Aliphatic Liquid Crystals, 9. - Stereospecific Reduction of 1-Acyl- to 1-Alkyl-4-phenylcyclohexanes
The title reaction - important for the synthesis of aliphatic liquid crystals - is accomplished by reduction of the tosylhydrazones with sodium cyanoborohydride.While the trans-configurated model ketones 6a, 7a give the tosylhydrazones 10a, 11a, and these