Synthesis of highly substituted indene derivatives by Brønsted acid catalyzed Friedel–Crafts reaction of homoallylic alcohols
作者:Xiaoxiang Zhang、Wan Teng Teo、Weidong Rao、Dik-Lung Ma、Chung-Hang Leung、Philip Wai Hong Chan
DOI:10.1016/j.tetlet.2014.05.027
日期:2014.7
An efficient synthetic method to prepare highly substituted indenes in moderate to excellent yields that relies on Brønsted acid catalyzed Friedel–Crafts reaction of homoallylic alcohols under mild conditions is described.
Silver-Catalyzed Allylation of Ketones and Intramolecular Cyclization through Carbene Intermediates from Cyclopropenes Under Ambient Conditions
作者:Takeo Nakano、Kohei Endo、Yutaka Ukaji
DOI:10.1002/asia.201501196
日期:2016.3.4
Tandem C−C bond formation was achieved through silver‐catalyzed ring‐opening of cyclopropenesvia carbene intermediates. The reaction of cyclopropenes in the presence of a silver catalyst gave indene derivatives under ambient conditions. In contrast, the insertion of organozinc reagents to silver carbene or allylic cation intermediates afforded allylmetal intermediates for the tandem allylation of