Roy Fields and John P. Tomlinson. Preparation of trifluoromethyl-pyrazoles and -pyrazolines by the reaction of 2,2,2-trifluorodiazoethane with carbon-carbon multiple bonds // Journal of Fluorine Chemistry, Vol. 13, Issue 2, 1979, Pages 147-158.
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http://dx.doi.org/10.1016/S0022-1139(00)81083-0Заранее благодарю!