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Oxidative dehydrogenative couplings of pyrazol-5-amines selectively forming azopyrroles.

ABSTRACT: New oxidative dehydrogenative couplings of pyrazol-5-amines for the selective synthesis of azopyrrole derivatives have been described. The former reaction simultaneously installs C-I and N-N bonds through iodination and oxidation, whereas the latter involved a copper-catalyzed oxidative coupling process. The resulting iodo-substituted azopyrroles were employed by treatment with various terminal alkynes through Sonogashira cross-coupling leading to new azo compounds.

SUBMITTER: Jiang B

PROVIDER: S-EPMC4017612 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature

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Oxidative dehydrogenative couplings of pyrazol-5-amines selectively forming azopyrroles.

Jiang Bo B Ning Yi Y Fan Wei W Tu Shu-Jiang SJ Li Guigen G

The Journal of organic chemistry 20140422 9

New oxidative dehydrogenative couplings of pyrazol-5-amines for the selective synthesis of azopyrrole derivatives have been described. The former reaction simultaneously installs C-I and N-N bonds through iodination and oxidation, whereas the latter involved a copper-catalyzed oxidative coupling process. The resulting iodo-substituted azopyrroles were employed by treatment with various terminal alkynes through Sonogashira cross-coupling leading to new azo compounds. ...[more]

PMID: 24731223

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