Sonication allows the efficient preparation of various organozincreagents, which cleanly add in a conjugate fashion to α-enones in the presence of Ni(acac)2.
Alkyl Radical Generation via C–C Bond Cleavage in 2-Substituted Oxazolidines
作者:Adrián Luguera Ruiz、Marta La Mantia、Daniele Merli、Stefano Protti、Maurizio Fagnoni
DOI:10.1021/acscatal.2c03768
日期:2022.10.7
corresponding aldehydes) have been herein employed for the successful release of tertiary, α-oxy, and α-amido radicals under photo-organo redox catalysis. The reaction relies on the unprecedented C–Ccleavage occurring from the radical cation of these heterocyclic derivatives. Such a protocol is applied to the visible-light-driven conjugate radical addition onto Michael acceptors and vinyl (hetero)arenes
迫切需要开发在温和的光催化条件下被激活的不带电自由基前体。2-取代-1,3-恶唑烷(E ox < 1.3 V vs SCE,由相应的醛顺利制备)已被用于在光有机氧化还原下成功释放叔、α-氧基和 α-酰胺自由基催化。该反应依赖于这些杂环衍生物的自由基阳离子发生的前所未有的 C-C 裂解。这种协议适用于在温和的无金属条件下将可见光驱动的共轭自由基加成到迈克尔受体和乙烯基(杂)芳烃上。
Ultrasound in organic synthesis. 7. Preparation of organozinc reagents and their nickel-catalyzed reactions with .alpha.,.beta.-unsaturated carbonyl compounds
作者:Christian Petrier、Jayne De Souza Barbosa、Claude Dupuy、Jean Louis Luche
DOI:10.1021/jo00350a065
日期:1985.12
PETRIER, C.;DE, SOUZA, BARBOSA, J. C.;DUPUY, C.;LUCHE, J. -L., J. ORG. CHEM., 1985, 50, N 26, 5761-5765
作者:PETRIER, C.、DE, SOUZA, BARBOSA, J. C.、DUPUY, C.、LUCHE, J. -L.
DOI:——
日期:——
PETRIER, CH.;LUCHE, J. -L.;DUPUY, C., TETRAHEDRON LETT., 1984, 25, N 32, 3463-3466