<i>N-</i>Pyrrolylketene: A Nonconjugated Heteroarylketene
作者:Mohammad Reza Islami、Annette D. Allen、Sinisa Vukovic、Thomas T. Tidwell
DOI:10.1021/ol102837n
日期:2011.2.4
preferred geometry with the pyrrolyl ring orthogonal to the ketenyl group. Ketene 5 is generated from N-pyrrolylacetic acid (7) with use of Mukaiyama’s reagent, and reacts with imines forming β-lactams 10, with a product ratio correlation of log(cis/trans) with σ+. Photolysis of N-diazoacetylpyrrole (14) in MeOH gives methyl N-pyrrolylacetate (15) from 5 and also ester 17, evidently by trapping of