Radical 1,2-Alkylarylation/Acylarylation of Allylic Alcohols with Aldehydes via Neophyl Rearrangement
作者:Changduo Pan、Qingting Ni、Yu Fu、Jin-Tao Yu
DOI:10.1021/acs.joc.7b01255
日期:2017.7.21
A metal-free 1,2-alkylarylation of allylicalcohols with aliphatic aldehydes through concomitant radical neophyl rearrangement was developed, providing 1,2-diphenyl-3-alkyl propanones in moderate to good yields. Moreover, when cyclopropanecarbaldehyde and aryl carbaldehydes were concerned, acylarylation was involved leading to 1,4-dicarbonyl compounds.
Metal-free oxidative C(sp<sup>3</sup>)–H bond functionalization of alkanes and alkylation-initiated radical 1,2-aryl migration in α,α-diaryl allylic alcohols
作者:Jincan Zhao、Hong Fang、Ruichun Song、Jie Zhou、Jianlin Han、Yi Pan
DOI:10.1039/c4cc07654k
日期:——
An oxidativeC(sp(3))-H bondfunctionalization of alkanes and alkylation-initiated radical 1,2-aryl migration in alpha,alpha-diaryl allylic alcohols using di-tert-butyl peroxide (DTBP) as the oxidant was established, which tolerates a wide range of simple alkane substrates and alpha,alpha-diaryl allylic alcohols for direct preparation of alpha-aryl-beta-alkylated carbonyl ketones.
NNN Pincer Ru(II)-Complex-Catalyzed α-Alkylation of Ketones with Alcohols
作者:Xiao-Niu Cao、Xiao-Min Wan、Fa-Liu Yang、Ke Li、Xin-Qi Hao、Tian Shao、Xinju Zhu、Mao-Ping Song
DOI:10.1021/acs.joc.8b00013
日期:2018.4.6
C–C bonds using alcohols as the alkylating agents, generating water as the only byproduct. A broad range of substrates, including (hetero)aryl- or alkyl-ketones and alcohols, were well tolerated under the optimized conditions. Notably, α-substituted methylene ketones were also investigated, which afforded α-branched steric hindrance products. A potential application of α-alkylation of methylene acetone
Immobilizing a homogeneous manganese catalyst into MOF pores for α-alkylation of methylene ketones with alcohols
作者:Gargi Dey、Shadab Saifi、Motahar Sk、A. S. K. Sinha、Debasis Banerjee、Arshad Aijaz
DOI:10.1039/d2dt02629e
日期:——
Herein, for the first time, a metal–organic framework (MOF) is reported as a catalyst for α-alkylation of ketones with alcohols. Using an encapsulation strategy via nano-confinement of a homogeneous Mn–phenanthroline complex into MOF pores, functionalized branched ketones were selectively produced. Mechanistic investigations and deuterium labelling experiments validated the utilization of the borrowing
Organocatalytic C−H Functionalization of Simple Alkanes
作者:Fen Su、Fengfei Lu、Kun Tang、Xiaokang Lv、Zhongfu Luo、Fengrui Che、Hongyan Long、Xingxing Wu、Yonggui Robin Chi
DOI:10.1002/anie.202310072
日期:2023.11.6
functionalization/acylation of strong aliphatic C(sp3)-H bonds is disclosed via an N-heterocyclic carbene (NHC)-catalyzed dehydrogenative coupling of aldehydes with simple alkanes. The inert aliphatic C−H bonds are efficiently cleaved through intermolecular hydrogen atom transfer, providing an alternative organocatalytic approach for alkane C−H functionalization under transition metal- and light free