申请人:Merck Patent Gesellschaft mit beschrankter Haftung
公开号:US04070461A1
公开(公告)日:1978-01-24
Biphenylyl ethers of the formula ##STR1## and their physiologically acceptable acid addition salts exhibit pharmaceutically useful serum cholesterol and triglyceride lowering, fibrinolytic, thrombocyte aggregation inhibition, .beta.-receptor blocking and neuroleptic effects.
Mechanism of the von Braun amide degradations with carbonyl bromide or phosphorus pentabromide
作者:B.A. Phillips、G. Fodor、J. Gal、F. Letourneau、J.J. Ryan
DOI:10.1016/s0040-4020(01)93483-0
日期:1973.1
isolation of crystalline n-alkylene-α-bromoiminium bromides, and their smooth thermal decomposition, which makes the von Pechmann-von Braun type of degradation competitive to the Hofmann methylation; (2) new procedure was found for preparing ammonium tribromides and iododibromides using carbonyl bromide; (3) a number of the heterofore unknown imidoyl bromides have been prepared and characterized, and their
Borane-Catalyzed Synthesis of Quinolines Bearing Tetrasubstituted Stereocenters by Hydride Abstraction-Induced Electrocyclization
作者:Alexander F. G. Maier、Sebastian Tussing、Hui Zhu、Garrit Wicker、Pavleta Tzvetkova、Ulrich Flörke、Constantin G. Daniliuc、Stefan Grimme、Jan Paradies
DOI:10.1002/chem.201804777
日期:2018.11.2
stereocenters from vinyl anilines has been developed. Mechanistic studies and quantum‐mechanical investigations support the hydride abstraction/electrocyclization/hydride addition mechanism. The products were obtained in up to 99 % yield with a diastereoselectivity of >99 % in favour for the 3a‐5‐cis isomer.