Conversion of clavulanic acid into thiadeoxa nuclear analogues
β Scribed by Peter C. Cherry; Derek N. Evans; Christopher E. Newall; Nigel S. Watson; Peter Murray-Rust; Judith Murray-Rust
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- French
- Weight
- 227 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
Addition of sulphur nuclaophilas to the diena (12) derived via the pen-2-em (5) from clavulanic acid provides the thiadaoxa a=loguas (14x). --X-ray analysis of the aster ( 14) shows the thermodynamically stable isomers to have the same relative staraoxemistry as clavulanic acid.
π SIMILAR VOLUMES
A fast one step oxidation method for converting poorly crystalline graphite, identified by its X-ray diffraction angle of from 26.5 to 26.7", into mellitic acid has been developed. The oxidant used is a mixture consisting of nitric, sulphuric, and perchloric acids in a ratio of 1:6: 1. Oxidation goe