Annulation of Ethyl (Bis(ethylthio)methyl)benzoate and Ethyl 2-(1,3)Dithiolan-2-yl-benzoate with .ALPHA.,.BETA.-Unsaturated Carbonyl Compounds:A New Synthesis of Naphthalene and Anthracene Derivatives.
作者:Yutaka OZAKI、Kazuhiro IMAIZUMI、Kyouko OKAMURA、Masahiro MOROZUMI、Ayako HOSOYA、Sang-Won KIM
DOI:10.1248/cpb.44.1785
日期:——
Several kinds of fused cyclic compounds were obtained by tandem Michael-Claisen condensation of ethyl 2-[bis(ethylthio)methyl]benzoate and ethyl 2-[1, 3]dithiolan-2-yl-benzoate with α, β-unsaturated carbonyl compounds. Treatment of the annulated products with mercury(II)perchlorate trihydrate or N-chlorosuccinimide gave naphthoquinones, naphthalenes, and anthracenes.
通过 2-[双(乙硫基)甲基]苯甲酸乙酯和 2-[1,3]二硫环戊-2-基苯甲酸乙酯与 α, β-不饱和羰基化合物的串联迈克尔-克莱森缩合反应,获得了多种融合环状化合物。用三水合高氯酸汞(II)或 N-氯丁二酰亚胺处理环化产物,可得到萘醌、萘和蒽。