One‐Shot Radical Cross Coupling Between Benzyl Alcohols and Alkenyl Halides Using Ni/Ti/Mn System
作者:Takuya Suga、Yuuki Takahashi、Yutaka Ukaji
DOI:10.1002/adsc.202000945
日期:2020.12.22
A “one‐shot” cross coupling between benzyl alcohols and alkenylhalides has been established. A combination of low‐valent Ti‐mediated C−OH homolysis and the prominent chemistry of Ni‐based radical catalysis afforded the desired cross‐coupled product with good efficiency. The reaction proceeded regardless of the electronic property of benzyl alcohols, and Ar−B bond remained intact throughout the reaction
Synthesis of 2-vinylic dihydroindoles and tetrahydroquinolines via Pd-catalyzed cross-coupling of o-alkenyl anilides with vinylic halides and triflates
作者:Richard C. Larock、Hoseok Yang、Paola Pace、Sandro Cacchi、Giancarlo Fabrizi
DOI:10.1016/s0040-4039(98)00154-3
日期:1998.4
The palladium-catalyzed cross-coupling of o-vinylic and o-allylic anilides with vinylichalides and triflates produces 2-vinylic dihydroindoles and tetrahydroquinolines respectively in good to high yields.
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
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.
Treatment of (E)-alk-1-enyldicyclohexylboranes with tributyltin methoxide in the presence of galvinoxyl (1 mol%) at room temperature results in transfer of the alk-1-enyl group from boron to tin to give (E)-alk-1-enyltributylstannanes in a highlystereoselective fashion. Subsequent halodestannylation of (E)-alk-1-enyltributylstannanes is allowed to proceed in a one-pot manner to produce the corresponding