叔丁基乙烯基醚 、
(E)-methyl 3-acetylamino-2-formyl-2-propenoate 以
甲苯 为溶剂,
反应 24.0h,
生成 (4R,6S)-4-Acetylamino-6-tert-butoxy-5,6-dihydro-4H-pyran-3-carboxylic acid methyl ester 、 (4R,6S)-4-Acetylamino-6-tert-butoxy-5,6-dihydro-4H-pyran-3-carboxylic acid methyl ester