Method for decarbonylation of sugars

Details Method for decarbonylation of sugars Method for decarbonylation of sugars

1995-12-05

1998-04-14

Kight, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 111, 536124, 568863, C07C 2914, C07H 100

Patent

active

057393036

ABSTRACT:
The present invention discloses a method for direct decarbonylation of sugars. The method is based on the conversion of the sugars in the presence of a phosphine metal complex. These complexes are added in catalytic amounts if at the same time urea or an azide such as DPPA (diphenylphosphorylazide) or sodium azide is added. Through the use of other ligands the decarbonylation reaction can also be performed in water.

REFERENCES:
patent: H918 (1991-05-01), Andrews et al.
patent: 3948965 (1976-04-01), Cawse
Journal of Organic Chemistry,vol. 54, No. 22, 27 Oct. 1989, Washington, DC, US, pp. 5257-5264, M.A. Andrews et al "decarbonylation of unprotected aldose sugars by chlorotris-(triphenylphosphine) rhodium (I). A new descent of series approach to alditols".
Collins & Ferrier, Monosaccharides--Their Chemistry and Their Roles in Natural Products, (John Wiley & Sons), p. 4, (1995).

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