Chiral Brønsted acid catalyzed asymmetric Friedel–Crafts alkylation reaction of indoles with α,β-unsaturated ketones: short access to optically active 2- and 3-substituted indole derivatives
作者:Tsubasa Sakamoto、Junji Itoh、Keiji Mori、Takahiko Akiyama
DOI:10.1039/c0ob00197j
日期:——
The asymmetric Friedel–Crafts alkylation reaction of indoles with α,β-unsaturated ketones catalyzed by chiral phosphoric acid is reported. A wide range of indoles and 4,7-dihydroindoles were allowed to react with α,β-unsaturated ketones to give the corresponding 1,4-adducts in good to high chemical yields and with excellent enantioselectivities.
手性催化的α,β-不饱和酮与吲哚的不对称Friedel-Crafts烷基化反应 磷酸被报道。使各种吲哚和4,7-二氢吲哚与α,β-不饱和酮反应,以良好的化学收率和良好的对映选择性得到相应的1,4-加合物。