Efficient and Convenient Deprotection of Thiocarbonyl to Carbonyl Compounds Using 3-Carboxypyridinium and 2,2'-Bipyridinium Chlorochromates in Solution, Dry Media, and under Microwave Irradiation
deprotection reactions is reported. Different types of thioamides, thioureas, thiono esters, and thioketones are deprotected to their corresponding carbonyl compounds with these reagents in good to excellent yields. The reactions were carried out in solution, under solvent-free conditions, and under microwave irradiation. The results show that with both reagents the rates of the reactions and the yields
Bismuth(III) nitrate pentahydrate: a convenient and selective reagent for conversion of thiocarbonyls to their carbonyl compounds
作者:Iraj Mohammadpoor-Baltork、Mohammad Mehdi Khodaei、Kobra Nikoofar
DOI:10.1016/s0040-4039(02)02516-9
日期:2003.1
A variety of thioamides and thioureas are rapidly transformed to their oxoderivatives with Bi(NO3)3·5H2O in excellent yields. However, thiono esters and thioketones are converted to their corresponding carbonyl compounds in only poor yields. Bi(NO3)3·5H2O is relatively non-toxic, insensitive to air and inexpensive. These features coupled with the selective deprotection of thioamides and thioureas
A Facile and Convenient Method for Deprotection of Thiocarbonyls to Their Carbonyl Compounds Using Oxone Under Aprotic and Nonaqueous Conditions
作者:I. Mohammadpoor-Baltork、M. M. Sadeghi、K. Esmayilpour
DOI:10.1080/10426500307781
日期:2003.1.1
The reaction of oxone as an inexpensive, stable, and commercially available reagent with thiocarbonyl compounds in refluxing acetonitrile has been studied. Primary, secondary, and tertiary thioamides and thioureas are converted to their oxo analogues efficiently. Thiono esters also are transformed to their corresponding esters, while thioketones remained intact under these conditions.
Mohammadpoor-Baltork, Iraj; Sadeghi, Majid M. M.; Esmayilpour, Karim, Journal of Chemical Research - Part S, 2003, # 6, p. 348 - 350
作者:Mohammadpoor-Baltork, Iraj、Sadeghi, Majid M. M.、Esmayilpour, Karim
DOI:——
日期:——
Tajbakhsh; Mohammadpoor-Baltork; Alimohammadi, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2003, vol. 42, # 10, p. 2638 - 2640