An Improved Palladium-Catalyzed Conversion of Aryl and Vinyl Triflates to Bromides and Chlorides
作者:Jun Pan、Xinyan Wang、Yong Zhang、Stephen L. Buchwald
DOI:10.1021/ol202098h
日期:2011.9.16
A facile Pd-catalyzed conversion of aryl and vinyl triflates to aryl and vinyl halides (bromides and chlorides) is described. This method allows convenient access to a variety of aryl, heteroaryl, and vinyl halides in good to excellent yields and with greatly simplified conditions relative to our previous report.
[EN] TETRAHYDROISOQUINOLYL ACETAMIDE DERIVATIVES FOR USE AS OREXIN RECEPTOR ANTAGONISTS<br/>[FR] DERIVES DE TETRAHYDRO-ISOQUINOLYL-ACETAMIDE DESTINES A SERVIR D'ANTAGONISTES DES RECEPTEURS D'OREXINE
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2004085403A1
公开(公告)日:2004-10-07
The invention relates to novel acetamide derivatives of formula (I) and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of such compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as orexin receptor antagonists.
An increment system for deuterium isotope effects on13C chemical shifts of methylated benzenes
作者:Stefan Berger、Bernd W. K. Diehl
DOI:10.1002/mrc.1260241210
日期:1986.12
The complete series of all possible benzenes bearing one deuterium atom and one to five methyl groups was synthesized. The deuteriumisotopeeffects on the carbon chemicalshifts of the aromatic and aliphatic carbon atoms were measured and shown to obey an empirical increment system. The isotopeeffects over one bond correlate with the C,H spin coupling constants.
ortho‐positions of two aryl rings of triarylboranes decreased the Gibbs free energies of complexation with small Lewis bases by less than 5 kJ mol−1 relative to the classical Lewis acid BAr3, the steric shielding of the CH2 bridge is sufficient to avoid the formation of Lewis adducts with larger Lewis bases such as triarylphosphines. A newly synthesized spirocyclic amino‐borane with a long intramolecular B−N
[EN] METHOD FOR PRODUCING PYRIDAZINONE COMPOUNDS AND INTERMEDIATE THEREOF<br/>[FR] PROCÉDÉ DE PRODUCTION DE COMPOSÉS DE PYRIDAZINONE ET D'UN INTERMÉDIAIRE DE CEUX-CI
申请人:SUMITOMO CHEMICAL CO
公开号:WO2012033225A1
公开(公告)日:2012-03-15
The present invention relates to a novel method for producing a pyridazinone compound and an intermediate thereof as shown in the following scheme: wherein the symbols are as defined in the specification.