作者:Masahiko Isaka、Satoshi Ejiri、Eiichi Nakamura
DOI:10.1016/s0040-4020(01)88873-6
日期:——
Metalated cyclopropenone acetals 5 react with a variety of electrophiles, including alkyl halides, carbonyl compounds, vinyl iodides, vinyl triflates, and aryl iodides, to give substituted cyclopropenone acetals in high yield. Hydrolysis of the acetal under acidic conditions gives the corresponding cyclopropenone. The reaction sequence has realized an efficient synthesis of an antibiotic penitricin
金属化的环丙烯酮乙缩醛5与各种亲电子试剂反应,包括烷基卤,羰基化合物,乙烯基碘,乙烯基三氟甲磺酸酯和芳基碘,以高收率得到取代的环丙烯酮乙缩醛。缩醛在酸性条件下的水解得到相应的环丙烯酮。该反应序列已经实现了抗生素青霉素(1)的有效合成。