Synthesis, characterization and X-ray studies of new six–seven membered rings [4.5.0] heterobicyclic system of monomeric boronates
作者:José María Rivera、Enrique Méndez、Raúl Colorado-Peralta、Susana Rincón、Norberto Farfán、Rosa Santillán
DOI:10.1016/j.ica.2012.03.055
日期:2012.7
Different tridentate ligands derived from ethanolamines and 2-hydroxyacetophenone, 2-hydroxybenzophenone and salicylaldehyde were reacted with two equivalents of phenylboronic acid to obtain compounds 6a-6f which are [4.5.0] heterobicyclic systems with a B-O-B structural unit. The boronates were fully characterized and two heterobicyclic [4.5.0] structures have been analyzed by X-ray crystallography, where a series of parameters such as bond distances, bond angles, torsion angles, tetrahedral character at the boron atom and deviation of the boron atom from the mean plane have been evaluated. (C) 2012 Elsevier B.V. All rights reserved.