Process for the preparation of 4-(formylthio)-azetidin-2-one der

Details Process for the preparation of 4-(formylthio)-azetidin-2-one der Process for the preparation of 4-(formylthio)-azetidin-2-one der

1998-03-05

2000-01-11

Berch, Mark L.

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

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

540354, C07D20509

Patent

active

060137916

ABSTRACT:
A process for the preparation of a compound of formula (IVA) which process comprises subjecting a compound of formula (V), where R is an ester-forming group or carboxy-protecting group, and X and Y are hydrogen or halogen provided that at least one of X or Y is halogen, to reductive formylation.

REFERENCES:
Journal of the American Chemical Society, vol. 107, No. 22, Oct. 30, 1985, Gaston<PA US pp. 6398-6399.
Journal of the Chemical Society, Chemical Communications, No. 6, Mar. 15, 1989, Letchworth GB pp. 371-373, N.F. Osborne et al.
Alpegiani, et al., "Reactivity parameters of the metal assisted 1, 2-cleavage of penicillins", Heterocycles, 31(4), pp. 617-628 (1990).

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