Palladium-Catalyzed Highly Regio- and Enantioselective Hydroesterification of Aryl Olefins with Phenyl Formate
作者:Jingfu Li、Wenju Chang、Wenlong Ren、Jie Dai、Yian Shi
DOI:10.1021/acs.orglett.6b02467
日期:2016.11.4
An effective Pd-catalyzed regio- and enantioselective hydroesterification of aryl olefins with phenyl formate is described. A variety of phenyl 2-arylpropanoates can be obtained in good yields with high b/l ratios and ee’s without using toxic CO gas.
Olefin Hydroarylation Catalyzed by a Single-Component Cobalt(-I) Complex
作者:Benjamin A. Suslick、T. Don Tilley
DOI:10.1021/acs.orglett.1c00258
日期:2021.2.19
has been developed for olefinhydroarylations with (N-aryl)aryl imine substrates. More than 40 examples were examined under mild reaction conditions to afford the desired alkyl-arene product in good to excellent yields. Catalysis occurs in a regioselective manner to afford exclusively branched products with styrene-derived substrates or linear products for aliphatic olefins. Electron-withdrawing functional
Direct Synthesis of Polysubstituted Aldehydes via Visible-Light Catalysis
作者:Fengjin Wu、Leifeng Wang、Jiean Chen、David A. Nicewicz、Yong Huang
DOI:10.1002/anie.201712384
日期:2018.2.19
competing reaction pathways, commercial styrenes react with vinyl ethers selectively in the presence of an acridinium salt photooxidant and a disulfide hydrogen‐atom‐transfer catalyst under blue LED irradiation. Alkyl aldehydes with different substitution patterns are prepared in good yields. This strategy can be applied to structurally sophisticated substrates.
Preparation of Vinyl Silyl Ethers and Disiloxanes via the Silyl-Heck Reaction of Silyl Ditriflates
作者:Sara E. S. Martin、Donald A. Watson
DOI:10.1021/ja407748z
日期:2013.9.11
Vinyl silyl ethers and disiloxanes can now be prepared from aryl-substituted alkenes and related substrates using a silyl-Heck reaction. The reaction employs a commercially available catalyst system and mild conditions. This work represents a highly practical means of accessing diverse classes of vinyl silyl ether substrates in an efficient and direct manner with complete regiomeric and geometric selectivity
A Rh(III)-catalyzedregioselective C-H alkenylation and alkynylation of indolines is described. This protocol relies on the use of a removable pyridinyl directinggroup to access valuable C-7 functionalized indoline scaffolds with ample substrate scope and broad functional group tolerance.