Convenient synthesis of 1,3-substituted-6-phenylpiperazin-2-ones
β Scribed by Steven N. Gallicchio; Ian M. Bell
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- French
- Weight
- 493 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
The convenient preparation of novel 6-phenylpiperazin-2-ones from simple starting materials via a practical two-step procedure is presented. This methodology involves an initial alkylation of 2-bromoacetophenone with an amino ester followed by a one-pot reductive amination and cyclization step to furnish the desired substituted piperazinones.
π SIMILAR VOLUMES
## Abstract Derivatives of the unknown 2βaminoβ6__H__β1,3βoxazinβ6βone **2** have been synthesized for the first time in two steps and in excellent yields, starting from __N__βcyanocarbonimidates **3a**β**c** and cyanoacetates. The structures of **2a**β**c** are assigned by NMRβspectroscopic method
A novel and facile synthesis of 6-substituted chiral N-aryl-l,3-oxazin-2-one derivatives has been achieved starting from readily available (A)-aspartic acid.