An efficient potassium cyanide-promoted synthesis of 2-arylbenzoxazoles from [4.3.0]boron heterobicycles
摘要:
The 2-arylbenzoxazoles 3a-f were produced in moderate to excellent yields merely by stirring a potassium cyanide (3 equiv)-containing methanol solution of the borobicyclic compounds 1a-f at room temperature. These compounds were fully characterized spectroscopically [1R, H-1, and C-13 NMR and X-ray analysis (3a)] and by elemental analysis. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.
Efficient synthesis of 2-(2′-hydroxyphenyl)benzoxazole by palladium(II)-catalyzed oxidative cyclization
作者:Wei-Hua Chen、Yi Pang
DOI:10.1016/j.tetlet.2009.09.084
日期:2009.12
An efficient method for the synthesis of 2-(2'-hydroxyphenyl)benzoxazole has been developed by using palladium-mediated oxidative cyclization. (C) 2009 Elsevier Ltd. All rights reserved.