Imidazoline derivatives as alpha-1A adrenoceptor ligands
申请人:Bigham Eric Cleveland
公开号:US06884801B1
公开(公告)日:2005-04-26
Compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof are disclosed. Such compounds are useful in the treatment of Alpha-1A mediated diseases or conditions such as urinary incontinence.
Organic Sulfur Compounds. XII. The Ultraviolet and Infrared Spectra of the Substituted Benzenesulfinic Acids and Their Esters
作者:Michio Kobayashi、Nobuko Koga
DOI:10.1246/bcsj.39.1788
日期:1966.8
The ultraviolet spectra of several substituted benzenesulfinic acids and their ethyl esters have been recorded, and the assignments of the absorption have been disucssed briefly.
Sulfinic Acids and Related Compounds 23. Preparation of Sulfinic Acids by the Reaction of Sulfonyl Halides with Thiols
作者:Chew Lee、Lamar Field
DOI:10.1055/s-1990-26884
日期:——
The reaction of arene- and alkanesulfonyl halides with p-thiocresol in the presence of triethylamine at - 76°C gives triethylammonium sulfinates, which after acidification afford sulfinic acids of 95-100% purity in yields of 51-92% for 18 typical representatives. The synthesis succeeds in certain instances where conventional reduction with aqueous sodium sulfite fails and in other instances often is superior. The method is rapid, mild, selective, convenient, and general, although a few limitations are reported. Characterizations of the sulfinic acids are effected by titration with aqueous sodium nitrite, by IR and 1H-NMR spectra, by preparation of either a S-benzylthiuronium salt or a p-nitrobenzyl ester, and either by elemental analyses or comparison with reported melting points of the acids and derivatives as appropriate.
Herein, we report a solvent- and metal-free methodology for the sulfenylation of indoles with sulfinic acids in the absence of an external catalyst under microwave irradiation. This environmentally friendly approach offered the desired products in moderate to excellent yields in only 10 min. Several functional group tolerances were monitored under the optimized conditions.