叔丁基乙烯基醚 、
(E)-phenyl-2-dimethylphosphono-3-acetic acid acid ethyl ester 反应 24.0h,
生成 trans-2-tert-Butoxy-5-(dimethoxyphosphoryl)-3,4-dihydro-6-methyl-4-phenyl-2H-pyran 、 cis-2-tert-Butoxy-5-(dimethoxyphosphoryl)-3,4-dihydro-6-methyl-4-phenyl-2H-pyran