نتایج جستجو برای: 2H-thiopyran-3
تعداد نتایج: 1816679 فیلتر نتایج به سال:
Three novel diferrocenyl complexes were prepared and characterised. 2,2-Diferrocenyl-4,5-dimethyl-3,6-dihydro-2H-thiopyran (1, sulphide) was accessible by the hetero-Diels-Alder reaction of diferrocenyl thioketone with 2,3-dimethyl-1,3-butadiene. Stepwise oxidation of 1 gave the respective oxides 2,2-diferrocenyl-4,5-dimethyl-3,6-dihydro-2H-thiopyran-1-oxide (2, sulfoxide) and 2,2-diferrocenyl-...
Starting with tetrahydro-2H-thiopyran-4-carboxylic acid and methyl prolinate, the novel 2Hazirin-3-amine (S)-N-(1-aza-6-thiaspiro[2.5]oct-1-en-2-yl)proline methyl ester was synthesized. In reactions with benzoic acid, thiobenzoic acid and Boc-valine, respectively, its usefulness as a synthon for the dipeptide (S)-N-[(4-aminotetrahydro-2H-thiopyran-4-yl)carbonyl]proline in peptide synthesis was ...
An efficient synthesis of 2H-thiopyran-3,4-dicarboxylate derivatives via one-pot reactions between acetylenic esters, arylisothiocyanates and enaminones in water is described.The advantages of this work were: (1) the reaction was performed under neutral and more important in water as the solvent. (2) No catalyst was required for this reaction. (3) The simplicity of the present procedure made it...
An efficient synthesis of 2H-thiopyran derivatives via three-component reaction of alkyl propiolate, benzoyl isothiocyanate or its derivatives and alkyl bromides in the presence of triphenylphosphine in water at 80o C without using any catalyst in water is described. The method offers several advantages including high yields of products and an easy work-up procedure.
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید