A Simple and Efficient Heterogeneous Procedure for Thioacetalization of Aldehydes and Ketones
作者:Mohammed Hashmat Ali、Maria Goretti Gomes
DOI:10.1055/s-2005-865303
日期:——
A new procedure for the protection of aldehydes and ketones as thioacetals promoted by catalytic amount of p-toluene-sulfonic acid and silica gel has been developed. This procedure offers versatility, short reaction time,excellent yield, good selectivity, and flexibility in terms of choice of solvent that can be utilized in this reaction. The procedure is easy to carry out and does not require aqueous
Zirconium(IV) chloride-silica catalysed thioacetalisation of carbonyl compounds
作者:Harish K Patney、Simon Margan
DOI:10.1016/0040-4039(96)00892-1
日期:1996.6
Anhydrous anhydrous zirconium(IV) chloride dispersed on silica gel efficiently thioacetalised a variety of carbonylcompounds in near quantitative yields
分散在硅胶上的无水无水氯化锆可以以接近定量的收率有效地硫代乙酰化各种羰基化合物
Anhydrous cobalt(II) bromide dispersed on silica gel: A mild and efficient reagent for thioacetalisation of carbonyl compounds
作者:Harish K. Patney
DOI:10.1016/s0040-4039(00)77287-x
日期:1994.8
Anhydrous cobalt(II) bromide dispersed on silica gel has been shown to be a very efficient reagent system for thioacetalisation of a variety of aldehydes and ketones at room temperature.
INDIUM(III) CHLORIDE CATALYZED EFFICIENT CONVERSION OF CARBONYL COMPOUNDS TO 1,3-DITHIOACETALS
作者:J. S. Yadav、B. V. Subba Reddy、Sushil Kumar Pandey
DOI:10.1081/scc-120002509
日期:2002.1.1
ABSTRACT Several aldehydes and ketones were efficiently converted into their corresponding dithioacetals and 1,3-dithianes in high yields using catalytic amount of indium(III) chloride in dichloromethane.
Iron(III) Fluoride: A Highly Efficient and Versatile Catalyst for the Protection of Carbonyl Compounds under Solvent-Free Conditions
作者:Babasaheb P. Bandgar、Vinod T. Kamble、Ashwini Kulkarni
DOI:10.1071/ch05067
日期:——
Carbonylcompounds are successfully converted into oxathioacetals and dithioacetals with 2-mercaptoethanol and ethane-1,2-dithiol using a catalytic amount of iron(iii) fluoride under solvent-free conditions. The catalysts were recovered and reused in various runs without affecting the efficiency of the process.