METHOD FOR PRODUCTION OF HYDROXYCARBOXYLIC ACID AMIDE COMPOUNDS AND NOVEL ARYLBORONIC ACID COMPOUND
申请人:NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
公开号:US20150011766A1
公开(公告)日:2015-01-08
A method for production of hydroxycarboxylic acid amide compounds, including performing amide condensation between an α- or β-hydroxycarboxylic acid compound and an amine compound in the presence as a catalyst of an alkylboronic acid represented by R
3
B(OH)
2
(wherein R
3
is a primary alkyl group) or an arylboronic acid compound to produce a hydroxycarboxylic acid amide compound, the arylboronic acid compound being represented by Formula (1):
(in Formula (1), —(CH
2
)
n
NR
1
R
2
is bonded at an ortho position or a para position, n is 1 or 2, R
1
is a tertiary alkyl group, R
2
is a secondary or tertiary alkyl group, and —NR
1
R
2
may be a ring).
US3975357A
申请人:——
公开号:US3975357A
公开(公告)日:1976-08-17
US9162972B2
申请人:——
公开号:US9162972B2
公开(公告)日:2015-10-20
Metal‐Free C−H Borylation of N‐Heteroarenes by Boron Trifluoride
Organoboron compounds are essential reagents in modern C−C coupling reactions. Their synthesis via catalytic C−H borylation by main group elements is emerging as a powerful tool alternative to transition metal based catalysis. Herein, a straightforward metal‐free synthesis of aryldifluoroboranes from BF3 and heteroarenes is reported. The reaction is assisted by sterically hindered amines and catalytic