Lewis acid promoted regio- and stereoselective hetero nucleophilic addition to a piperidinyl aziridine. Synthesis of trans 3-amino-4-substituted piperidines
โ Scribed by X.Eric Hu
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- French
- Weight
- 117 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
A piperidinyl aziridine underwent alcoholic nucleophilic addition with alcohols to result in corresponding trans 3-amino-4-substituted piperidines. The addition reaction was catalyzed by BF 3 โขOEt 2 in excellent regio-and stereoselectivity. The application of this method was extended to the addition of thiols, acids and halogens with sustained regio-and stereoselectivity.
๐ SIMILAR VOLUMES
Piperidinyl aziridine N-phosphonate underwent ring opening in Grignard addition catalyzed by a copper reagent to yield trans 3-amino-4-alkyl-piperidines. The nucleophilic addition occurred trans to the aziridine group and regioselectively at C-4 position of the piperidine ring. The high regioselecti