Oxidation process for preparing 4-acyloxy azetidinones in a two-

Details Oxidation process for preparing 4-acyloxy azetidinones in a two- Oxidation process for preparing 4-acyloxy azetidinones in a two-

1987-10-13

1991-08-27

Berch, Mark L.

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

Organic compounds

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

C07B 4112, C07D20508

Patent

active

050434403

ABSTRACT:
Process for preparing compounds according to formula (I) ##STR1## wherein R.sub.1 and R.sub.2 represent a hydrogen atom or a protective group and R.sub.3 represents a C.sub.1 -C.sub.10 alkyl or an aryl group, by oxidation of compounds according to formula (II) ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 have the above-mentioned meanings, in a two-phase system comprising:

REFERENCES:
patent: 4882429 (1989-11-01), McCombie
Hanession, J. A., C.S. 107, 1438 (1985).
Sankyo, Chemical Abstracts, vol. 103, 123272t (1985).
Chackalamannil, J. Org. Chem., 53, 450-452 (1988).
Shiozaki, Tetrahedron, 39, 2399-2407 (1983).

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