The reaction of carbonyl compounds with 2-mercaptoethanol to prepare 1,3-oxathiolanes has been successfully carried out in ionic liquids using ytterbium(III) triflate as a catalyst. Yields of the products are high and the catalyst can be easily recovered and reused in this reaction.
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.
A mild and efficient method for the protection of carbonyl compounds as oxathiolanes, dithiolanes and dithianes catalyzed by molybdenyl acetylacetonate
作者:Kalyan Kumar Rana、Chandrani Guin、Samaresh Jana、Subhas Chandra Roy
DOI:10.1016/j.tetlet.2003.09.146
日期:2003.11
Carbonylcompounds have been successfully converted into their corresponding oxathiolane, dithiolane and dithiane derivatives in excellent yields with 2-mercaptoethanol, 1,2-ethanedithiol and 1,3-propanedithiol using a catalytic amount of molybdenyl acetylacetonate.
CERIC AMMONIUM NITRATE AS A CONVENIENT CATALYST FOR PROTECTION OF CARBONYL COMPOUNDS AS 1,3-OXATHIANES
作者:Gourhari Maiti、Subhas Chandra Roy
DOI:10.1081/scc-120005996
日期:2002.1
method for the protection of carbonyl compounds as 1,3-oxathianes has been established by the catalytic use of ceric ammonium nitrate at ambient temperature. While different types of aryl and alkylketones and aldehydes were protected smoothly, cyclic aryl ketones and diaryl ketones remained unaffected under the reaction conditions.