which is condensed with the sodium salt of 1,2,4-triazolo[4,3-a]pyridin-3(2H)-one (X) in refluxing xylene/isobutanol yielding the target compound as a racemic mixture (XI). Finally, this compound is submitted to optical resolution with L-(+)-tartaric acid (XII).

1 Giannangeli, M.; Gazzolla, N.; Luparini, M.R.; Magnani, M.; Mabilia, M.; Picconi, G.; Tomaselli, M.; Baiocchi, L.; Effect of modifications of the alkylpiperazine moiety of trazodone on 5HT2A and alpha1 receptor binding affinity. J Med Chem 1999, 42, 3, 336.
2 Baiocchi, L.; Cioli, V. (Angelini Group); Pharmacologically active enantiomers. EP 0707587; JP 1996512036; WO 9501354 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(II) 10259 Ethanol amine;Ethanolamine;2-Aminoethanol; 2-Amino-1-ethanol;2-Aminoethyl alcohol 141-43-5 C2H7NO 详情 详情
(III) 34091 N(1)-(3-chlorophenyl)-1,2-ethanediamine; N-(2-aminoethyl)-N-(3-chlorophenyl)amine C8H11ClN2 详情 详情
(IV) 19460 ethyl 2-bromopropanoate; 2-Bromopropionic acid ethyl ester 535-11-5 C5H9BrO2 详情 详情
(V) 28373 ethyl 2-[[2-(3-chloroanilino)ethyl]amino]propanoate C13H19ClN2O2 详情 详情
(VI) 28374 1-(3-chlorophenyl)-3-methyl-2-piperazinone C11H13ClN2O 详情 详情
(VII) 28375 1-(3-chlorophenyl)-3-methylpiperazine C11H15ClN2 详情 详情
(VIII) 10358 1-Bromo-3-chloropropane 109-70-6 C3H6BrCl 详情 详情
(IX) 28376 4-(3-chlorophenyl)-1-(3-chloropropyl)-2-methylpiperazine C14H20Cl2N2 详情 详情
(X) 28377 [3-oxo[1,2,4]triazolo[4,3-a]pyridin-2(3H)-yl]sodium C6H4N3NaO 详情 详情
(XI) 28378 2-[3-[4-(3-chlorophenyl)-2-methyl-1-piperazinyl]propyl][1,2,4]triazolo[4,3-a]pyridin-3(2H)-one C20H24ClN5O 详情 详情
(XII) 28379 (2R,3R)-2,3-dihydroxybutanedioic acid; L-Tartaric acid; (2R,3R)-2,3-dihydroxysuccinic acid 87-69-4 C4H6O6 详情 详情

合成路线11

该中间体在本合成路线中的序号:(I)

3-Chloroaniline (I) was acylated with chloroacetyl chloride (II) in isopropyl acetate. The resulting chloroacetanilide (III) was condensed with ethanolamine (IV) to yield the (hydroxyethyl)glycinamide (V). Cyclization of (V) to produce the piperazinone (VI) was then effected by treatment with di-tert-butyl azodicarboxylate and tributylphosphine.

1 Williams, T.M. (Merck & Co., Inc.); Biaryl inhibitors of prenyl-protein transferase. WO 0075135 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 25239 3-chloroaniline; 3-chlorophenylamine 108-42-9 C6H6ClN 详情 详情
(II) 11296 2-Chloroacetyl chloride; Chloroacetic chloride 79-04-9 C2H2Cl2O 详情 详情
(III) 47290 2-chloro-N-(3-chlorophenyl)acetamide C8H7Cl2NO 详情 详情
(IV) 10259 Ethanol amine;Ethanolamine;2-Aminoethanol; 2-Amino-1-ethanol;2-Aminoethyl alcohol 141-43-5 C2H7NO 详情 详情
(V) 47291 N-(3-chlorophenyl)-2-[(2-hydroxyethyl)amino]acetamide C10H13ClN2O2 详情 详情
(VI) 47289 1-(3-chlorophenyl)-2-piperazinone C10H11ClN2O 详情 详情
Extended Information