Taniguchi T, Suzuki T, Satoh H, Shichibu Y, Konishi K, Monde K. Preparation of Carbodiimides with One-Handed Axial Chirality.
J Am Chem Soc 2018;
140:15577-15581. [PMID:
30398863 DOI:
10.1021/jacs.8b08969]
[Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The axial chirality of carbodiimide was proposed in 1932, but the synthesis of carbodiimide with one-handed axial chirality has not been achieved because of the low barrier of racemization. This work presents a strategy to use a conformationally restrained cyclic structure for creating carbodiimides whose biases of the axial chirality (labeled as SNCN/ RNCN) are higher than 100:1, as determined by vibrational circular dichroism spectroscopy and density functional theory calculations.
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