p-Nitrobenzyl (61L7S)-3-hydroxy-8-oxo-7-phenoxyacetamido-l-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 13-keto ester (4) and [(diacetoxy)iodo
Stereoselective Synthesis of (1R,4R,6S)-6-(Dibromoaluminio)-7-(methoxymethyl)menth-2-ene and further Preparation of trans-7-(Methoxymethyl)menth-2-ene Hydroxy- and Oxo-derivatives
β Scribed by Evgeny V. Gorobetz; Aleksander V. Kutchin; Genrikh A. Tolstikov
- Book ID
- 111729538
- Publisher
- Royal Society of Chemistry
- Year
- 1993
- Tongue
- English
- Weight
- 297 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0959-9436
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π SIMILAR VOLUMES
Use of an Iodonium Ylide in the Synthesis of p-Nitrobenzyl (6R,7S) 3-Hydroxy-8-oxo-7-phenoxyacetamido-1-azabicyclo [4.2.0]octa-2-ene-2-carboxylate. -The title compound (IV), a key intermediate in the synthesis of carbacephalosporins, is prepared by Rh(II)-catalyzed cyclization of the iodonium ylide
## Abstract The now corrected Xβray structure of (2__R__)βbornaneβ10,2βsultam ((β)β**1a**), as well as that of its already published __N__βcrotonoyl derivative (β)β**1d**, were compared with those of the newly synthesized (2__R__)βfenchaneβ8,2βsultam ((+)β**5a**), as well as its __N__βcrotonoyl der