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【结 构 式】

【分子编号】21722

【品名】benzyl 2,3-dihydro-1H-inden-2-ylmethylcarbamate

【CA登记号】

【 分 子 式 】C18H19NO2

【 分 子 量 】281.3544

【元素组成】C 76.84% H 6.81% N 4.98% O 11.37%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(II)

Curtius rearrangement of indanylacetic acid (I) using diphenylphosphoryl azide (DPPA) in the presence of benzyl alcohol afforded benzyl carbamate (II). Hydrogenolytic deprotection of (II) in the presence of palladium catalyst then provided amine (III), which was condensed with 4-chlorobenzenesulfonyl chloride (IV) to give sulfonamide (V). Subsequent Friedel Crafts reaction of (V) with ethyl a-chloro-a-(methylsulfanyl)acetate (VI) and SnCl4 furnished sulfide (VII), from which the methylthio group was removed by reductive treatment with Zn dust in AcOH yielding (VIII). Finally, alkaline hydrolysis of the indanylacetic ester (VIII) provided the title carboxylic acid, isolated as the corresponding sodium salt.

1 Iwakuma, T.; Kurimoto, T.; Yoshida, K.; Shinozaki, K.; Sato, R.; Sato, H.; Synthesis and thromboxane A2 antagonistic activity of indane derivatives. Bioorg Med Chem Lett 1999, 9, 3, 401.
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) 21721 2-(2,3-dihydro-1H-inden-2-yl)acetic acid 37868-26-1 C11H12O2 详情 详情
(II) 21722 benzyl 2,3-dihydro-1H-inden-2-ylmethylcarbamate C18H19NO2 详情 详情
(III) 21723 2,3-dihydro-1H-inden-2-ylmethylamine; 2,3-dihydro-1H-inden-2-ylmethanamine C10H13N 详情 详情
(IV) 15787 4-chlorobenzenesulfonyl chloride;4-chlorobenzene-1-sulfonyl chloride 98-60-2 C6H4Cl2O2S 详情 详情
(V) 21725 4-chloro-N-(2,3-dihydro-1H-inden-2-ylmethyl)benzenesulfonamide C16H16ClNO2S 详情 详情
(VI) 21726 ethyl 2-chloro-2-(methylsulfanyl)acetate C5H9ClO2S 详情 详情
(VII) 21727 ethyl 2-[2-([[(4-chlorophenyl)sulfonyl]amino]methyl)-2,3-dihydro-1H-inden-5-yl]-2-(methylsulfanyl)acetate C21H24ClNO4S2 详情 详情
(VIII) 21728 ethyl 2-[2-([[(4-chlorophenyl)sulfonyl]amino]methyl)-2,3-dihydro-1H-inden-5-yl]acetate C20H22ClNO4S 详情 详情
Extended Information