Application of DMF–methyl sulfate adduct in the regioselective synthesis of 3-acylated indolizines
作者:Teresa Przewloka、Shoujun Chen、Zhiqiang Xia、Hao Li、Shijie Zhang、Dinesh Chimmanamada、Elena Kostik、David James、Keizo Koya、Lijun Sun
DOI:10.1016/j.tetlet.2007.06.095
日期:2007.8
A number of 3-acylated indolizines were synthesized in good to excellent yields by a newly established reaction between picolinium salts and the methylsulfate salt of A (R = Me), the adduct formed from DMF-Me2SO4 as the key reagent. The low cost, short reaction time, mild reaction condition, and easy purification of the products make this an attractive new method for the synthesis of indolizine compounds. A variety of functional groups (nitro, cyano, ester, methoxy, and halogens) were well tolerated under the reaction conditions. (c) 2007 Elsevier Ltd. All rights reserved.