Thiazole, 2-phenyl or -alkyl substituted one and benzothiazole are efficiently arylated with arylbromides at the 2- and/or 5-position(s) in the presence of Pd(OAc)2 and a bulky phosphine ligand using Cs2CO3 as base. 2-Phenyl-5-thiazolecarboxanilide undergoes successive diarylation at the 4- and 5-positions accompanied by decarbamoylation.
在Pd(OAc)2和庞大的膦配体存在下,使用Cs 2 CO 3将噻唑,2-苯基或-烷基取代的一个和苯并噻唑在2和/或5位上与芳基溴有效地芳基化作为基础。2-苯基-5-噻唑甲酰苯胺在4-和5-位进行连续二芳基化,并伴随去甲氨酰化反应。
17BETA-HYDROXYSTEROID DEHYDROGENASE TYPE 1 INHIBITORS FOR THE TREATMENT OF HORMONE-RELATED DISEASES
申请人:Hartmann Rolf
公开号:US20110046147A1
公开(公告)日:2011-02-24
The invention relates to 17beta-hydroxysteroid dehydrogenase type 1 (17betaHSD1) inhibitors, the preparation thereof and the use thereof for the treatment and prophylaxis of hormone-related, especially estrogen-related or androgen-related, diseases.
Direct Arylation of Simple Azoles Catalyzed by 1,10-Phenanthroline Containing Palladium Complexes: An Investigation of C4 Arylation of Azoles and the Synthesis of Triarylated Azoles by Sequential Arylation
amounts of azoles, selective C5 monoarylation was achieved by using the same catalytic system. Subsequent efforts demonstrated that C5 arylated azoles undergo exclusive C2 arylationusing [Pd(phen)2]PF6 as the catalyst with galvinoxyl as an additive. Finally, unprecedented C4 arylation reactions of 2,5-diaryl-azoles occur by using the new catalytic system to give the corresponding triarylated products in
Catalyst-Controlled Regioselective Suzuki Couplings at Both Positions of Dihaloimidazoles, Dihalooxazoles, and Dihalothiazoles
作者:Neil A. Strotman、Harry R. Chobanian、Jiafang He、Yan Guo、Peter G. Dormer、Christina M. Jones、Janelle E. Steves
DOI:10.1021/jo100148x
日期:2010.3.5
dihaloazoles can be monoarylated at a single C−X bond with high selectivity via Suzukicoupling. By changing the palladium catalyst employed, the selectivity can be switched for some dihaloazoles, allowing for Suzukicoupling at the other, traditionally less reactive C−X bond. These conditions are applicable to coupling of a wide variety of aryl-, heteroaryl-, cyclopropyl-, and vinylboronic acids with