C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
260/434, 260/613
C07F 9/50 (2006.01) C07F 9/74 (2006.01) C07F 9/92 (2006.01)
Patent
CA 2005504
A process is disclosed for preparing bidentate ligands of the formula: Image wherein: each of Ar, R, R', R" and Y are specifically defined species; the x bonds and the y bonds are attached to adjacent carbon atoms on the ring structures; and n is a whole number in the range of 0-4 where Ar is phenyl; 0-6 where Ar is naphthyl; and 0-8 where Ar is phenanthryl or anthracenyl. The invention process comprises a. reductively coupling an ortho-substituted aromatic moiety to produce a biphenyl compound; b. contacting the biphenyl compound produced in Step (a) with an anion having the structure: Image or Image wherein Y, Y' and R' are specifically defined species; under conditions appropriate to form said bidentate ligand or the dioxide precursor thereof; and c. optionally reducing the intermediate product when the oxy-anion, Image is employed as the anion in Step (b).
Devon Thomas James
Phillips Gerald Wayne
Puckette Thomas Allen
Stavinoha Jerome Leonard
Devon Thomas James
Eastman Chemical Company
Gowling Lafleur Henderson Llp
Phillips Gerald Wayne
Puckette Thomas Allen
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