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【结 构 式】 
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【分子编号】47289 【品名】1-(3-chlorophenyl)-2-piperazinone 【CA登记号】 |
【 分 子 式 】C10H11ClN2O 【 分 子 量 】210.66292 【元素组成】C 57.02% H 5.26% Cl 16.83% N 13.3% O 7.59% |
合成路线1
该中间体在本合成路线中的序号：(VIII)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2
该中间体在本合成路线中的序号：(VIII)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3
该中间体在本合成路线中的序号：(VIII)Protection of 4-(hydroxymethyl)imidazole (XII) with chlorotriphenylmethane provided the 1-tritylimidazole (XIII). Acetylation of (XIII) with acetic anhydride in pyridine gave acetate ester (XIV). The imidazole ring of (XIV) was then alkylated with alpha-bromo-p-tolunitrile (XV) to yield the imidazolium salt (XVI), from which the N-trityl group was removed upon heating with MeOH. The resulting acetoxymethyl imidazole (XVII) was then hydrolyzed to alcohol (XVIII) using LiOH, and further Swern oxidation of (XVIII) furnished aldehyde (XIX). Finally, reductive condensation of aldehyde (XIX) with piperazinone (VIII) in the presence of sodium triacetoxyborohydride produced the title compound.
| 【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 |
|---|---|---|---|---|---|---|
| (VIII) | 47289 | 1-(3-chlorophenyl)-2-piperazinone | C10H11ClN2O | 详情 | 详情 | |
| (XII) | 42116 | 1H-imidazol-5-ylmethanol | C4H6N2O | 详情 | 详情 | |
| (XIII) | 38392 | (1-trityl-1H-imidazol-4-yl)methanol | C23H20N2O | 详情 | 详情 | |
| (XIV) | 38391 | (1-trityl-1H-imidazol-4-yl)methyl acetate | C25H22N2O2 | 详情 | 详情 | |
| (XV) | 14200 | 4-(Bromomethyl)benzonitrile; alpha-Bromo-p-tolunitrile | 17201-43-3 | C8H6BrN | 详情 | 详情 |
| (XVI) | 47292 | 4-[(acetoxy)methyl]-3-(4-cyanobenzyl)-1-trityl-1H-imidazol-3-ium bromide | C33H28BrN3O2 | 详情 | 详情 | |
| (XVII) | 38390 | [1-(4-cyanobenzyl)-1H-imidazol-5-yl]methyl acetate | C14H13N3O2 | 详情 | 详情 | |
| (XVIII) | 38389 | 4-[[5-(hydroxymethyl)-1H-imidazol-1-yl]methyl]benzonitrile | C12H11N3O | 详情 | 详情 | |
| (XIX) | 38388 | 4-[(5-formyl-1H-imidazol-1-yl)methyl]benzonitrile | C12H9N3O | 详情 | 详情 |
合成路线4
该中间体在本合成路线中的序号：(VIII)In a further procedure, bromide (XV) was reacted with hexamethylenetetramine in refluxing EtOH followed by acid hydrolysis to produce the benzyl amine (XX). Mercapto imidazole (XXII) was then obtained by condensation of amine (XX) with dihydroxyacetone (XXI) and KSCN. Subsequent oxidative desulfuration gave the hydroxymethyl imidazole (XVIII). This was converted to the corresponding chloride (XXIII) by treatment with either SOCl2 in DMF or the Vilsmeier reagent. Finally, chloride (XXIII) was condensed with piperazinone (VIII) in the presence of diisopropylethylamine.
| 【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 |
|---|---|---|---|---|---|---|
| (VIII) | 47289 | 1-(3-chlorophenyl)-2-piperazinone | C10H11ClN2O | 详情 | 详情 | |
| (XV) | 14200 | 4-(Bromomethyl)benzonitrile; alpha-Bromo-p-tolunitrile | 17201-43-3 | C8H6BrN | 详情 | 详情 |
| (XVIII) | 38389 | 4-[[5-(hydroxymethyl)-1H-imidazol-1-yl]methyl]benzonitrile | C12H11N3O | 详情 | 详情 | |
| (XX) | 47293 | 4-(aminomethyl)benzonitrile | C8H8N2 | 详情 | 详情 | |
| (XXI) | 14575 | Dihydroxyacetone; 1,3-dihydroxyacetone | 96-26-4 | C3H6O3 | 详情 | 详情 |
| (XXII) | 47294 | 4-[[5-(hydroxymethyl)-2-sulfanyl-1H-imidazol-1-yl]methyl]benzonitrile | C12H11N3OS | 详情 | 详情 | |
| (XXIII) | 47295 | 4-[[5-(chloromethyl)-1H-imidazol-1-yl]methyl]benzonitrile | C12H10ClN3 | 详情 | 详情 |
合成路线5
该中间体在本合成路线中的序号：(VI)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 |
合成路线6
该中间体在本合成路线中的序号：(VI)The mercaptoimidazole (IX) was prepared by condensation between 4-bromobenzylamine (VII), 1,3-dihydroxyacetone (VIII) and potassium thiocyanate. Oxidative desulfuration of (IX) with hydrogen peroxide in acidic medium yielded imidazole (X). The biphenyl derivative (XII) was obtained by Suzuki coupling of aryl bromide (X) with 4-(trifluoromethyl)benzeneboronic acid (XI). Subsequent oxidation of the alcohol group of (XII) under Swern conditions gave aldehyde (XIII). Finally, reductive coupling of aldehyde (XIII) with piperazinone (VI) in the presence of sodium triacetoxyborohydride furnished the title compound.
| 【2】 Williams, T.M. (Merck & Co., Inc.); Biaryl inhibitors of prenyl-protein transferase. WO 0075135 . |
| 【1】 Kohl, N.E.; Nguyen, D.N.; Lobell, R.B.; Williams, T.M.; Heimbrook, D.C.; Buser, C.A.; Huber, H.E.; Stump, C.A.; Graham, S.L.; Potent inhibitors of farnesyltransferase and geranylgeranyltransferase. 221st ACS Natl Meet (April 1 2001, San Diego) 2001, Abst MEDI 56. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (VI) | 47289 | 1-(3-chlorophenyl)-2-piperazinone | C10H11ClN2O | 详情 | 详情 | |
| (VII) | 15869 | 4-bromobenzylamine; (4-bromophenyl)methanamine | 26177-44-6 | C7H8BrN | 详情 | 详情 |
| (VIII) | 14575 | Dihydroxyacetone; 1,3-dihydroxyacetone | 96-26-4 | C3H6O3 | 详情 | 详情 |
| (IX) | 48637 | [1-(4-bromobenzyl)-2-sulfanyl-1H-imidazol-5-yl]methanol | C11H11BrN2OS | 详情 | 详情 | |
| (X) | 48638 | [1-(4-bromobenzyl)-1H-imidazol-5-yl]methanol | C11H11BrN2O | 详情 | 详情 | |
| (XI) | 48639 | 4-(Trifluoromethyl)phenylboronic acid | C7H6BF3O2 | 详情 | 详情 | |
| (XII) | 48640 | (1-[[4'-(trifluoromethyl)[1,1'-biphenyl]-4-yl]methyl]-1H-imidazol-5-yl)methanol | C18H15F3N2O | 详情 | 详情 | |
| (XIII) | 48641 | 1-[[4'-(trifluoromethyl)[1,1'-biphenyl]-4-yl]methyl]-1H-imidazole-5-carbaldehyde | C18H13F3N2O | 详情 | 详情 |