A Stereoselective Synthesis Of Methyl Trans- 3 - (2, 2 -Dichloroethenyl)- 2, 2 - Dimethylcyclopropanecarboxylate
作者:Jun'an Ma、Runqiu Huang、Junran Cheng、Ruilian Shao、Zaiguo Li
DOI:10.1080/00397919908086150
日期:1999.5
method is described for the stereoselective synthesis of methyl trans - 3 - (2, 2 -dichloroethenyl) - 2, 2 - dimethylcyclopropanecarboxylate (5) via methyl 3, 3 - dimethyl - 4, 6, 6, 6 -tetrachlorohexanoate (4) as a key intermediate, which was obtained by addition of carbon tetrachloride to methyl 3,3-dimethyl-4-pentenoate (3). Treatment of (4) with sodium methoxide in a single-vessel via methyl 4,6,6-trichloro-3
摘要 描述了一种通过 3, 3 - 二甲基 - 4, 6, 6, 6 - 四氯己酸甲酯立体选择性合成反式 - 3 - (2, 2 - 二氯乙烯) - 2, 2 - 二甲基环丙烷羧酸酯 (5) 的简便方法( 4) 作为关键中间体,由四氯化碳与 3,3-二甲基-4-戊烯酸甲酯 (3) 加成得到。在单容器中通过 4,6,6-三氯-3.3-氯甲基-5-己烯酸甲酯 (6) 用甲醇钠处理 (4) 以优异的产率得到富含反式的 (5)。