Hydroxylamine-alkyne cyclisations. Synthesis of the seven-membered lactam structure proposed for (±)-acacialactam
作者:Martin E. Fox、Andrew B. Holmes、Ian T. Forbes、Mervyn Thompson、Joseph W. Ziller
DOI:10.1016/s0040-4039(00)60206-x
日期:1992.11
The cyclic nitrone 2 was converted via the key intermediates 7, 12 and 14 into the seven-membered lactam structure 3 proposed for acacialactam. The spectra of the synthetic material differed from that of the product for which an alternative structure 15 is tentatively proposed.