Yttria-Zirconia Based Lewis Acid: An Efficient and Chemoselective Catalyst for Acylation Reactions
作者:Pradeep Kumar、Rajesh Kumar Pandey、Mandar S. Bodas、Mohan K. Dongare
DOI:10.1055/s-2001-10778
日期:——
Yttria-zirconia based strong Lewis acid efficiently catalyzes acylation of alcohols, amines and thiols under environmentally safe, heterogeneous reaction conditions with high selectivity and in excellent yields.
Indium Triflate: An Efficient Catalyst For Acylation Reactions
作者:Kamlesh K. Chauhan、Christopher G. Frost、Ian Love、David Waite
DOI:10.1055/s-1999-2941
日期:1999.11
Indium triflate is shown to be an extremely efficient catalyst for the acylation of alcohols and amines.
三氟化铟显示为一种极其高效的催化剂,用于醇和胺的酰化反应。
Acyl transfer reactions of carbohydrates, alcohols, phenols, thiols and thiophenols under green reaction conditions
作者:Santosh Kumar Giri、K. P. Ravindranathan Kartha
DOI:10.1039/c4ra16916f
日期:——
Acyl transfer reactions of various carbohydrates, alcohols, phenols, thiols and thiophenols were achieved at room temperature in high yields and catalytic efficiency in the presence of methane sulfonic acid, a green organic acid, under solvent-free conditions over short time periods. The method is mild enough to allow acid labile substituents such as isopropylidene acetals and trityl ethers on the
Cu(ClO<sub>4</sub>)<sub>2</sub>·6H<sub>2</sub>O catalyzed solvent free per-O-acetylation and sequential one-pot conversions of sugars to thioglycosides
The solvent free per-O-acetylation of various reducing and non-reducing sugars has been carried out using stoichiometric amounts of acetic anhydride and copper(ii) perchlorate hexahydrate as the catalyst.
Prebiotic carbohydrate synthesis: zinc–proline catalyzes direct aqueous aldol reactions of α-hydroxy aldehydes and ketones
作者:Jacob Kofoed、Jean-Louis Reymond、Tamis Darbre
DOI:10.1039/b501512j
日期:——
Znâproline catalyzed aldolisation of glycoladehyde gave mainly tetroses whereas in the cross-aldolisation of glycoladehyde and rac-glyceraldehyde, pentoses accounted for 60% of the sugars formed with 20% of ribose.