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Convenient synthesis of 1,3-substituted-6-phenylpiperazin-2-ones

✍ 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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✦ 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.


πŸ“œ SIMILAR VOLUMES


Synthesis of Substituted 2-Amino-6H-1,3-
✍ Haukur Kristinsson; Tammo Winkler; Grety Rihs; Hans Fritz πŸ“‚ Article πŸ“… 1985 πŸ› John Wiley and Sons 🌐 German βš– 276 KB πŸ‘ 1 views

## Abstract Derivatives of the unknown 2‐amino‐6__H__‐1,3‐oxazin‐6‐one **2** have been synthesized for the first time in two steps and in excellent yields, starting from __N__‐cyanocarbonimidates **3a**–**c** and cyanoacetates. The structures of **2a**–**c** are assigned by NMR‐spectroscopic method

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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.