Radical translocation reactions of o-iodoanilides: the use of carbon-hydrogen bonds as precursors of radicals adjacent to carbonyl groups
摘要:
The treatment of o-iodoanilides with tributyltin hydride results in radical generation followed by rapid translocation to produce radicals adjacent to carbonyls. These radicals participate in cyclization and asymmetric addition reactions.
“Propylene spaced” allyl tin reagents: A new class of fluorous tin reagents for allylations under radical and metal-catalyzed conditions
作者:Dennis P. Curran、Zhiyong Luo、Peter Degenkolb
DOI:10.1016/s0960-894x(98)00435-1
日期:1998.9
A new generation of propylene-spaced fluorous allyltin reagents [(Rf(CH2)3)3SnCH2CH = CH2] is described. These succeed in radical allylations where their lower homologs (ethylene-spaced) fail, and they provide improved performance in transition metal catalyzed allylations. The reagents and byproducts are readily separated by simple fluorous-organic liquid-liquid or solid-liquid extractions.