The effects of reaction variables on the palladium-catalyzed reactions of butadiene with water

Abstract

The effects of reaction variables on the reactions of butadiene with water in the presence of homogeneous palladium catalysts were investigated. The reactions in the presence of palladium, a phosphine ligand and carbon dioxide comprized telomerization, linear dimerization and cyclodimerization. The rate of reaction and the selectivity to 2,7-octadien-1-ol, 1,3,7-octatriene and 1-methylene 2-vinyl cyclopentane depended strongly upon the ratio of water to butadiene, the ratio of phosphine to palladium, the amount of carbon dioxide and the reaction time. 2,7-Octadien-1-ol that formed initially was subsequently converted to a mixture of 1,7-octadien-3-ol, 1,3,7-octatriene and 1-methylene-2-vinyl cyclopentane, the degree of which depended on the reaction conditions, A possible reaction pathway for the reaction of butadiene with water has been proposed. (C) 2001 Elsevier Science B.V. All rights reserved