Organoboron compounds 359. Reaction of 2-pyridylaminoboranes with isocyanates and isothiocyanates
β Scribed by V. A. Dorokhov; L. I. Lavrinovich; B. M. Mikhailov
- Book ID
- 112449896
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 410 KB
- Volume
- 28
- Category
- Article
- ISSN
- 1573-9171
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π SIMILAR VOLUMES
The t i t b compound I rcacts with alkyl (or phenyl) isocyanates 2 in a molar ratio of 1 : t to give the N-monoadducts 3 which cyclim readily to yield the 6-aminouracils 4, whereas in a molar ratio of 1 : 1 mainly N.N-bisadducts 6 and. in LWO cases, small amounts of C.N-bisaadductr 5 are lormcd. The
## Abstract Phenyl isothiocyanate reacts with butyraldazine in presence of acidic catalysts to form a 2βpyrazoline (IV) whereas phenyl or benzyl isocyanates under similar conditions yield a mixture of the two isomeric 2βpyrazolines XIa and XII. On reaction with Ac~2~O, IV gave the 1βacetyl derivati