Functionally substituted phenoxyalkyl alkoxysilanes and method for
申请人:M&T Chemicals Inc.
公开号:US04645844A1
公开(公告)日:1987-02-24
Novel and known functionally substituted phenoxyalkyl-, thiophenoxyalkyl- and pyridyloxyalkylsilanes are prepared by reacting substantially equimolar amounts of an alkali- or alkaline earth metal phenoxide, thiophenoxide or pyridyloxide with a haloalkylsilane under anhydrous conditions using a dipolar, aprotic solvent in combination with a liquid hydrocarbon.
Photoredox Generation of Carbon-Centered Radicals Enables the Construction of 1,1-Difluoroalkene Carbonyl Mimics
作者:Simon B. Lang、Rebecca J. Wiles、Christopher B. Kelly、Gary A. Molander
DOI:10.1002/anie.201709487
日期:2017.11.20
facile, scalable route to access functional‐group‐rich gem‐difluoroalkenes. Using visible‐light‐activated catalysts in conjunction with an arsenal of carbon‐radical precursors, an array of trifluoromethyl‐substituted alkenes undergoes radical defluorinative alkylation. Nonstabilized primary, secondary, and tertiary radicals can be used to install functional groups in a convergent manner, which would otherwise