Synthesis of 3,3-dimethyl-1-phenyl-2-phenylethynylcyclopropene - the first conjugated alkynylcyclopropene

Autor: V. A. Gindin, Yu. V. Dorofeeva, V. V. Semenovskii, Mikhail A. Kuznetsov, A. N. Studenikov
Rok vydání: 1992
Předmět:
Zdroj: Tetrahedron. 48:1269-1280
ISSN: 0040-4020
Popis: The 1,3-cycloaddition reaction of 2-diazopropane with diphenyldiacetylene leads to the mixture of 3,3-dimethyl-5-phenyl-4-phenylethynyl-3H-pyrazole, 3,3-dimethyl-4-phenyl-5-phenylethynyl-3H-pyrazole, and 3,3,3′,3′-tetramethyl-4′,5-diphenyl-4,5′-bi-3H-pyrazolyl. Photolysis of both 3H-pyrazoles gives the title phenylethynylcyclopropene.
Databáze: OpenAIRE