Atropisomerism in polymers. Screw-sense selective polymerization of isocyanides by inhibiting the growth of one enantiomer of a racemic pair of helices

…, T Harada, AMF Hezemans, W Drenth

Index: Kamer; Cleij; Nolte; Harada; Hezemans; Drenth Journal of the American Chemical Society, 1988 , vol. 110, # 5 p. 1581 - 1587

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Citation Number: 71

Abstract

Abstract: Isocyanides polymerize under the catalytic activity of Ni (I1) to the corresponding poly (is0cyanides): nRN+= C-E& [RN= C<],. The polymers are of the rigid-rod type, and their molecules have a helical configuration as a result of hindered rotation in their carbon main chains. Upon polymerization, achiral isocyanides generally form a racemic mixture of left- and right-handed helices, whereas in the case of an optically active isocyanide one screw ...

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