Photoredox-catalyzed decarboxylative alkylation/cyclization of alkynylphosphine oxides: a metal- and oxidant-free method for accessing benzo[<i>b</i>]phosphole oxides
By photoredox-catalysis, alkylation/aryl cyclization of alkynylphosphine oxides towards benzo[b]phospholes has been realized under metal- and oxidant-free conditions at room temperature.
Organocatalyzed, Visible-Light Photoredox-Mediated, One-Pot Minisci Reaction Using Carboxylic Acids via <i>N</i>-(Acyloxy)phthalimides
作者:Trevor C. Sherwood、Ning Li、Aliza N. Yazdani、T. G. Murali Dhar
DOI:10.1021/acs.joc.8b00205
日期:2018.3.2
one-pot Minisci reaction has been developed using visible light, an organic photocatalyst, and carboxylic acids as radical precursors via the intermediacy of in situ-generated N-(acyloxy)phthalimides. The conditions employed are mild, demonstrate a high degree of functional group tolerance, and do not require a large excess of the carboxylic acid reactant. As a result, this reaction can be applied to
Zinc-Mediated Decarboxylative Alkylation of <i>Gem</i>-difluoroalkenes
作者:Liting Yu、Mei-Lin Tang、Chang-Mei Si、Zhi Meng、Yongxi Liang、Jilai Han、Xun Sun
DOI:10.1021/acs.orglett.8b01866
日期:2018.8.3
An efficient and mild zinc-mediated decarboxylative alkylation of gem-difluoroalkenes with N-hydroxyphthalimide (NHP) esters, to give monofluoroalkenes in moderate to excellent yields with high Z-selectivity is reported. The reaction tolerates a broad range of functional groups and can be easily scaled up, which thus may pave the way for its further applications in medicinal chemistry and materials
Ketones from Nickel‐Catalyzed Decarboxylative, Non‐Symmetric Cross‐Electrophile Coupling of Carboxylic Acid Esters
作者:Jiang Wang、Brian P. Cary、Peyton D. Beyer、Samuel H. Gellman、Daniel J. Weix
DOI:10.1002/anie.201906000
日期:2019.8.26
Synthesis of the C-C bonds of ketones relies upon one high-availability reagent (carboxylic acids) and one low-availability reagent (organometallic reagents or alkyl iodides). We demonstrate here a ketone synthesis that couples two different carboxylic acidesters, N-hydroxyphthalimide esters and S-2-pyridyl thioesters, to form aryl alkyl and dialkyl ketones in high yields. The keys to this approach
作者:Jiayan He、Guangle Chen、Benxiang Zhang、Yi Li、Jia-Rong Chen、Wen-Jing Xiao、Feng Liu、Chaozhong Li
DOI:10.1016/j.chempr.2020.02.003
日期:2020.5
radical C(sp3)-sulfonylation remains elusive. Herein, we report the decarboxylative radical sulfonylation with sulfinates. With the merger of 4CzIPN (1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene) and Cu(OTf)2 as catalysts, the visible-light-induced reaction of redox-active esters of aliphatic carboxylic acids with organosulfinates at room temperature provides the corresponding decarboxylative