Efficient Syntheses of Imidazolo[1,2-<i>a</i>]pyridines and -[2,1-<i>a</i>]isoquinolines
作者:Alan R. Katritzky、Guofang Qiu、Qiu-He Long、Hai-Ying He、Peter J. Steel
DOI:10.1021/jo0012602
日期:2000.12.1
and 1-amino-2-(alpha-benzotriazol-1-ylmethyl)isoquinolinium++ + chloride 12, respectively. Compounds 2a-c and 12 react with aryl aldehydes 3a-h to afford imidazolo[1,2-a]pyridines 7a-k and imidazolo[2, 1-a]isoquinolines 13a,b in good yields.
2-氨基吡啶1a-c和1-氨基异喹啉与1-氯甲基苯并三唑生成2-氨基-1- [α-苯并三唑-1-基甲基]吡啶鎓氯化物2a-c和1-氨基-2-(α-苯并三唑-1-基甲基)异喹啉鎓++ +氯化物12。化合物2a-c和12与芳基醛3a-h反应以高收率得到咪唑并[1,2-a]吡啶7a-k和咪唑并[2,1-a]异喹啉13a,b。