The zwitterionic species generated by the addition of dimethoxy carbene to dimethyl acetylenedicarboxylate (DMAD) is trapped by aldehydes and quinones to yield dihydrofuran derivatives in good yields.
通过将二甲氧基卡宾添加到
乙炔二
羧酸二甲酯(
DMAD)中而生成的两性离子物质被醛和醌捕获,以高收率生成二氢
呋喃衍
生物。