Use of an iodonium ylide in the synthesis of p-nitrobenzyl (6R, 7S) 3-hydroxy-8-oxo-7-phenoxyacetamino-1-azabicyclo [4.2. 0] octa-2-ene-2-carboxylate
RK Vaid, TE Hopkins
Index: Vaid, Radhe K.; Hopkins, Thomas E. Tetrahedron Letters, 1997 , vol. 38, # 40 p. 6981 - 6984
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Citation Number: 8
Abstract
p-Nitrobenzyl (6R, 7S)-3-hydroxy-8-oxo-7-phenoxyacetamido-1-azabicyclo [4.2. 0] octa-2- ene-2-carboxyate (6) was synthesized utilizing rhodium (II)-or acid-catalyzed cyclization of iodonium ylide (5). The iodonium ylide (5) was easily prepared from the corresponding β- keto ester (4) and [(diacetoxy) iodo] benzene in good yield.
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