## 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 Nβisoβpropylpyrrole with phosphorus tribromide or trichloride proceeds
Phosphorylation of 2-( N , N -Dimethylaminomethylidenamino)thiophenes(furans) with Phosphorus(III) Halides
β Scribed by Kovalyova, Svetlana A.; Ivonin, Sergey P.; Tolmachev, Andrey A.; Pinchuk, Alexander M.
- Book ID
- 121498119
- Publisher
- Taylor and Francis Group
- Year
- 2002
- Tongue
- English
- Weight
- 52 KB
- Volume
- 177
- Category
- Article
- ISSN
- 1042-6507
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π SIMILAR VOLUMES
The reactions of N-methyl-and N-phenylpyrazole derivatives with phosphorus(ll1) halides have been studied. The preparative method for synthesis of a variety of 4-phosphorylated pyrazoles, including pyrazolyl substituted halo-and dihalophosphines, has been elaborated. Migration of an alkyl group from
The reaction of Ξ²-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 rol