Reaction of diazoalkanes with unsaturated compounds. 10. 1,3-Dipolar cycloaddition of diazocyclopropane to strained cycloalkenes Научная публикация
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Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science
ISSN: 2376-8444 , E-ISSN: 0568-5230 |
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| Вых. Данные | Год: 1991, Том: 40, Номер: 5, Страницы: 939-944 Страниц : 6 DOI: 10.1007/bf00961354 | ||
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Реферат:
The reaction of diazocyclopropane, generated in situ by alkaline hydrolysis of N-nitroso-N-cyclopropylurea at −20‡ to −40‡C, with the double bond of norbornene hydrocarbons or 3,3-dimethylcyclopropene is a 1,3-dipolar cycloaddition and affords 45–70% yields of thermally stable 1-pyrazolines possessing a spiro-joined cyclopropane fragment. Methylenecyclopropane under the same conditions is a less effective and selective interceptor of diazocyclopropane, forming in ∿ 10% yields not only isomeric 1-pyrazolines but the corresponding product of cyclopropylization, dispiro[2.0.2.1]heptane.
Библиографическая ссылка:
Tomilov Y.V.
, Shulishov E.V.
, Nefedov O.M.
Reaction of diazoalkanes with unsaturated compounds. 10. 1,3-Dipolar cycloaddition of diazocyclopropane to strained cycloalkenes
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science. 1991. V.40. N5. P.939-944. DOI: 10.1007/bf00961354 OpenAlex
Reaction of diazoalkanes with unsaturated compounds. 10. 1,3-Dipolar cycloaddition of diazocyclopropane to strained cycloalkenes
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science. 1991. V.40. N5. P.939-944. DOI: 10.1007/bf00961354 OpenAlex
Идентификаторы БД:
| ≡ OpenAlex: | W2950110125 |