The simple synthesis of new O,N,O'-tridentate ligands derived from carbohydrates is illustrated. The ligands are obtained by condensing 2-amino--D-glucosides or 2-amino--D-alloside with several 3,5-disubstituted-2-hydroxybenzaldehydes. The efficiency of the imines in the V(IV)-promoted asym. oxidn. of thioanisole has been examd. and ee's up to 60% have been achieved.
O,N,O' tridentate ligands derived from carbohydrates in the V(IV)-promoted asymmetric oxidation of thioanisole / Cucciolito, MARIA ELENA; Roviello, Giuseppina; DEL LITTO, Raffaella; Ruffo, Francesco. - In: JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL. - ISSN 1381-1169. - STAMPA. - 236:(2005), pp. 176-181. [10.1016/j.molcata.2005.04.051]
O,N,O' tridentate ligands derived from carbohydrates in the V(IV)-promoted asymmetric oxidation of thioanisole
CUCCIOLITO, MARIA ELENA;ROVIELLO, GIUSEPPINA;DEL LITTO, Raffaella;RUFFO, FRANCESCO
2005
Abstract
The simple synthesis of new O,N,O'-tridentate ligands derived from carbohydrates is illustrated. The ligands are obtained by condensing 2-amino--D-glucosides or 2-amino--D-alloside with several 3,5-disubstituted-2-hydroxybenzaldehydes. The efficiency of the imines in the V(IV)-promoted asym. oxidn. of thioanisole has been examd. and ee's up to 60% have been achieved.| File | Dimensione | Formato | |
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