Preparation and Reactions of η3 -Allylcarboxylatoruthenium

Abstract

Abstract Reactions of (1,5-cyclooctadiene)(1,3,5-cyclooctatriene)ruthenium(0) with 3-butenoic acid in the presence of tertiary phosphines, PR3 , afford η3 -allylcarboxylatoruthenium(II) complexes formulated as (PR3)2[xxx](1 (PR3 = PPh3), 2 (PR3 = P(C6H4-p-OCH3)3). The reaction of 1 with carbon monoxide gives the complex (PPh3)2(CO)[xxx] while reaction with Br 2 or I 2 leads to ring closure of the organic ligand to afford 2-butenolide.