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Synthesis of dibenzylamino-1-methylcyclohexanol and dibenzylamino-1-trifluoromethylcyclohexanol isomers†
D. Heulyn Jones,Stefano Bresciani,James P. Tellam,Justyna Wojno,Anthony W. J. Cooper,Alan R. Kennedy,Nicholas C. O. Tomkinson
Organic & Biomolecular Chemistry Pub Date : 10/08/2015 00:00:00 , DOI:10.1039/C5OB01924A
Abstract

The isomers of dibenzylamino-1-methylcyclohexan-1-ol and dibenzylamino-1-trifluoromethylcyclohexan-1-ol have been prepared. The stereochemistry of these compounds was unequivocally assigned through a combination of NMR spectroscopy and single crystal X-ray analysis. The cis-isomer of 3-N,N-dibenzylamino-1-trifluoromethylcyclohexanol and its derivatives display an unusual conformational behaviour in both solution-phase and the solid-state, where the amino group usually adopts an axial conformation.

Graphical abstract: Synthesis of dibenzylamino-1-methylcyclohexanol and dibenzylamino-1-trifluoromethylcyclohexanol isomers
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