Copper-catalyzed tandem reactions of 2-halobenzenamines with isothiocyanates under ligand- and base-free conditions
作者:Yan-Jin Guo、Ri-Yuan Tang、Ping Zhong、Jin-Heng Li
DOI:10.1016/j.tetlet.2009.11.086
日期:2010.1
ligand-free copper-catalyzedreaction of 2-halobenzenamines with isothiocyanates has been developed for the synthesis of 2-aminobenzothiazoles. In the presence of CuBr and TBAB (tetra-n-butyl ammonium bromide, additive), a variety of 2-halobenzenamines underwent the reaction with isothiocyanates at 40 °C, affording 2-aminobenzothiazoles in moderate to excellent yields. It is noteworthy that the reaction is
2-AMINOBENZOTHIAZOLES AS CB1 RECEPTOR INVERSE AGONISTS
申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP1638556A1
公开(公告)日:2006-03-29
US7297707B2
申请人:——
公开号:US7297707B2
公开(公告)日:2007-11-20
[EN] 2-AMINOBENZOTHIAZOLES AS CB1 RECEPTOR INVERSE AGONISTS<br/>[FR] 2-AMINOBENZOTHIAZOLES UTILISES COMME AGONISTES INVERSES DU RECEPTEUR CB1
申请人:HOFFMANN LA ROCHE
公开号:WO2005000301A1
公开(公告)日:2005-01-06
The present invention relates to compounds of formula (I) wherein R1, R2, R3, R3a and R3b are as defined in the description and claims, and pharmaceutically acceptable salts thereof, for use as therapeutically active substances. The compounds are useful for the treatment and/or prophylaxis of diseases which are associated with the modulation of CB1 receptors.