Process for the preparation of 3-substituted-2-azetidinones

Details Process for the preparation of 3-substituted-2-azetidinones Process for the preparation of 3-substituted-2-azetidinones

1992-03-23

1993-10-05

Berch, Mark L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540205, 540355, 540360, 540362, 540363, 540364, C07D20585, C07D20508, C07F 3900, C07F 4506

Patent

active

052506762

ABSTRACT:
Provided is a process for diastereoselectively preparing compounds of the formula ##STR1## which includes the step of subjecting a compound of the formula ##STR2## to a salt whose anion is a nucleophilic base whose conjugate acid has a pKa in the range of between about -7 to about 14, or a silylated derivative of the salt; wherein

REFERENCES:
Gasparski, JACS 114, 2741 (1992).
Atanu, B., and Miller, M., "Rearrangement of N-(p-toluenesulfonyloxy)-2-pyrrolidinone," Heterocycles, 26, No. 11, 2849 (1987).

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