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A Dinuclear Dysprosium Complex as an Air‐Stable and Recyclable Catalyst: Applications in the Deacetylation of Carbohydrate, Aliphatic, and Aromatic Molecules
Author(s) -
Chiu TingYu,
Chin Wei,
Guo JiunRung,
Liang ChienFu,
Lin PoHeng
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201801652
Subject(s) - catalysis , dysprosium , chemistry , monosaccharide , molecule , methylene , phosphide , medicinal chemistry , combinatorial chemistry , organic chemistry , inorganic chemistry
Two dinuclear Dy III complexes, [Dy 2 (hmb) 2 (OTf) 2 (H 2 O) 4 ] ⋅ HOTf ⋅ 2 THF ( A⋅ HOTf ⋅ 2 THF) and [Dy 2 (hmi) 3 (H 2 O) 2 ] ⋅ 2 HOTf ( B⋅ 2 HOTf), have been synthesized by the reaction of Dy(OTf) 3 and the Schiff‐base ligands H 2 hmb ( N ′‐(2‐hydroxy‐3‐methoxybenzylidene)benzohydrazide) or H 2 hmi ((2‐hydroxy‐3‐methoxyphenyl)methylene isonicotinohydrazine). Disarmed glycosyl trichloroacetimidates can be activated by complex A in the synthesis of 1,2‐ trans ‐glycosides with primary and secondary acceptors. This method offers an efficient route to selectively deacetylated monosaccharides and disaccharides in high yields and a green catalyst that can be easily recycled and reused.