Synthesis of Ynone Trifluoroborates toward Functionalized Pyrazoles
Organic Letters2012Vol. 14(20), pp. 5354–5357
Citations Over TimeTop 10% of 2012 papers
Abstract
The synthesis of a range of novel ynone trifluoroborates has been achieved, in a two-pot process from propargylic alcohols. These alkynes have been subsequently used in the formation of a range of pyrazole trifluoroborate salts via cyclization with hydrazines. The products are generated with high levels of regiocontrol and in excellent yields and represent versatile synthetic intermediates.
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