Process for the manufacture of optically active azetidinones

Details Process for the manufacture of optically active azetidinones Process for the manufacture of optically active azetidinones

1984-03-22

1986-09-30

Berch, Mark L.

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

Organic compounds

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

549548, 560 9, 560 39, 560 43, 540200, C07D20508, C07D30348

Patent

active

046146148

ABSTRACT:
The present invention relates to an improved process for the manufacture of (3S)-3,4-trans-disubstituted azetidinones of the formula ##STR1## in which R.sub.1 represents hydrogen or lower alkyl,

REFERENCES:
patent: 4432901 (1984-02-01), Lempert
patent: 4436661 (1984-03-01), Pfaendler
Yanagisawa et al., Tet. Letters 24, 1037 (1983).
Longo et al., Tet. Letters 22, 355 (1981).
Neider et al., Tet. Letters 23, 2293-96 (1982).
"Organic Chemistry", 4th Edition, Morrison & Boyd, pp. 204-205.
Derwent Abstract 98297 E146 fa Japan 57/163,362 (1981).
Shiozaki et al., Tet. Letters 22, 5205 (1981).

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