An Efficient, One-Pot, Triton-B Catalyzed Synthesis of O-Alkyl-S-methyl Dithiocarbonates
作者:Devdutt Chaturvedi、Suprabhat Ray
DOI:10.1007/s00706-006-0514-0
日期:2006.9
A novel process for the one-stepconversion of a variety of primary and secondary alcohols into their O -alkyl- S -methyl dithiocarbonates using methyl iodide catalyzed by the Triton-B/CS2 system was developed. Thus, O -alkyl- S -methyl dithiocarbonates were obtained in very good to excellent yields. This protocol is mild and efficient compared to other methods.
Superoxide Ion–Promoted Facile One-Pot Synthesis of <i>O</i>-Alkyl-<i>S</i>-methyl Dithiocarbonates from Alcohol Under Mild Reaction Conditions
作者:Satish Kumar Singh、Krishna Nand Singh
DOI:10.1080/10426507.2010.482545
日期:2010.12.30
Abstract A new, mild, and efficient protocol for the one-pot synthesis of O-alkyl-S-methyl dithiocarbonates (xanthates) has been described in reasonably good yields from a variety of alcohols employing carbon disulfide and methyl iodide using superoxide ion at room temperature. GRAPHICAL ABSTRACT
One-Pot Synthesis of Functionalized Benzo[<i>b</i>]thiophenes and Their Hetero-Fused Analogues via Intramolecular Copper-Catalyzed S-Arylation of In Situ Generated Enethiolates
作者:Anand Acharya、S. Vijay Kumar、B. Saraiah、H. Ila
DOI:10.1021/acs.joc.5b00032
日期:2015.3.6
An efficient one-pot synthesis of highly functionalized multisubstituted benzo[b]thiophenes and their hetero-fused analogues, such as thieno[2,3-b]thiophenes, indolo[2,3-b]thiophenes, and pyrazolo[3,2-c]thiophenes, has been reported. The overall strategy involves sequential base-mediated condensation of 2-bromohet(aryl)acetonitrile precursors with (het)aryl/alkyl dithioesters or other thiocarbonyl
高效一锅合成高官能度的多取代苯并[ b ]噻吩及其杂合类似物,如噻吩并[2,3- b ]噻吩,吲哚并[2,3- b ]噻吩和吡唑并[3,2] - ç ]噻吩,已有报道。总体策略涉及2-溴己基(芳基)乙腈前体与(杂)芳基/烷基二硫代酯或其他硫代羰基化合物如三硫代碳酸二甲酯,S-甲基黄原酸酯,N-咪唑基二硫代甲基酯,N-烷基二硫代氨基甲酸酯和苯基异硫氰酸酯,然后分子内铜催化的原位生成的烯硫醇酯的芳硫基化,以高收率提供了各种2-官能化的3-氰基苯并[ b ]-和/或杂稠噻吩。
Deoxygenation of alcohols by the reactions of their xanthate esters with triethylsilane: An alternative to tributyltin hydride in the Barton-McCombie reaction
作者:J.Nicholas Kirwan、Brian P. Roberts、Colin R. Willis
DOI:10.1016/s0040-4039(00)97814-6
日期:1990.1
-Alkyl -methyl dithiocarbonates derived from primary or secondary alcohols (ROH) react with trialkylsilanes in non-aromatic solvents to give the corresponding hydrocarbons RH in good yields; the reductions are promoted by thiols which act as polarity reversal catalysts.