A Ligand-Directed Catalytic Regioselective Hydrocarboxylation of Aryl Olefins with Pd and Formic Acid
作者:Wei Liu、Wenlong Ren、Jingfu Li、Yuan Shi、Wenju Chang、Yian Shi
DOI:10.1021/acs.orglett.7b00507
日期:2017.4.7
An effective Pd-catalyzed hydrocarboxylation of aryl olefins with Ac2O and formic acid is described. A variety of 2- and 3-arylpropanoic acids can be regioselectively formed by the judicious choice of ligand without the use of toxic CO gas.
Asymmetric Synthesis of Arylpropionic Acids and Aryloxy Acids by Using Lactamides as Chiral Auxiliaries
作者:Alessandra Ammazzalorso、Rosa Amoroso、Giancarlo Bettoni、Barbara De Filippis、Marialuigia Fantacuzzi、Letizia Giampietro、Cristina Maccallini、Maria L. Tricca
DOI:10.1002/ejoc.200600484
日期:2006.9
resolution methods have been applied for the asymmetricsynthesis of pharmaceutical arylpropionic acids and aryloxy acids by using amides of (S)-lactic acid as chiralauxiliaries. For arylpropionic acids the esterification mediated by dicyclohexylcarbodiimide (DCC) and 4-(dimethylamino)pyridine (DMAP) proceeds with good asymmetric induction, while for aryloxyacetic acids the key-step is a diastereoselective
Para-aryl or heterocyclic substituted phenyl glucokinase activators
申请人:Hoffmann-La Roche Inc.
公开号:US06384220B2
公开(公告)日:2002-05-07
Para-aryl or heteroaryl substituted phenyl amides which are active as glucokinase activators to increase insulin secretion which makes them useful for treating type II diabetes.
The invention provides compounds, pharmaceutical compositions and methods for the therapeutic treatment and prevention of neurodegenerative disorder and other Aβ
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-related diseases and disorders.
Cu-catalyzed enantioselective decarboxylative cyanation <i>via</i> the synergistic merger of photocatalysis and electrochemistry
作者:Yin Yuan、Junfeng Yang、Junliang Zhang
DOI:10.1039/d2sc05428k
日期:——
The development of an efficient and straightforward method for decarboxylative coupling using common alkyl carboxylic acid is of great value. However, decarboxylative coupling with nucleophiles always needs stoichiometric chemical oxidants or substrate prefunctionalization. Herein, we report a protocol for Cu-catalyzed enantioselectivedecarboxylative cyanation via the merger of photocatalysis and