carbonyl group, cyano group) in an alkyl halide facilitates its cross-coupling reaction with various diorganozincs in the presence of Ni(acac)(2) (7.5-10 mol % in THF/NMP mixtures). These results were used to develop a new general cross-coupling reaction between functionalized diorganozincs and alkyliodides using m- or p-trifluoromethylstyrene as a reaction promotor and Ni(acac)(2) as a catalyst (7.5-10
A catalytic asymmetric intramolecular homologation of simple ketones with α‐diazoesters was firstly accomplished with a chiral N,N′‐dioxide–Sc(OTf)3 complex. This method provides an efficient access to chiral cyclic α‐aryl/alkyl β‐ketoesters containing an all‐carbon quaternary stereocenter. Under mild conditions, a variety of aryl‐ and alkyl‐substituted ketone groups reacted with α‐diazoester groups
D2 ANTAGONISTS, METHODS OF SYNTHESIS AND METHODS OF USE
申请人:Luehr Gary W.
公开号:US20120010228A1
公开(公告)日:2012-01-12
Provided are D
2
or D
3
antagonist compounds and pharmaceutical compositions of formula I
and pharmaceutically acceptable salts thereof, or isomers thereof, wherein R
1
, R
2
and R
3
are as defined herein. The invention further comprises methods for making the compounds of the invention and methods for the treatment of conditions mediated by the dopamine D
2
or D
3
receptor from the compounds of the invention.
D2 antagonists, methods of synthesis and methods of use
申请人:Luehr Gary W.
公开号:US08691836B2
公开(公告)日:2014-04-08
Provided are D2 or D3 antagonist compounds and pharmaceutical compositions of formula I
and pharmaceutically acceptable salts thereof, or isomers thereof, wherein R1, R2 and R3 are as defined herein. The invention further comprises methods for making the compounds of the invention and methods for the treatment of conditions mediated by the dopamine D2 or D3 receptor from the compounds of the invention.