Chemical Behavior of 9-Cyclopentyl-9-borabarbaralane. Diverse Chemoselectivity in the Reactions with Methanol and Other Nucleophiles
作者:Ilya D. Gridnev、Anton Meller
DOI:10.1021/jo972248l
日期:1998.5.1
The 9-cyclopentyl-9-borabarbaralane (3e) was obtained by the reaction of K2C8H8 with cyclo-C5H9BCl2. Upon reaction of 3e with acetone, acetaldehyde, ethoxyacetylene, trideuterioacetonitrile, and acetic acid, only products derived from 9-cyclopentyl-9-borabicyclo[4.2.1]nona-2,4,7-triene (1e) were obtained. On the other hand, by methanolysis of 3e, the boronic ester 17 was formed. The tetracyclic borane 18 is proposed as the intermediate. Possible reasons for this unusual chemical behavior are discussed.
Kloosterziel,H.; ter Borg,A.P., Recueil des Travaux Chimiques des Pays-Bas, 1965, vol. 84, p. 1305 - 1314
作者:Kloosterziel,H.、ter Borg,A.P.
DOI:——
日期:——
Direct metallation of cyclic conjugated hydrocarbons by highly reactive magnesium
作者:U. M. Dzhemilev、A. G. Ibragimov、E. V. Gribanova、L. M. Khalilov