The reaction of benzotropenium ion, 1,2-benzocycloheptatriene-7-methyl ether and 3,4-benzocycloheptatriene-7-methyl ether with methyl and 2-propyl grignard reagents
作者:D.J. Bertelli、W.J. Rossiter
DOI:10.1016/0040-4020(68)88011-1
日期:——
2-benzocycloheptatriene-7-methyl ether. This sole product results from an equilibrium and not a kinetic controlled process. The reaction of benzotropenium ion with MeMgI leads to approximately an equal mixture of 7-methyl-1,2-and 7-methyl-3,4-benzocycloheptatriene. Essentially the same product ratio is derived from the reaction of 3,4-benzocycloheptatriene-7-methyl ether with MeMgI, while 1,2-benzocy