IP Library › Granted Patent US 6,844,462
Granted Patent B2
US 6,844,462 · App. 10/408,493 · Granted Jan 18, 2005

Biphenydiols

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Quick Facts
Patent No.
US 6,844,462
App. No.
10/408,493
Granted
Jan 18, 2005
Kind
B2
Abstract

The invention relates to the biphenyldiols of the formula (V) The corresponding racemic and enantiomerically pure triflate compounds thereof, where R 1 and R 2 are H, R 3 is chlorine, and R 4 is methoxy. In an alternate embodiment, R 1 and R 2 are hydrogen and R 3 and R 4 are C 1 -C 4 -alkoxy, fluorine, or chlorine.

Claims (4)

1. Racemic and enantiomerically pure biphenyldiols of the formula (V)

and the corresponding racemic and enantiomerically pure triflate compounds thereof, where R 1 and R 2 are H, R 3 is chlorine, and R 4 is methoxy.

2. Compounds of the formula (V)

wherein R 1 and R 2 are hydrogen and R 3 and R 4 are C 1 -C 4 -alkoxy, fluorine, or chlorine.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 1, 2006
From: BAYER AG
To: LANXESS DEUTSCHLAND GMBH
Reel/Frame 018584/0319 →