Synthesis of unexpected nitrogen heterocycles via Pd-catalyzed cross-coupling of o-isopropenyl and methallyl anilides with vinylic halides
作者:Richard C Larock、Paola Pace、Hoseok Yang
DOI:10.1016/s0040-4039(98)00383-9
日期:1998.4
The palladium-catalyzed cross-coupling of o-isopropenyl and o-methallyl-N-tosylanilides with vinylichalides affords good yields of unexpected substituted dihydroquinolines and dihydroindoles respectively, apparently via vinylpalladium addition to the olefin and an unusual rearrangement to a π-allylpalladium intermediate.
Synthesis of nitrogen heterocycles via Pd-catalyzed cross-coupling of o-alkenyl anilides with vinylic halides and triflates
作者:Richard C. Larock、Paola Pace、Hoseok Yang、Charles E. Russell、Sandro Cacchi、Giancarlo Fabrizi
DOI:10.1016/s0040-4020(98)00589-4
日期:1998.8
The palladium-catalyzed cross-coupling of o-allylic and o-vinylic anilides with vinylic halides and triflates produces substituted nitrogen heterocycles in good to high yields by a process involving vinylpalladium addition to the olefin, rearrangement to a π-allylpalladium intermediate and subsequent intramolecular nucleophilic displacement of palladium. Different reactivity and regioselectivity in the