Isopropanol → trans-1,2,3,4-Tetrahydro-3-(4-phenyl-1-piperazinyl)-2-naphthalenol

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Reaction Steps

A solution of 7.30 g of 2,3-epoxy-1,2,3,4-tetrahydronaphthalene, 8.91 g of N-phenylpiperazine, and 19 ml of isopropanol in 50 ml of xylene is refluxed for five days. The xylene is removed in vacuo leaving a solid residue, which yields 9.9 g of crude material on trituration with isopropyl ether. Two recrystallizations from ethyl acetate yield 6.5 g of the title compound, melting point 152°-154° C.

Provenance & Evidence