The enolsilyl ether 2, generated from butynone adduct 3, which is easily available from the enantiomerically pure cyclopentadiene 1, proved to be a general building block for polycyclic anellation products to cyclohexenone. After proper adjustment of functional groups in the cycloadducts by means of high pressure Diels-Alder cycloadditions, the thermal retro-process provided routes to various enantiopure alicyclic and. heterocyclic target compounds in high yields.
Synthesis and Reactions of .alpha.-(Trifluoromethanesulfonyloxy) Enecarbamates Prepared from N-Acyllactams
作者:Christopher J. Foti、Daniel L. Comins
DOI:10.1021/jo00114a006
日期:1995.5
Synthesis of N-heterocycles via lactam-derived ketene aminal phosphates. Asymmetric synthesis of cyclic amino acids.
作者:K. C. Nicolaou、Kenji Namoto
DOI:10.1039/a804198i
日期:——
A variety of N-heterocycles can be synthesized from lactams via Pd0-catalyzed couplings of their corresponding enol phosphates.