The aim of the present invention is to provide a method capable of producing an optically active pyrimidinamide derivative on an industrial scale.
Compound (I) or a salt thereof is subjected to an asymmetric reduction reaction, the obtained compound (II) or a salt thereof is subjected to a deprotection reaction, and the obtained compound (III) or a salt thereof is reacted with compound (VI) or a salt thereof to obtain compound (V) or a salt thereof.
wherein each symbol is as defined in the specification.
RHODIUM CATALYST AND METHOD FOR PRODUCING AMINE COMPOUND
申请人:TAKEDA PHARMACEUTICAL COMPANY LIMITED
公开号:US20150051416A1
公开(公告)日:2015-02-19
[Problem] Provision of a superior rhodium catalyst and a production method of amine compound.
[Solving Means] A rhodium complex coordinated with a compound represented by the formula
The present invention provides a method of efficiently producing an optically active 6-(3-aminopiperidin-1-yl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine derivative.
The optically active piperidine-3-carboxamide or a derivative thereof, which is obtained by subjecting 1,4,5,6-tetrahydropyridine-3-carboxamide or a derivative thereof to an asymmetric reduction in the presence of a catalyst, is used as an intermediate.
On-demand hydrogen production from formic acid by light-active dinuclear iridium catalysts
作者:Yuki Sofue、Kotohiro Nomura、Akiko Inagaki
DOI:10.1039/d0cc00704h
日期:——
Light-active dinuclear iridium complexes catalyze the decomposition of formic acid to generate H2 under ambient temperature and base-free conditions. The catalyst activity is sensitive to light demonstrating the ON/OFF switching ability.
Diphosphine Ligand and Transition Metal Complex Using the Same
申请人:Yamano Mitsuhisa
公开号:US20090270635A1
公开(公告)日:2009-10-29
The present invention provides a novel ligand represented by the following formula and a novel transition metal complex having the ligand, which shows superior enantioselectivity and catalytic efficiency, particularly high catalyst activity, in various asymmetric synthesis reactions.
A transition metal complex having, as a ligand, a compound represented by the formula
wherein R
4
is a hydrogen atom or a C
1-6
alkyl group optionally having substituent(s), and R
5
and R
6
are each a C
1-6
alkyl group optionally having substituent(s), or the formula
is a group represented by the formula
wherein ring B is a 3- to 8-membered ring optionally having substituent(s).