869895-68-1Relevant academic research and scientific papers
Synthesis of novel paracyclophanes with linear P,N-containing spacers
Ignat'eva,Balueva,Karasik,Kulikov,Kozlov,Latypov,Loennecke,Hey-Hawkins,Sinyashin
, p. 1828 - 1837 (2007)
Condensation of bis(hydroxymethyl)mesityl-and bis(hydroxymethyl) phenylphosphines with N,N′-disubstituted bis(4-aminophenyl)methanes and bis(4-amino-3-carboxyphenyl)methane occurred as covalent self-assembly spontaneously giving a mixture of trans-and cis-diastereomers of 1,5,19,23-tetra-R′-3,21-di-R-1,5,19,23-tetraaza-3,21-diphospha[5.1.5.1] paracyclophanes as the major products. The trans-isomer (R is mesityl; R′ is methyl) was isolated in the individual state and structurally characterized by X-ray diffraction analysis. Sulfurization of macrocyclic diphosphines (R = Ph; R′ is 3-pyridylmethyl or 4-pyridylmethyl) gave the corresponding diphosphine disulfides, the trans-stereoisomer being isolated in the individual state.
