Patent ID: 6777567
Filing Date: 2004-08-17
Classification: B01J,C07B,C07C,C07F

Abstract:
A compound of the formula I or Ia in the form of a racemate, a mixture of diastereomers or in essentially enantiomerically pure form, whereR is hydrogen, C1-C8alkyl, C5-C12cycloalkyl, phenyl or phenyl substituted by from 1to 3 C1-C4alkyl or C1-C4alkoxy groups; n is 0 or an integer from 1 to 4 and Râ€² are identical or different substituents selected from the group consisting of C1-C4alkyl, C1-C4fluoroalkyl and C1-C4alkoxy; X1 and X2 are each, independently of one another, secondary phosphino; T is C6-C20arylene or C3-C16heteroarylene; and X2 is bound in the ortho position relative to the T-cyclopentadienyl bond.