Formation amd reactions of 2,3-dimethylene-2,3-dihydrothiophene
作者:Albert M. van Leusen、Keimpe J. van den Berg
DOI:10.1016/0040-4039(88)85261-4
日期:——
2,3-Dimethylene-2,3-dihydrothiophene (the analogue of o-xylylene) is generated in situ from 3-(trimethylanunoniuinmethyl)-2-(trimethylsilylmethyl) thiophene iodide (7) by a fluoride induced 1,4-elimination process, and is identified by several [4+2] cycloadducts obtained in high yields.