Iron-Catalyzed Cross-Coupling of Alkenyl Sulfides with Grignard Reagents
作者:Kenichiro Itami、Shohei Higashi、Masahiro Mineno、Jun-ichi Yoshida
DOI:10.1021/ol047504c
日期:2005.3.1
[reaction: see text] The iron-catalyzedcross-coupling reaction of alkenyl sulfides with Grignard reagents is described. While the cross-coupling proceeds efficiently at alkenyl-S bonds, almost no cross-coupling takes place at aryl-S bonds, attesting to a unique selectivity of iron catalysis. The beneficial effect of potentially coordinating 2-pyrimidyl group on sulfur is also described.
Sequential Assembly Strategy for Tetrasubstituted Olefin Synthesis Using Vinyl 2-Pyrimidyl Sulfide as a Platform
作者:Kenichiro Itami、Masahiro Mineno、Nobuhiro Muraoka、Jun-ichi Yoshida
DOI:10.1021/ja045858t
日期:2004.9.1
We have developed a programmable and diversity-oriented synthetic scheme for tetrasubstituted olefins through a site-selective and sequential assembly of pi-components onto a C=C core of vinyl 2-pyrimidyl sulfide. Noteworthy features are that (i) all components assembled stem from readily available organic halides or their Grignard reagents, (ii) the installation at the desired position can be achieved by the addition of the components in the appropriate order, and (iii) simple alteration of addition order in the sequence results in the production of all possible regio- and stereoisomers of multisubstituted olefins.
Rapid Synthesis of CDP840 with 2-Pyrimidyl Vinyl Sulfide as a Platform
作者:Nobuhiro Muraoka、Masahiro Mineno、Kenichiro Itami、Jun-ichi Yoshida
DOI:10.1021/jo0510437
日期:2005.8.1
A rapid synthesis of CDP840 (a potential therapeutic agent for asthma), using 2-pyrimidyl vinyl sulfide as a platform, has been established. This method includes a stereoselective double Mizoroki-Heck-type arylation, a Liebeskind-Srogl-type cross-coupling reaction, and a Pd/C-catalyzed hydrogenation.
SKVORTSOVA, G. G.;STEPANOVA, Z. V.;ANDRIYANKOVA, L. V.;VORONOV, V. K., ZH. OBSHCH. XIMII, 1982, 52, N 7, 1625-1631
作者:SKVORTSOVA, G. G.、STEPANOVA, Z. V.、ANDRIYANKOVA, L. V.、VORONOV, V. K.