Chemoselective Reaction of Benzoylisothiocyanates with Hydroxyl Group of Salicylamide: a New and Convenient Entry Into 2-Aryl-4<i>H</i>-benzo[e][1,3]oxazin-4-ones
作者:Tarjeet Singh、Girija S. Singh、Ram Lakhan
DOI:10.1080/10426507.2012.755974
日期:2013.10.1
Abstract The reactions of benzoylisothiocyanates with salicylamide in pyridine-xylene solution occurs chemoselectively at the hydroxyl group of the salicylamide to afford the corresponding O-benzoyl derivatives. The latter products, on prolonged heating in pyridine-xylene solution, undergo cyclodehydration to give 2-aryl-4H-benzo[e][1,3]oxazin-4-ones in good yields. These compounds could also be synthesized
HETEROCYCLISCHE VERBINDUNGEN ALS BLEICHAKTIVATOREN ODER OPTISCHE AUFHELLER IN WASCHMITTELN
申请人:BASF Aktiengesellschaft
公开号:EP0502013A1
公开(公告)日:1992-09-09
EP1558260A4
申请人:——
公开号:EP1558260A4
公开(公告)日:2006-10-25
QUINAZOLINONE COMPOUNDS AS CALCILYTICS
申请人:NPS PHARMACEUTICALS, INC.
公开号:EP1558260A2
公开(公告)日:2005-08-03
[EN] QUINAZOLINONE COMPOUNDS AS CALCILYTICS<br/>[FR] COMPOSES DE QUINAZOLINONE UTILISES COMME CALCILYTIQUES
申请人:NPS PHARMA INC
公开号:WO2004041755A2
公开(公告)日:2004-05-21
Various calcilytic compounds and pharmaceutical compositions containing these compounds are disclosed. Calcilytic compounds are compounds capable of inhibiting calcium receptor activity. Techniques which can be used to obtain calcilytic compounds and uses of calcilyitc compounds as calcium receptor antagonists are also disclosed.