Plyers-shaped diamines II. 3-Amino-2,4-cyclogranatane diastereomers — A study of influence of structure on the properties of diamines
摘要:
3-Amino-2,4-cyclogranatane 3 beta- and 3 alpha-diastereomers can be synthesized from the corresponding 3 beta-carbonitriles by a kinetically and a thermodynamically controlled reductive decyanation, respectively. Comparison of both diastereomers with respect to basicity, ionization potentials and behaviour towards oxygen demonstrates the influence of the lone pair - lone pair interaction on the properties of diamines. An X-ray structural analysis of a protonated syn diamine established an N ... N -distance of 2.72 Angstrom in this new type of compounds. (C) 1998 Elsevier Science Ltd. All rights reserved.
Plyers-shaped diamines II. 3-Amino-2,4-cyclogranatane diastereomers — A study of influence of structure on the properties of diamines
摘要:
3-Amino-2,4-cyclogranatane 3 beta- and 3 alpha-diastereomers can be synthesized from the corresponding 3 beta-carbonitriles by a kinetically and a thermodynamically controlled reductive decyanation, respectively. Comparison of both diastereomers with respect to basicity, ionization potentials and behaviour towards oxygen demonstrates the influence of the lone pair - lone pair interaction on the properties of diamines. An X-ray structural analysis of a protonated syn diamine established an N ... N -distance of 2.72 Angstrom in this new type of compounds. (C) 1998 Elsevier Science Ltd. All rights reserved.