Title | Novel boron chelate complexes from the reaction of salicylaldehydes, tertiary amines, and diphenylborinic or phenylboronic acid. Crystal and molecular structures of two new types of chelated organoborate salts |
Publication Type | Journal Article |
Year of Publication | 1997 |
Authors | Kliegel, W, Metge, J, Rettig, SJ, Trotter, J |
Journal | Canadian Journal of Chemistry-Revue Canadienne De Chimie |
Volume | 75 |
Pagination | 1203-1214 |
Date Published | Sep |
Type of Article | Article |
ISBN Number | 0008-4042 |
Keywords | bisboronate, crystal structure, organoboron compound, SALICYLALDEHYDE, salicylaldehyde semiacetal diphenylboron chelate |
Abstract | {The one-pot reaction of equimolar amounts of salicylaldehyde, diphenylborinic acid anhydride, and a tertiary amine in the presence of an alkanol (R’OH) led to the addition of R’OH to the aldehyde group and the formation of an O,O-acetal moiety within the chelate anion with the charge balanced by an ammonium cation arising from the tertiary amine. Exchanging the diphenylborinic acid in the three-component reaction system for phenylboronic acid did not give the analogous adduct or chelate but one additional mole equivalent of phenylboronic acid (anhydride) was incorporated, leading to a polycyclic anion containing pyroboronate and acetal boronate functions with an associated ammonium cation. Crystals of 1-methylpiperidinium 4-ethoxy-2,2-dipheny1-1,3-dioxa-2-borata-1,2,3,4-tetrahydronaphthalenate , 6d, are monoclinic |
URL | <Go to ISI>://A1997YE06300007 |
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