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Title: Assessing the effectiveness of different chiral and achiral phosphoric acids in presence of thiourea co-catalyst in co-operative organocatalytic stereoselective glycosylation reactions
Authors: Singh, Govind Pratap
Abirami, Raja
Gurung, Anup
Keywords: Chiral;Achiral;Thiourea;Phosphoric;Acids;Glycosylation;Organocatalysis
Issue Date: Aug-2020
Publisher: NISCAIR-CSIR, India
Abstract: Organocatalytic glycosylation reactions were attempted with an aim to achieve stereoselectivity using chiral TRIP (Binol derived phosphoric acid) and achiral biphenyl phosphoric acids as catalyst and a thiourea derivative as co-catalyst, based on the transition model suggested by Schmidt group[1] during co-operative organocatalysis. Though the stereoselectivity as reported by the Schmidt was not observed, but it was found that the thiourea co-catalyst assisted the catalyst in making the reaction faster, especially in the cases where the catalyst was itself not a strong enough acid.
Page(s): 1206-1215
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.59B(08) [August 2020]

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