Controlled Oxidation of Pyrroles: Synthesis of Highly Functionalized γ-Lactams
摘要:
The oxidation of pyrroles usually leads to uncontrolled polymerization and decomposition. To overcome this problem, the controlled oxidation of substituted pyrroles with Dess-Martin periodinane is reported. This strategy yields a range of 5-aroyloxypyrrolinones.
Mild Friedel–Crafts Reactions inside a Hexameric Resorcinarene Capsule: C−Cl Bond Activation through Hydrogen Bonding to Bridging Water Molecules
作者:Pellegrino La Manna、Carmen Talotta、Giuseppe Floresta、Margherita De Rosa、Annunziata Soriente、Antonio Rescifina、Carmine Gaeta、Placido Neri
DOI:10.1002/anie.201801642
日期:2018.5.4
Calculations showed that there are catalytically relevant hydrogen‐bonding interactions between the bridging water molecules of the capsule and benzyl chloride, which is fundamental for the activation of the C−Cl bond. The capsule controls the reaction outcome. Inside the inner cavity of the capsule, N‐methylpyrrole is preferentially benzylated in the unusual β‐position while mesitylene reacts faster than 1