Iron-Promoted Difunctionalization of Alkenes by Phenylselenylation/1,2-Aryl Migration
作者:Ping Wu、Kaikai Wu、Liandi Wang、Zhengkun Yu
DOI:10.1021/acs.orglett.7b02751
日期:2017.10.6
Iron-promoted difunctionalization of α,α-diaryl and α-aryl-α-alkyl allylic alcohols has been efficiently achieved by means of N-(phenylseleno)phthalimide (N-PSP) under mild conditions. An in situ generated phenylselenium cation (PhSe+) was added to the olefinic C═C bond to initiate the regioselective phenylselenylation with concomitant 1,2-aryl migration, following a migration preference contrary to
Formal [3 + 2] Reaction of α,α-Diaryl Allylic Alcohols with <i>sec</i>-Alcohols: Proceeding with Sequential Radical Addition/Migration toward 2,3-Dihydrofurans Bearing Quaternary Carbon Centers
作者:Weiming Hu、Song Sun、Jiang Cheng
DOI:10.1021/acs.joc.6b00643
日期:2016.5.20
3-dihydrofurans in moderate to excellent yields with good functional group tolerance. This procedure involves sequential radical addition, 1,2-arylmigration, and a dehydration process, where the migration of aryl with lower electron density is favored. Notably, cyclic reactions with sec-alcohols also ran smoothly, providing a novel method to access oxaspiro compounds.
作者:Chunhai Wang、Xiaoling Huang、Xueting Liu、Suqian Gao、Bin Zhao、Shangdong Yang
DOI:10.1016/j.cclet.2019.08.011
日期:2020.3
the unique biological activities, and they have some attractive prospects as clinical drug moleculars. Herein, a new approach for the synthesis of γ-oxo-phosphonates (the precursor of hydroxyphosphoric acid) has been established through the semipinacolrearrangement tactic involved the photo-induced phosphorus radical process. Most important, this transformation is avoid of the external oxidants, and
One-step base promoted strategy for cyanation of α,α-diaryl alcohols has been developed under mild and transition metal-free conditions. This method provides a straightforward and facile way towards the synthesis of β,γ-unsaturated nitriles and α-phenylnitiriles from α-vinyl carbinols and α,α-diaryl methanols, respectively, up to 99% yield. Moreover, various azides and ethers could also be accessed
Oxidative alkylation of alkenes with carbonyl compounds through concomitant 1,2-aryl migration by photoredox catalysis
作者:Zhaowei Lin、Maojian Lu、Boyi Liu、Jing Gao、Mingqiang Huang、Zhenhong Gan、Shunyou Cai
DOI:10.1039/d0nj03733h
日期:——
Visible-light-enabled oxidative radical 1,2-alkylarylation of α-aryl allylic alcohols with carbonylcompounds has been established under mild conditions. An efficient and convenient protocol for the construction of a variety of 1,5-dicarbonyl compounds was realized in the presence of organic fluorophore 4CzIPN, hypervalent iodine(III) reagent, and visible light irradiation. An obvious kinetic isotope