Azulenesulfonium and azulenebis(sulfonium) salts: Formation by interrupted Pummerer reaction and subsequent derivatisation by nucleophiles

[摘要] Azulenes undergo either single or dual SEAr reactions depending on the nature of the sulfur(IV) electrophile employed. These electrophiles are generated in situ from either sulfoxides or sulfides. The resultant cationic or dicationic azulene products can undergo further derivatisation by means of nucleophilic attack at the sulfonium alpha-carbon. In the case of cycloalkyl azulenylsulfonium salts, this leads to ring-opened azulenylsulfide products. (C) 2020 The Authors. Published by Elsevier Ltd.

[发布日期] 2020-12-04

[关键词] Azulene;Interrupted Pummerer;Sulfonium