< >为什么不用甲基四氢呋喃试试呢?如果需要methf样品,给我发邮件. < >以下是原文献资料: < >methf can be used to produce high yields of benzyl and allyl grignard reagents at low magnesium ratios. thf can only be used to make benzyl and allyl grignard reagents at reasonable yields by using high molar ratios of magnesium to benzyl or allyl halide. for instance, a yield of greater than 90% of benzylmagnesium bromide is made with methf, but mostly bibenzyl is made with thf at a magnesium:benzylbromide ratio of 1.2:1.