Applications of 1,4‐addition of grignard reagents to α,β‐unsaturated acid derivatives. III—configuration studies of α,β‐diaryl‐α,β‐dialkylpropionitriles

Abstract

Abstract-The configuration of twenty-four different a,/%-diarylx,;hdialkylpropionitriles has been determined using nuclear magnetic resonance spectra. The erythro form showed greater deshielding of the methine hydrogen and alkyl groups in its spectra than the corresponding threo isomer. The former, however, showed less deshielding of the aryl groups than the threo isomer. Infrared spectra were not suitable for assignments of configuration.