Fe-Catalyzed radical-type difunctionalization of styrenes with aliphatic aldehydes and trimethylsilyl azide <i>via</i> a decarbonylative alkylation–azidation cascade
作者:Wei-Yu Li、Qi-Qiang Wang、Luo Yang
DOI:10.1039/c7ob02598j
日期:——
A convenient Fe-catalyzed decarbonylative alkylation–azidation cascade reaction of styrene derivatives with aliphatic aldehydes and TMSN3 to provide aliphatic azides is developed. With DTBP as an oxidant and radical initiator, this reaction smoothly converts aliphatic aldehydes into 1°, 2° and 3° alkyl radicals and subsequently allows for the cascade construction of C(sp3)–C(sp3) and C(sp3)–N bonds
Visible-light-mediated alkylation of 4-alkyl-1,4-dihydropyridines with alkenyl sulfones
作者:Fuyang Yue、Jianyang Dong、Yuxiu Liu、Qingmin Wang
DOI:10.1039/d1ob01806j
日期:——
Herein we report a mild, general protocol for visible-light-mediated alkylation of 4-alkyl-1,4-dihydropyridines with alkenyl sulfones. The protocol permits efficient functionalization of sulfones with a broad range of cyclic and acyclic secondary and tertiary alkyl groups and is scalable to the gram level. Its excellent functional group tolerance and mildness make it suitable for late-stage functionalization
Fe-Catalyzed decarbonylative alkylation–peroxidation of alkenes with aliphatic aldehydes and hydroperoxide under mild conditions
作者:Chuan-Shuo Wu、Rong Li、Qi-Qiang Wang、Luo Yang
DOI:10.1039/c8gc02834f
日期:——
A convenient Fe-catalyzed decarbonylative alkylation–peroxidation of alkenes with aliphaticaldehydes and TBHP to provide chain elongated peroxides is developed, which is further applied to the one-pot synthesis of alkylated ketones. Aliphaticaldehydes were decarbonylated into 1°, 2° and 3° alkyl radicals at low temperature which subsequently allows the cascade construction of C(sp3)–C(sp3) and C(sp3)–O
Dialkylation of 1,3-Dienes by Dual Photoredox and Chromium Catalysis
作者:J. Luca Schwarz、Huan-Ming Huang、Tiffany O. Paulisch、Frank Glorius
DOI:10.1021/acscatal.9b04222
日期:2020.1.17
The direct conversion of feedstock chemicals into value-added products is of broad interest in chemical research. Herein, we present a regioselective and diastereoselective three-component dialkylation of feedstock 1,3-dienes with Hantzsch esters and aldehydes for the synthesis of homoallylic alcohols. The reaction is enabled by dual photoredox and chromium catalysis and can also be performed enantioselectively