4-Phenyl-3-trimethylsilylpyrazole (10). A solution of 9 prepared from TMSCHN2 and BuLi was treated with cinnamonitrile 8 (129 mg, 1 mmol) in THF (2 mL). After 0.5 h stirring at -78 ℃ and 1.5 h at -45 ℃, the reaction mixture was quenched with aq NH4Cl. Usual workup and chromatography (silica gel, CHCl3:Et2O, 20:1) gave 190 mg of 10 (88%), mp 117–118.5 ℃.

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编译自：Organic Syntheses Based On Name Reactions, 3RdEd, A. Hassner, Page 367.