Chiu, Ting-Yu published the artcileA Dinuclear Dysprosium Complex as an Air-Stable and Recyclable Catalyst: Applications in the Deacetylation of Carbohydrate, Aliphatic, and Aromatic Molecules, Recommanded Product: Benzyl acetate, the main research area is dinuclear dysprosium complex catalyst green preparation; alc green preparation chemoselective; ester deacetylation dinuclear dysprosium catalyst; carbohydrates; deacetylation; dysprosium; homogeneous catalysis.
Three dinuclear dysprosium complexes, [Dy2(hmb)2(OTf)2(H2O)4].HOTf.2THF (A.HOTf.2THF), [Dy2(hmb)2(OTf)2(H2O)4].(CH3)2CO (A.(CH3)2CO) and [Dy2(hmi)3(H2O)2].2HOTf (B.2HOTf), were synthesized by the reaction of Dy(OTf)3 and the Schiff-base ligands H2hmb (N’-(2-hydroxy-3-methoxybenzylidene)benzohydrazide) or H2hmi ((2-hydroxy-3-methoxyphenyl)methylene isonicotinohydrazine). Complex A.HOTf.2THF was an effective and chemoselective catalyst for the deacetylation of esters in methanol. This method offered an efficient route to selectively deacetylated monosaccharides and disaccharides in high yields and a green catalyst that can be easily recycled and reused. This method was especially valuable for the preparation of peracetylated hemiacetal of monosaccharides and disaccharides with yields of 85 to 88 and 65 to 85%, resp. Complex (B.2HOTf), in comparison, indicated that coordinated triflate ions were key to activation of the regioselective anomeric deacetylation.
Chemistry – An Asian Journal published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Recommanded Product: Benzyl acetate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics