ChemInform Abstract: 2‐Pentylcyclopent‐2‐en‐1‐one by Catalytic Pauson‐Khand Reaction.

Abstract

1991 cyclopentane derivatives cyclopentane derivatives Q 0030 10 -111 2-Pentylcyclopent-2-en-1-one by Catalytic Pauson-Khand Reaction.-First a Co2(CO)6-alkyne complex is created which reacts regioselectively with (II) and (III) to yield the title compound (IV) as major product. The formation of by-products (cyclopentadienones, cyclohexenes and spiro compounds) depends on the pressure of (II) and ( III) and on the concentration of (I).-(RAUTENSTRAUCH, V.; MEGARD, P.; CONESA, J.; KUESTER, W.; Angew.