The catalytic activity of β‐cyclodextrin immobilized on Dowexresin as an efficient solid‐liquid phase transfer catalyst was developed for the synthesis of alkyl thiocyanates and phenacyl derivatives in water. The nucleophilicsubstitutionreactions were performed under mild reaction condition and gave the products in excellent yields. Furthermore, the catalyst could be recycled by facile separation
Comparison of unstired, sonicated and stirred mixtures on the two-phase displacement of halide by thiocyanate ion
作者:W.Preston Reeves、John V. McClusky
DOI:10.1016/s0040-4039(00)81716-5
日期:——
The two-phase catalytic reaction of alkyl halides with aqueous thiocyanateion has been found to proceed readily in stirred, unstirred, and sonicated solutions.
The intramolecular formation of epithioalkanenitriles from alkenylglucosinolates by Crambe abyssinica seed flour
作者:Erich R. Brocker、M.H. Benn
DOI:10.1016/s0031-9422(00)86982-4
日期:1983.1
Abstract Enzymatic degradations of mixtures of potassium 3-butenylgluco [1- 35 S]sinolate and allylglucosinolate by aqueous suspensions of Crambe abyssinica seed flour led to the formation of 4,5-epi[ 35 S]thiopentanenitrile and essentially unlabelled 3,4-epithiobutanenitrile. The formation of epithioalkanenitriles from alkenylglucosinolates is, therefore, deduced to be an intramolecular process.
Thiocyanation and 2-Amino-1,3-thiazole Formation in Water Using Recoverable and Reusable Glycosylated Resorcin[4]arene Cavitands
作者:Ali A. Husain、Kirpal S. Bisht
DOI:10.1021/acs.joc.0c01150
日期:2020.8.7
resorcin[4]arene cavitand glycoconjugates (RCGs) have been applied as efficient recoverable and reusable inverse phase transfer catalysts for eco- and environmentally friendly thiocyanation and 2-amino-1,3-thiazole formation reactions in water. The results show that RCGs (1 mol %) were capable of hosting and catalyzing various water-insoluble bromo/thiocyanato substrates in water without the use of any co-organic