Phosphorylation of derivatives of β-dialkyaminocrotonitriles with phosphorus(III) halides
✍ Scribed by Aleksandr N. Kostyuk; Yurii V. Svyaschenko; Bogdan B. Barnych; Dmitriy A. Sibgatulin; Eduard B. Rusanov; Dmitriy M. Volochnyuk
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 123 KB
- Volume
- 20
- Category
- Article
- ISSN
- 1042-7163
- DOI
- 10.1002/hc.20532
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✦ Synopsis
The reaction of β-dialkylaminocrotontriles with phosphorus(III) halides has been investigated. The basicity of the dialkylamino group influences the phosphorylation markedly, with pyrrolidine being the amine of choice. It was found that a solvent and the ratio of triethylamine play a significant role in phosphorylation. Although chloroand dichlorophosphine derivatives proved impossible to separate as individual compounds; their solutions can be successfully used for further transformations.
📜 SIMILAR VOLUMES
## Abstract The investigation concerns the effect of a bulky substituent at the pyrrole nitrogen atom on the orientation and regioselectivity of pyrrole phosphorylation with phosphorus(III) halides. As shown, phosphorylation of N‐iso‐propylpyrrole with phosphorus tribromide or trichloride proceeds
## Abstract The reaction of phosphorus(III) halides with 6‐substituted imidazo[2,1‐__b__]thiazoles in the presence of bases proceeds regioselectively and affords 5‐phosphinoimidazo[2,1‐__b__]thiazoles, useful synthons for the preparation of various P(III) and P(V) derivatives. 5‐Phosphinoimidazo[2,