... Hydroquinone derivatives have been obtained by stoichiometric and catalytic addition of several organic reagents to p-benzoquinone π-bonded to triphenylphosphine Pd° complexes. Download full text in PDF. Journal of Organometallic Chemistry, 54(1973) 35760 357 Elsevier Sequoia SA., Lausanne Printed in The Netherlands CATALYSIS BY PALLADIUM SALTS III. ... 4. P. Roffia, F. Conti, G. Gregorio, GF Pregaglia, It. ... Nature, 217 (1968), p. 543. open in overlay. ...