Nitrosylsulfuric acid in the synthesis of 5-chloroisoxazoles from 1,1-dichlorocyclopropanes
摘要:
Nitrosylsulfuric acid is shown to be a usable reagent for the synthesis of 5-chioroisoxazoles from readily available 1,1-dichlorocyclopropanes via nitrosation-heterocyclization reaction. A cytotoxicity of some of the prepared 5-chloroisoxazoles towards MCF7, A549, HEK293T and VA13 cell lines was evaluated.
阿托醛缩醛的酸催化串联反应被建立用于合成三个重要分子,2,2-二取代 indolin-3-ones、萘并呋喃和芪。该合成是使用新的反应级联反应实现的,其中涉及相同的两个初始步骤:(i) S N 2' 取代,其中阿托醛充当亲电子试剂;(ii) 生成的苯乙醛类产物的碳-碳键的氧化裂解。与文献方法相比,本协议不仅避免使用昂贵的贵金属催化剂,而且操作简单。
Reverse regioselective photosensitized nucleophilic addition of arylcyclopropanes
作者:Jin-Yi Wu、Jing-Chen Mai、Pan Kai、Ho Tong-Ing
DOI:10.1016/s0040-4039(97)10708-0
日期:1998.2
Reverse regioselective nucleophilic addition of 1-aryl-2,2-dichlorocyclopropanes (1–7) photosensitized by 1,4-dicyanobenzene (DCB) has been observed to give 1-aryl-1-methoxy-3,3-dichloropropanes (for methanol) as the only regioselective products.