Synthesis of 2-Amino-3,4-dihydroquinazolines and Imidazo[2,1-b]quinazoline-2-ones¹
作者:Sanjay Batra、Amita Mishra
DOI:10.1055/s-0029-1217603
日期:2009.9
SN2 reaction of a primary amine on the Baylis-Hillman acetate derived from 2-nitrobenzaldehyde, cyanogen bromide-mediated nitrile addition, and iron-acetic acid promoted reductive cyclization. This approach is also applied to the preparation of imidazo[2,1-b]quinazoline-2-ones and imidazo[2,1-b]quinazolines in one pot. quinazoline - anagrelide - Baylis-Hillman - imidazo[2,1-b]quinazoline - allyl amine
公开了由Baylis-Hillman衍生物合成2-氨基-3,4-二氢喹唑啉的直接方法。该方案涉及伯胺在源自2-硝基苯甲醛的Baylis-Hillman乙酸酯上的顺序S N 2反应,溴化氰介导的腈加成反应以及铁乙酸促进的还原环化反应。该方法也适用于在一锅中制备咪唑并[ 2,1- b ]喹唑啉-2-ones和咪唑并[2,1- b ]喹唑啉。 喹唑啉-Anagrelide-Baylis-Hillman-咪唑并[2,1- b ]喹唑啉-烯丙基胺 CDRI通讯第7780号。