TiCl<sub>4</sub>-promoted desulfurization of thiocarbonyls and oxidation of sulfides in the presence of H<sub>2</sub>O<sub>2</sub>
作者:Kiumars Bahrami、Mohammad M. Khodaei、Vida Shakibaian、Donya Khaledian、Behrooz H. Yousefi
DOI:10.1080/17415993.2011.647915
日期:2012.4.1
TiCl4 proved to be a highly reactive reagent system for the desulfurization of thioamide and thioketone derivatives in excellent yields and short reaction times with high purity. Sulfides were also found to undergo oxidation to sulfones under similar reaction conditions. In most cases, these reactions are highly selective, simple, and clean, affording products in high yields and purity.
Trimethylsilyl Chloride Promoted Selective Desulfurization of Thiocarbonyls to Carbonyls with Hydrogen Peroxide
作者:Kiumars Bahrami、Mohammad Khodaei、Maryam Tajik
DOI:10.1055/s-0030-1258283
日期:2010.12
In the presence of hydrogen peroxide and trimethylsilyl chloride, thiocarbonyls desulfurize to the corresponding carbonyls. The safe, operationally simple, general reaction gives excellent yields in short reaction times with no side reactions and excellent regioselectivity, which makes this process an attractive, environmentally benign alternative for the desulfurization of thiocarbonyls. protecting
Dithiazoles and related compounds. Part 3. Preparation of 5H-1,4,2-dithiazoles via 1,3-dipolar cycloadditions between nitrile sulphides and thiocarbonyl compounds, and some conversions into 3,5-diaryl-1,4,2-dithiazolium salts
作者:Kwok-Fai Wai、Michael P. Sammes
DOI:10.1039/p19910000183
日期:——
Thermolysis of 1,3,4 -oxathiazol-2-ones 3 in the presence of thiocarbonyl compounds gives modest to good yields of the little-known 5H-1,4,2-dithiazoles 1, the reaction being successful with diaryl, aryl alkyl and dialkyl ketones, and thiono esters, but failing with dithio esters and tertiary thioamides. The influence of substituents is discussed. Solvolysis of 5-ethoxy-5H-1,4,2-dithiazoles, derived
在硫代羰基化合物的存在下,对1,3,4-氧杂噻唑-2-酮3的热解反应可得到中等程度的中等收率的鲜为人知的5 H -1,4,2-二噻唑1,该反应可成功地与二芳基,芳基烷基和二烷基酮,以及硫代酸酯,但不能与二硫代酯和叔硫代酰胺结合使用。讨论了取代基的影响。5-乙氧基-5 H -1,4,2-二噻唑类化合物,由硫代酸酯衍生,与高氯酸在乙酸酐中溶剂化,可高产率生成3,5-二芳基-1,4,2-二噻唑鎓盐9。
Thiocarbonyl to carbonyl group transformation using CuCl and NaOH
作者:N. Narasimhamurthy、A.G. Samuelson
DOI:10.1016/s0040-4039(00)83914-3
日期:1986.1
A simple and efficient procedure for the rapid and mild conversion of thiocarbonyls to carbonyls is described.
Plant growth regulating and insecticidal compositions
申请人:Egyt Gyogyszervegyeszeti Gyar
公开号:US04244888A1
公开(公告)日:1981-01-13
Racemic or optically active 2-(propargyloxyimino)-1,7,7-trimethyl-bicyclo[2,2,1]heptane of the formula (I) ##STR1## or a mixture of these isomers is prepared by reacting a racemic or optically active 1,7,7-trimethyl-bicyclo[2,2,1]heptane derivative of the general formula (II), ##STR2## wherein Y stands for oxygen atom, sulfur atom or oxime group, with a propyne derivative of the general formula (III), R--CH.sub.2 --C.tbd.CH (III) wherein R stands for halogen atom or aminooxy group, with the proviso that if Y represents oxime group, R may stand only for halogen, and if R represents aminooxy group, Y may stand only for oxygen or sulfur atom. The resulting product is new and possesses strong plant growth promoting and insecticidal effects.