Palladium(II) Catalyzed C–H Functionalization Cascades for the Diastereoselective Synthesis of Polyheterocycles
作者:Michael S. Watt、Kevin I. Booker-Milburn
DOI:10.1021/acs.orglett.6b02947
日期:2016.11.4
C–H activation offers huge potential in the generation of complex structures from simple starting materials. Herein we report the development of a highly diastereoselective palladium(II) catalyzed C–H functionalization cascade to produce novel, unsaturated polyheterocycles from simple diene-tethered heterocyclic starting materials. The reaction is applicable to both indole and pyrrole based substrates
A Palladium(II)-Catalyzed CH Activation Cascade Sequence for Polyheterocycle Formation
作者:Stephen P. Cooper、Kevin I. Booker-Milburn
DOI:10.1002/anie.201501037
日期:2015.5.26
Polyheterocycles are found in many natural products and are useful moieties in functional materials and drug design. As part of a program towards the synthesis of Stemona alkaloids, a novel palladium(II)‐catalyzed CH activation strategy for the construction of such systems has been developed. Starting from simple 1,3‐dienyl‐substituted heterocycles, a large range of polycyclic systems containing pyrrole
A stereo- and regio-specific addition of η3-trimethylsilylallyltitanium compound with aldehydes. A facile and stereocontrolled synthesis of E- and Z-terminal dienes
作者:Fumie Sato、Yoshito Suzuki、Masao Sato
DOI:10.1016/s0040-4039(00)85661-0
日期:1982.1
η3-Trimethylsilyallyltitanium compound, (η5-C5H5)2Ti(η3-1-trimethylsilylallyl), reacts with aldehydes to give (±)-(R,S)-3-trimethylsilyl-4-hydroxy-1-alkenes in excellent yields, which can be deoxysilylated to either E- or Z-1,3-dienes.
η 3 -Trimethylsilyallyltitanium化合物,(η 5 -C 5 H ^ 5)2的Ti(η 3 -1-trimethylsilylallyl),与醛进行反应,得到(±) - (R,S)-3-三甲基甲硅烷基-4-羟基-1- -烯烃具有优异的收率,可以将其脱氧甲硅烷基化为E-或Z-1,3-二烯。