Process for preparation of 3-halo-3-methylcephams

Details Process for preparation of 3-halo-3-methylcephams Process for preparation of 3-halo-3-methylcephams

1977-11-21

1979-07-03

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

2602391, 260239A, C07D50102

Patent

active

041600916

ABSTRACT:
3-Halo-3-methylcephams and 2-halomethylpenams are prepared by the reaction of novel azetidinone mercuric sulfides with positive halogenating agents. 3-Halo-3-methylcephams are useful as intermediates to known desacetoxy cephalosporin antibiotics.

REFERENCES:
kamiya et al., Tetrahedron Letters, No. 32, 3001 (1973).
Kukolja et al., J.A.C.S., 97, 3192 (1975).

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