Deprotection of Thioacetals Using K2S2O8/[bmim]Br as a Mild and Efficient Reagent under Solvent-Free Conditions
作者:Abdol R. Hajipour、Majid Mostafavi、Arnold E. Ruoho
DOI:10.1007/s00706-007-0650-1
日期:2007.6
A straightforward and effective procedure for the deprotection of thioacetals to the corresponding carbonyl compounds using potassium persulfate and the ionic liquid [ bmim ]Br undersolvent-freeconditions is reported. A variety of aliphatic and aromatic 1,3-dithiolanes or 1,3-dithanes was deprotected to the corresponding carbonyl derivatives by this procedure.
SOLID STATE DEPROTECTION OF THIOACETALS AND THIOKETALS USING 1-BENZYL-4-AZA-1-AZONIABICYCLO[2.2.2]OCTANE PERIODATE AND ALUMINUM CHLORIDE
作者:Abdol Reza Hajipour、Arnold E. Ruoho
DOI:10.1080/00304940509354965
日期:2005.6
for deprotection of thioacetals and thioketals. In recent years, there has been an increasing interest in reactions that proceed in the absence of solvent due to reduced pollution, low costs and simplicity in process and straightforward w~rk-up .~ Because of our interest in development of solvent-free reactions? we now report 1 -benzyl-4-aza-l-azoniabicyclo[2.2.2]octane periodate 1 as an efficient and
Highly Efficient Regeneration of Carbonyl Compounds from Oximes, Tosylhydrazones, 1,3-Dithiolanes, and 1,3-Dithianes Using Cupric Nitrate Supported on Silica Gel
作者:Jong Gun Lee、Je Pil Hwang
DOI:10.1246/cl.1995.507
日期:1995.7
Cupric nitrate supported in silica gel is exceptionally efficient in regenerating aldehydes and ketonesfrom oximes, tosylhydrazones, 1,3-dithiolanes, and 1,3-dithianes.
A convenient method for the preparation of cyclic ketals and thioketals using zirconium sulfophenyl phosphonate as catalyst is described.
描述了一种使用磺基酚磷酸锆作为催化剂制备环酮和硫酮的便利方法。
Magnesium Bromide Mediated Selective Conversion of Acetals into Thioacetals
作者:Jung Ho Park、Sunggak Kim
DOI:10.1246/cl.1989.629
日期:1989.4
Magnesium bromide in ether is found to be a very effective and highly selective reagent for the conversion of acetals into the corresponding thioacetals in the presence of ketones.