Single-crystal X-ray study T = 83 K Mean '(C±C) = 0.004 A Ê R factor = 0.041 wR factor = 0.092 Data-to-parameter ratio = 9.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
A practical, two-stage preparation of benzyl (3R)-3-amino-2-oxo-1-pyrrolidinecarboxylate (2S,3S)-2,3-bis[(4-methylbenzoyl)oxy]butanediote (2:1)
✍ Scribed by Roger Barrett; Darren M Caine; Kevin S Cardwell; Jason W.B Cooke; Ron M Lawrence; Peter Scott; Åsa Sjolin
- Book ID
- 104360018
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 145 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0957-4166
No coin nor oath required. For personal study only.
✦ Synopsis
A convenient, efficient and cost-effective two-stage synthesis of benzyl (3R)-3-amino-2-oxo-1-pyrrolidinecarboxylate (2S,3S)-2,3-bis[(4-methylbenzoyl)oxy]butanediote (2:1) via a crystallisation-induced dynamic resolution process is reported.
📜 SIMILAR VOLUMES
## Synthesis and transformations of (1R,2R,3S,4R)-4-O- benzylhydroxylamino-2,3-O-isopropylidene-1,2,3-cyclopentanetrioh synthesis of (1S,2R,3S,4R)-4-amino-2,3-O-isopropylidene-l,2,3cyclopentanetriol
Disodium (+)-(Z)-[[[1-(2-amino-4-~2-14C]thiazolyl)-2-[[(2S,3S)-2-(carbamoyloxymethyl)-4-oxo-l-sulfonato-3-azet izinyl]amino-2-oxoethylidene]aminoloxylacetate ([14C]AMA-1080) was synthesized via [2-(2-chloroacetamido-4-[2-~~C]th~azolyl)-(Z)-2-(4-nitrobenzyloxycarbnylmethoxyimino)]acetic acid from [14
The tide compounds were prepared from key intermediates readily obtained by the stereoselective Diels-Alder reaction of (Z)-2-pbenyl-4-[(S)-2,2-dimethyl-l,3dioxolan-4-ylmethylene]-5(4H)-oxazolone, a chiral az-lactone derived from (R)glyceraldehyde and cyclopentadiene.