Regioselective carbon-carbon bond formation at C2 of 1,3-thiazole by reaction of n-ethoxycarbonylthiazolium chloride with C-nucleophiles
作者:Alessandro Dondoni、Tiziano Dall'Occo、Giancarlo Fantin、Marco Fogagnolo、Alessandro Medici
DOI:10.1016/s0040-4039(01)91094-9
日期:1984.1
N-Ethoxycarbonylthiazolium chloride generated in situ from 1,3-thiazole and ethyl chloroformate, treated with lithium carbanions of esters, Grignard reagents, silyl enol ethers and esters, undergo nucleophilic addition at C2 affording the corresponding 2-substituted N-ethoxycarbonylthiazolines.
由1,3-噻唑和氯甲酸乙酯原位生成的N-乙氧羰基噻唑鎓氯化物经酯,格利雅试剂,甲硅烷基烯醇醚和酯的碳负离子处理后,在C 2进行亲核加成,得到相应的2-取代的N-乙氧羰基噻唑啉。