A convenient and stereoselective synthesis of allylic sulfides
作者:Kazunobu Harano、Norihide Ohizumi、Takuzo Hisano
DOI:10.1016/s0040-4039(00)98992-5
日期:1985.1
The fractional distillation of 0-(2-alkenyl or 2-cycloalkenyl) S-alkyl dithiocarbonates (xanthates) affords 2-alkenyl or 2-cycloalkenyl alkyl sulfides. The reaction involves the [3,3]-sigmatropic rearrangement of the xanthates to produce S-(2-alkenyl or 2-cycloalkenyl) S-alkyl dithiocarbonates followed by extrusion of carbon oxysulfide to give 2-alkenyl or 2-cycloalkenyl alkyl sulfides.
Highly efficient catalytic dehydrative S-allylation of thiols and thioic S-acids
作者:Shinji Tanaka、Prasun Kanti Pradhan、Yusuke Maegawa、Masato Kitamura
DOI:10.1039/c0cc00096e
日期:——
A SH-selective allylation method using [CpRu(2-quinolinecarboxylato)(η3-C3H5)]PF6 has been realized in various solvents including aqueous media to give allyl sulfides and allyl S-thioates, demonstrating the potential applicability to lipopeptide chemistry.
of higher thermodynamic stability can be prepared in high purity under either thermal activation or palladium(0) catalysis. Although the thermodynamically less stable regioisomers of 2 are, in general, hard to be prepared in high purity, some of them (e.g., 2d and 2h′) can be obtained with an exclusive or high selectivity by the catalysis of palladium(II). The stereoisomeric pair of 2j and 2j′ can be
By the catalysis of palladium(0), S-allyl thiocarbamates 1 react with aryl iodides and vinyl bromides to give allyl aryl sulfides and allyl vinyl sulfides, respectively, in good yields.
Novel Synthetic Reactions Using Bis(2,2,2-trifluoroethoxy)diorganosulfuranes
作者:Tomoya Kitazume、Nobuo Ishikawa
DOI:10.1246/bcsj.53.2064
日期:1980.7
Alkoxy- or acyloxysulfuranes prepared in situ by the ligand exchange of bis(2,2,2-trifluoroethoxy)diorganosulfuranes with alcohols or carboxylic acids were found to behave as a potential alkylating or acylating reagent for the preparation of unsymmetrical sulfides, ketones, and esters.