Rh/DuanPhos-Catalyzed Asymmetric Hydrogenation of β-Acetylamino Vinylsulfides: An Approach to Chiral β-Acetylamino Sulfides
摘要:
Rh/DuanPhos-catalyzed asymmetric hydrogenation of challenging beta-acetylamino vinylsulfides has been developed; affording chiral beta-acetylamino, sulfides with high yield's and excellent ee's (up to, 99% ee). This novel methodology provides an efficient and' concise, synthetic route, to chiral beta-acetylamino sulfides. The potential utility of this protocol in the synthesis of Apremilast has also been disclosed.
Rh/DuanPhos-Catalyzed Asymmetric Hydrogenation of β-Acetylamino Vinylsulfides: An Approach to Chiral β-Acetylamino Sulfides
摘要:
Rh/DuanPhos-catalyzed asymmetric hydrogenation of challenging beta-acetylamino vinylsulfides has been developed; affording chiral beta-acetylamino, sulfides with high yield's and excellent ee's (up to, 99% ee). This novel methodology provides an efficient and' concise, synthetic route, to chiral beta-acetylamino sulfides. The potential utility of this protocol in the synthesis of Apremilast has also been disclosed.
Carbamate derivatives of ketoximes are useful in combatting pests such as insects, mites, and nematodes.
羰酸酯类化合物对抗昆虫、螨和线虫等害虫具有一定的作用。
Method of preparing ketoxime carbamates
申请人:Diamond Shamrock Corporation
公开号:US04234514A1
公开(公告)日:1980-11-18
A novel process of preparing ketoxime carbamate.
制备酮肟氨基甲酸酯的新工艺。
Pesticidal Arylpyrrolidines
申请人:Mihara Jun
公开号:US20120129854A1
公开(公告)日:2012-05-24
The invention is directed to arylpyrrolidines compounds which exhibit excellent insecticidal efficacy and which may be used as in the agrochemical field or in the yield of veterinary medicine. The compounds are represented by formula (I): wherein the respective substituents are defined in the specification.
Effect of structural change on acute toxicity and antiinflammatory activity in a series of imidazothiazoles and thiazolobenzimidazoles
作者:Larry J. Powers、S. W. Fogt、Z. S. Ariyan、D. J. Rippin、R. D. Heilman、Richard J. Matthews
DOI:10.1021/jm00137a022
日期:1981.5
The effect of structural change on the biological activity of a series of imidazothiazoles and thiazolobenzimidazoles is described. It was found that compounds with polar substituents at the 2 or 3 position of the ring system are less acutely toxic while maintaining antiinflammatoryactivity. Other structural changes, such as the incorporation of a gem-dimethyl substituent in the 6 position, increase
Stereochemistry of organic sulphur compounds. part 14 . synthesis and conformation analysis of 1-thioderivatives of 3,3-dimethyl-2-butanol and its acetates
The synthesis and conformational analysis of some thioderivatives But-CHX-CH2Y (X = OH and OAc: Y = SH, SMe, SO2Me and SMe2) are reported. The conformational equilibra have been established from IH-NMR data and high dilution ir studies. All the compounds exhibited almost monoconformational behaviour around the C(1)-C(2) bond, due to strong steric factors. The observed vicinal coupling constants were