Vasicine from Adhatoda vasica as an organocatalyst for metal-free Henry reaction and reductive heterocyclization of o-nitroacylbenzenes
作者:Sushila Sharma、Manoranjan Kumar、Vinod Bhatt、Onkar S. Nayal、Maheshwar S. Thakur、Neeraj Kumar、Bikram Singh、Upendra Sharma
DOI:10.1016/j.tetlet.2016.09.095
日期:2016.11
Vasicine, a quinazoline alkaloid, from the leaves of Adhatoda vasica, has been utilized as an efficient catalyst for metal and base free Henry reaction of various aldehydes with nitro alkanes. The method can be used in the synthesis of various β-nitro alcohols under mild reaction conditions without use of hazardous organic solvents and expensive catalysts. Vasicine is also applied successfully for
Vasicine是一种来自Adhatoda vasica叶片的喹唑啉生物碱,已被用作各种醛与硝基烷烃的无金属和无碱亨利反应的有效催化剂。该方法可用于在温和的反应条件下合成各种β-硝基醇,而无需使用危险的有机溶剂和昂贵的催化剂。瓦西辛还成功地用于在温和条件下以高收率从邻硝基硝基苯一锅合成2,1-苯并恶唑。