Synthesis of 4-(trimethylsilyl)- and 4-(tributylstannyl)-2-azetidinones and some of their applications to β-lactam chemistry
作者:Cristina Nativi、Alfredo Ricci、Maurizio Taddei
DOI:10.1016/0040-4039(90)80147-e
日期:1990.1
products with electrophiles are reported: 4-(tributylstannyl)- 2-azetidinone undergoes the palladium catalyzed coupling with electrophiles allowing an “umpolung” acylation of the position 4 of the β-lactam ring.
The synthesis of 4-(tri-n-alkylstannyl)azetidin-2-ones has been accomplished via a displacement reaction of 4-substituted azetidin-2-ones with tin centred anions. The utility of these intermediates as homoenolates is presented.