The Grignard reaction between 1-benzyl-4-piperidone [3612-20-2] (1) and 3-bromobenzotrifluoride [401-78-5] (2) gives 1-benzyl-4-(3-(trifluoromethyl)phenyl)piperidin-4-ol, CID:12718203 (3). Catalytic hydrogenation removes the benzyl protecting group to give 4-[3-(trifluoromethyl)phenyl]-4-piperidinol [2249-28-7] (4). Alkylation with 4-Chloro-4'-fluorobutyrophenone [3874-54-2] (5) introduces the sidechain and hence completed the synthesis of Trifluperidol (6).
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^Gallant DM, Bishop MP, Timmons E, Steele CA (November 1963). "Trifluperidol: a butyrophenone derivative". The American Journal of Psychiatry. 120 (5): 485–7. doi:10.1176/ajp.120.5.485. PMID14051242.
^GB895309 idem P. Adriaan J. Janssen, U.S. patent 3,438,991 (1969 to Res Lab Dr C Janssen Nv).
^彭响亮,
CN 105439811 (2016 to Chengdu Zhongheng Huatie Technology Co Ltd).
^Tacke, R., Nguyen, B., Burschka, C., Lippert, W. P., Hamacher, A., Urban, C., Kassack, M. U. (12 April 2010). "Sila-Trifluperidol, a Silicon Analogue of the Dopamine (D 2 ) Receptor Antagonist Trifluperidol: Synthesis and Pharmacological Characterization". Organometallics. 29 (7): 1652–1660. doi:10.1021/om901011t.