Metal-Free Oxidative Radical Addition of Carbonyl Compounds to α,α-Diaryl Allylic Alcohols: Synthesis of Highly Functionalized Ketones
作者:Xue-Qiang Chu、Hua Meng、You Zi、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1002/chem.201404463
日期:2014.12.15
A metal‐free directalkylation of simple carbonyl compounds (ketones, esters, and amides) with α,α‐diaryl allylic alcohols is described. The protocol provides facile access to highly functionalized dicarbonyl ketones by a radical addition/1,2‐aryl migration cascade. The regioselectivity of the reaction was precisely controlled by the nature of the carbonyl compound.
One‐Pot Synthesis of Allylic Sulfones, Ketosulfones, and Triflyl Allylic Alcohols from Domino Reactions of Allylic Alcohols with Sulfinic Acid under Metal‐Free Conditions
作者:Xue‐Qiang Chu、Hua Meng、Xiao‐Ping Xu、Shun‐Jun Ji
DOI:10.1002/chem.201500469
日期:2015.8.3
A metal‐free tandem procedure by using a sulfonylation reaction of aryl allylicalcohols followed by an iodobenzenediacetate (PIDA)‐promoted oxidative functionalization has been established. Allylicsulfones, γ‐ketosulfones, and triflylallylicalcohols have been constructed in a single operation. The methodology incorporates the sulfonyl (both aryl and triflyl) functionality with a simple work‐up
Difluoroalkylation/1,2-aryl migration of allylic alcohols under transition metal-free conditions
作者:Danhua Ge、Xin Wang、Xue-Qiang Chu
DOI:10.1016/j.tetlet.2021.153002
日期:2021.4
A facile difluoroalkylation and 1,2-aryl migration reaction commencing from allylic alcohols and simple BrCF2COOEt was developed. This metal-freemethod offers chemists green and efficient access to important difluoro 1,5-dicarbonyl compounds in moderate to good yields with good functional group tolerance. Sodium hydrosulfite was used as a low-toxic, cheap, environmentally friendly, and efficient radical
Radical phosphinylation of α,α-diaryl allylic alcohols with concomitant 1,2-aryl migration
作者:Xue-Qiang Chu、You Zi、Hua Meng、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1039/c4cc02114b
日期:——
A novel radical phosphinylation of alpha,alpha-diaryl allylic alcohols with arylphosphine oxides was described for the direct preparation of alpha-aryl-beta-phosphinylated carbonyl ketones in medium to good yields via 1,2-aryl migration. In this reaction, formation of new C(Ar)-C(sp(3)) and C(sp(3))-P bonds was observed.