Pyridine-2-phospho-carboxylic Acids: Synthesis and Properties
โ Scribed by Dr. Bogdan Boduszek
- Book ID
- 105354057
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 232 KB
- Volume
- 334
- Category
- Article
- ISSN
- 1615-4150
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๐ SIMILAR VOLUMES
The molecules of the title compound, C 6 H 4 ClNO 2 , are almost completely planar. Hydrogen bonds of the form O-Hร ร รN interconnect the molecules to form infinite chains, which are also planar and which are packed face-to-face to form well defined layers of molecules.
## Abstract A synthesis of (6 __R__, 7 __R__)โ7โacylaminoโ2โoxocephemโ4โcarboxylic acids from penicillins is reported based on the formation of the 2โoxocephem system in an intramolecular __Wittig__ condensation. An interesting steric effect of the acylamino grouping on the course of this key step