## Abstract Efficient syntheses of (+)‐__N__‐methylpseudoconhydrine (5) and (−)‐hydroxysedamine (10) are described starting from the readily available (2__RS,5S__)‐Methyl 5‐(__tert__‐butyldimethyl‐silyloxy)‐2‐ethoxypiperidine‐1‐carboxylate (1) and proceeding via homochiral acyliminium ion as an int
Synthesis of (2R,5R)-5-Chloropipecolic Acid via a Homochiral Acyliminium Ion Intermediate
✍ Scribed by Herdeis, Claus ;Held, Walter A. ;Kirfel, Armin
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 378 KB
- Volume
- 1994
- Category
- Article
- ISSN
- 0947-3440
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✦ Synopsis
Abstract
An efficient synthesis of (2__R__,5__R__)‐5‐chloropipecolic acid hydrochloride (11) is described, starting from the readily available methyl (S)‐5‐(tert‐butyldimethylsilyloxy)‐2‐oxopiperidine‐1‐carboxylate (3).
📜 SIMILAR VOLUMES
An extremely efficient synthesis of D 5 -2-oxopiperazines in solution phase and on solid support has been established via a Ugi four-component condensation reaction (U-4CC) followed by N-acyliminium ion cyclization between the aldehyde (acetal) functionality and the newly formed amide bond. The desi
## An efficient stereoselective synthesis of Z-(2S)-and Z-(2R)-2-tert-butoxycarbonylamino -6-hydroxyhex-4-enoic acid, key intermediates in the synthesis of (2S,4S,5R)-(-)-and (2R,4R,5S)-(+)-bulgecinine