Ethylene Glycol → 1-(8-Chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin-10-yl)piperazine

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Reaction Steps

95 G. of 1-carbethoxy-4-(8-chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin-10-yl)-piperazine are stirred together with 1,000 ml. of ethyleneglycol, 77 g. of potassium hydroxide and 10 ml. of water on a bath of 160° for 6 hours. The reaction mixture is poured over ice water and extracted with ether. The ether extract is washed with water, dried and evaporated, whereby 1-(8-chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin-10-yl)-piperazine is obtained as a red-brown viscous oil. After recrystallization from acetone/petroleum ether the product is obtained as crystals having a melting point of 125°-127°.

Provenance & Evidence