A useful and specific method for the the title reaction (1 → 2) involves treatment with NaBH4 in CF3COOH whereas other procedures from the literature yield hard-to-separate mixtures. 1-Arylcyclohexanols 3 give mainly cyclohexenes with borohydride/trifluoroacetic acid. Their reduction to compounds 4 ,however, is possible with MeSO3H/ NaBH4.
Kinnius, Joerg,Dehmlow, Eckehard Volker
p. 421 - 423
(2007/10/03)
Substituted phenyl trifluoromethyl ethers
Substituted phenyl trifluoromethyl ethers of the formula I in which R1, A1, Z1, n, A2, Z2 and A3 have the meaning given in claim 1, are suitable as components of liquid-crystalline phas