Easy synthesis of a new C2-symmetric diaza-crown ether from L-threonine
✍ Scribed by Jean-Pierre Joly; Gerhard Schröder
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 100 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
The 1:1-cyclocondensation of a contrafunctional chiral amine easily obtained from L-threonine in four steps yielded the new C2-symmetric diaza-crown ether 5.
📜 SIMILAR VOLUMES
The oxidation of a C 2 symmetric piperidine, obtained through a ring enlargement process of the enantiopure protected (4R)-hydroxy-(2S)-hydroxymethyl pyrrolidine, is reported. Oxidation with C-phenyl-N-phenylsulfonyloxaziridine afforded the corresponding nitrone that is too unstable for isolation an
A practical synthesis of a new C2-symmetric vicinal diol, (2R. 3R)-1,4-dimethoxy-1,1,4,4tetraphenyl-2,3-butanediol, from dimethyl L-tartrate involving five steps in overall yield of 38% is described.
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