Methanol → (+/-)-4-(alpha-(trans-2,5-dimethyl-1-piperazinyl)-5-(tert-butyldimethylsilyloxy)-2-fluorobenzyl)-N,N-diethylbenzamide

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Reaction Steps

The benzhydrol from above (1.77 g, 4.1 mmol) was treated with thionyl chloride (0.45 mL, 6.2 mmol) by the method in Example 1. The crude product (approximately 4.1 mmol) was treated with trans-2,5-dimethylpiperazine (1.64 g, 14.3 mmol) as in Example 1. Chromatography on silica gel with 1-7% methanol in dichloromethane gave 0.44 g (20% from benzhydryl chloride) of (±)-4-(α-(trans-2,5-dimethyl-1-piperazinyl)-5-(tert -butyldimethylsilyloxy)-2-fluorobenzyl)-N,N-diethylbenzamide as a yellow oil.

Provenance & Evidence