Heterocyclic Syntheses on the Basis of Arylation Products of Unsaturated Compounds: X. 3-Aryl-2-chloropropanals as Reagents for the Synthesis of 2-Amino-1,3-thiazole Derivatives
摘要:
Meerwein reaction of arenediazonium chlorides with acrolein gave 3-aryl-2-chloropropanals which were brought into cyclocondensation with thiourea. The resulting 2-amino-5-benzyl-1,3-thiazoles were acylated with carboxylic acid chlorides and plithalic anhydride to afford, respectively, 2-acylamino-5-benzyl-1,3-thiazoles and N-(5-benzyl- 1,3-thiazol-2-yl)phthalimides.
A Convenient Conversion of Substituted Cyclohexenones into Aryl Methyl Ketones
作者:Franz Bracher、André Gehring
DOI:10.1055/s-0032-1316560
日期:2012.8
bi- and tricyclic aryl methyl ketones in one single working process. Crucial steps are the addition of 1-ethoxyvinyllithium to the carbonyl group, followed by acid-catalyzed enol ether hydrolysis, dehydration, and dehydrogenation. This work describes a straightforward multistep conversion of substrates containing a cyclohexenone moiety into mono-, bi- and tricyclic aryl methyl ketones in one single working
Synthesis and Class III antiarrhythmic activity of (phenyl-2-butenyl)ammonium salts. Effect of conformation on activity
作者:Thomas K. Morgan、Ronald A. Wohl、William C. Lumma、Chung Nan Wan、David D. Davey、Robert P. Gomez、Anthony J. Marisca、Martha Briggs、Mark E. Sullivan、Samuel S. Wong
DOI:10.1021/jm00158a014
日期:1986.8
The syntheses of seven 4-(substituted phenyl)but-2-en(or yn)yl quaternaryammoniumsalts and four related tertiary amines are described. The Meerwein arylation reaction was the preferred synthetic method for the required intermediate 1-aryl-4-halo-2-butenes (15a-c, 18). In the case of 18, the trans stereochemistry of the Meerwein adduct of 2,3-dimethylbutadiene was established unambiguously by 2D NMR
The imidazolium salts described are useful as antiarrhythmic agents. A method of treating arrhythmia by increasing the refractoriness of cardiac tissue is provided as well as pharmaceutical formulations containing such imidazolium salts.
The imidazolium salts described are useful as antiarrhythmic agents. A method of treating arrhythmia by increasing the refractoriness of cardiac tissue is provided as well as pharmaceutical formulations containing such imidazolium salts. The compounds are described by the following formula: ##STR1##
Imidazolium salts, intermediates thereto and their use
申请人:SCHERING AKTIENGESELLSCHAFT
公开号:EP0131302A2
公开(公告)日:1985-01-16
The imidazolium salts described are useful as antiarrhythmic agents. A method of treating arrhythmia by increasing the refractoriness of cardiac tissue is provided as well as pharmaceutical formulations containing such imidazolium salts.