Adinolfi M, Barone G, Iadonisi A, Schiattarella M. Activation of glycoyl trihaloacetimidates with acid-washed molecular sieves in the glycosidation reaction.
Org Lett 2003;
5:987-9. [PMID:
12659555 DOI:
10.1021/ol027353i]
[Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Commercially available 4 A acid washed molecular sieves (4 A AW 300 MS) are efficient activators of glycosyl trichloro- and N-phenyltrifluoroacetimidates. These promoters allow glycosidation of primary and secondary saccharidic acceptors to be performed in high yield, under very mild conditions and by an experimentally simple procedure. In addition, the recyclability of such promoters also has been demonstrated.
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