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。