作者:M. Trolliet、R. Longeray、J. Dreux
DOI:10.1016/s0040-4020(01)97231-x
日期:1974.1
To check if only 4-substituted 2-pyrones lead to 2H-pyrans with Grignard reagents, the reactions of 4-unsubstituted 2-pyrones with methylmagnesium iodide have been studied. From 3, 5, 6 trisubstituted 2-pyrones, 2H-pyrans may be obtained; but 5,6-disubstituted 2-pyrones give only linear products.
为了用格氏试剂检查仅4-取代的2-吡喃酮是否导致2 H-吡喃,已经研究了4-未取代的2-吡喃酮与甲基碘化镁的反应。由3、5、6个三取代的2-吡喃酮可得到2个H-吡喃; 但是5,6-二取代的2-吡喃酮只能产生线性产物。