Boron-Catalyzed <i>N</i>-Alkylation of Arylamines and Arylamides with Benzylic Alcohols
作者:Murali Mohan Guru、Pradip Ramdas Thorve、Biplab Maji
DOI:10.1021/acs.joc.9b02816
日期:2020.1.17
A sustainable boron-based catalytic approach for chemoselective N-alkylation of primary and secondary aromatic amines and amides with primary, secondary, and tertiary benzylic alcohols has been presented. The metal-free protocol operates at low catalyst loading, tolerates several functional groups, and generates H2O as the sole byproduct. Preliminary mechanistic studies were performed to demonstrate
Alkylation of Aldehyde (Arenesulfonyl)hydrazones with Trialkylboranes
作者:George W. Kabalka、John T. Maddox、Ekaterini Bogas、Shane W. Kelley
DOI:10.1021/jo962089q
日期:1997.5.1
(Arenesulfonyl)hydrazone derivatives of aryl aldehydes are readily alkylated by trialkylboranes in the presence of base to generate new organoboranes that may be converted to the corresponding substituted alkanes or alcohols depending upon the reaction conditions chosen. Both tosyl- and trisylhydrazone derivatives can be utilized in the reaction, which tolerates a variety of functional groups, making it a versatile alternative to both the Grignard and Suzuki-coupling reactions.
Ligand‐Controlled Site‐ and Enantioselective Carbene Insertion into Carbon‐Silicon Bonds of Benzosilacyclobutanes
作者:Jingfeng Huo、Kangbao Zhong、Yazhen Xue、MyeeMay Lyu、Yifan Ping、Wenbai Ouyang、Zhenxing Liu、Yu Lan、Jianbo Wang
DOI:10.1002/chem.202200191
日期:2022.5.11
We report herein a highly efficient palladium-catalyzed carbene insertion into strained Si-C bonds of benzosilacyclobutanes, which provides an efficient method to access α-chiral silanes. With a sterically hindered ligand, carbene insertion into the C(sp3 )-Si bond of benzosilacyclobutanes occurred in excellent site- and enantioselectivity, while C(sp2 )-Si bond insertion occurred selectively with