【结 构 式】 |
【分子编号】11986 【品名】N-[3-[(E)-3-(Dimethylamino)-2-propenoyl]phenyl]-N-ethylacetamide 【CA登记号】 |
【 分 子 式 】C15H20N2O2 【 分 子 量 】260.33608 【元素组成】C 69.2% H 7.74% N 10.76% O 12.29% |
与该中间体有关的原料药合成路线共 4 条
合成路线1
该中间体在本合成路线中的序号:(IV)The condensation of N-(3-acetylphenyl)acetamide (I) with dimethylformamide dimethylacetal (II) at reflux temperature gives N-[3-[3-(dimethylamino)-2-propenoyl]phenyl]acetamide (III), which is alkylated with NaH and ethyl iodide to the corresponding N-ethyl derivative (IV). Finally, this compound is cyclized with 3-aminopyrazole-4-carbonitrile (V) in refluxing acetic acid.
【1】 Mealy, N.; Castaner, J.; Zaleplon. Drugs Fut 1996, 21, 1, 37. |
【2】 Dusza, J.P.; Tomcufcik, A.S.; Albright, J.D. (American Cyanamid Co.); [7-(3-Disubstd. amino)phenyl]pyrazolo[1,5-a]pyrimidines. EP 0208846; JP 1986260083; JP 1995084468; US 4626538 . |
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) | 11983 | 3'-Acetamidoacetophane; m-Acetamidoacetophenone; N-(3-Acetylphenyl)acetamide | 7463-31-2 | C10H11NO2 | 详情 | 详情 |
(II) | 11984 | N-(Dimethoxymethyl)-N,N-dimethylamine;dimethylformamide dimethylacetal;1,1-dimethoxy-N,N-dimethylmethanamine; Dimethoxy-N,N-dimethylmethanamine; N,N-Dimethylformamide dimethyl acetal | 4637-24-5 | C5H13NO2 | 详情 | 详情 |
(III) | 11985 | N-[3-[(E)-3-(Dimethylamino)-2-propenoyl]phenyl]acetamide | C13H16N2O2 | 详情 | 详情 | |
(IV) | 11986 | N-[3-[(E)-3-(Dimethylamino)-2-propenoyl]phenyl]-N-ethylacetamide | C15H20N2O2 | 详情 | 详情 | |
(V) | 11987 | 3-Amino-4-pyrazolecarbonitrile; 3-Amino-1H-pyrazole-4-carbonitrile; 3-Amino-4-cyanopyrazole | 16617-46-2 | C4H4N4 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号:(II)
【1】 Koradi F. Feher F. Magyar E, Singer C. 2005. Preparation of N-[3-(3-cyanopyrazolo [1,5-a] pyrimidin-5-yl) phenyll-N-ethylacetamide, regioisamer of Zaleplon, and crystalline forms of Zaleplon. US 2005032818 |
【2】 Kankan RN, Rao DR. 2005. Zaleplon Synthesis, W0 2005023813 |
【3】 Korycinska M, Stawinski T, Wieczorek M. 2003. A process for the preparation of zaleplon via the cyclocondensation reaction of 3-dimethylamino-l-(3-N-ethyl-N-aoetylaminophenyl) -2-propen-l-one with 3- aminopyrazole-4-carborutrile in an aqueous solution of formic acid. W0 2003095456 |
【4】 Subramanian RS, Sathyanarayanan N, Janardhana PNR, et aL. 2005. Process for prepantion of N-[3-(3- cyanopynzolo [1,5-a] pyrimidin-7-yl) phenyl]-n-ethylacetamide. W0 2005099712 |
合成路线3
该中间体在本合成路线中的序号:(V)
【1】 Shen JS,Li JF,Li FW,et al. 2002.Synthesis of zaleplon.中国医药工业杂卷.33(7): 313~314 |
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) | 49701 | Acetic anhydride; Acetyl oxide | 108-24-7 | C4H6O3 | 详情 | 详情 |
(II) | 66972 | 3-Aminoacetophenone;3-Amino acetophenone;m-Aminoacetophenone;1-(3-Aminophenyl)ethanone | 99-03-6 | C8H9NO | 详情 | 详情 |
(III) | 11983 | 3'-Acetamidoacetophane; m-Acetamidoacetophenone; N-(3-Acetylphenyl)acetamide | 7463-31-2 | C10H11NO2 | 详情 | 详情 |
(IV) | 11985 | N-[3-[(E)-3-(Dimethylamino)-2-propenoyl]phenyl]acetamide | C13H16N2O2 | 详情 | 详情 | |
(V) | 11986 | N-[3-[(E)-3-(Dimethylamino)-2-propenoyl]phenyl]-N-ethylacetamide | C15H20N2O2 | 详情 | 详情 | |
(VI) | 11987 | 3-Amino-4-pyrazolecarbonitrile; 3-Amino-1H-pyrazole-4-carbonitrile; 3-Amino-4-cyanopyrazole | 16617-46-2 | C4H4N4 | 详情 | 详情 |
合成路线4
该中间体在本合成路线中的序号:(VI)
【1】 Zheng LY, Wang SQ, Li BC, et aL. 2001.Improvement on the synthetic technology of zaleplon as a new sedative and hypnoticdrug. 中国药物化学杂志,11 (6):353~355 |
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) | 10317 | Acetophenone | 98-86-2 | C8H8O | 详情 | 详情 |
(II) | 61934 | 1-(3-nitrophenyl)-1-ethanone;3-Nitroacetophenone;m-Nitroacetophenone | 121-89-1 | C8H7NO3 | 详情 | 详情 |
(III) | 66972 | 3-Aminoacetophenone;3-Amino acetophenone;m-Aminoacetophenone;1-(3-Aminophenyl)ethanone | 99-03-6 | C8H9NO | 详情 | 详情 |
(IV) | 11983 | 3'-Acetamidoacetophane; m-Acetamidoacetophenone; N-(3-Acetylphenyl)acetamide | 7463-31-2 | C10H11NO2 | 详情 | 详情 |
(V) | 11985 | N-[3-[(E)-3-(Dimethylamino)-2-propenoyl]phenyl]acetamide | C13H16N2O2 | 详情 | 详情 | |
(VI) | 11986 | N-[3-[(E)-3-(Dimethylamino)-2-propenoyl]phenyl]-N-ethylacetamide | C15H20N2O2 | 详情 | 详情 | |
(VII) | 11987 | 3-Amino-4-pyrazolecarbonitrile; 3-Amino-1H-pyrazole-4-carbonitrile; 3-Amino-4-cyanopyrazole | 16617-46-2 | C4H4N4 | 详情 | 详情 |
Extended Information