Non-C 2 -symmetric bisphosphine ligands as catalysts for...

Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus containing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C568S008000, C568S012000

Reexamination Certificate

active

07414156

ABSTRACT:
Non-C2-symmetric bisphospholane ligands and methods for their preparation are described. Use of metal
on-C2-symmetric bisphospholane complexes to catalyze asymmetric transformation reactions to provide high enantiomeric excesses of formed compounds is also described.

REFERENCES:
patent: 5646241 (1997-07-01), Dershem et al.
patent: 6194593 (2001-02-01), Imamoto et al.
patent: 6376715 (2002-04-01), Newman et al.
patent: 0 997 470 (2000-05-01), None
patent: 1 243 591 (2003-07-01), None
patent: 11-80179 (1999-03-01), None
patent: 2000-256384 (2000-09-01), None
patent: 2000-319288 (2000-11-01), None
patent: WO 00 11008 (2000-03-01), None
patent: WO 00 26220 (2000-05-01), None
patent: WO 99 62917 (2000-12-01), None
CA:128:244192 abs of WO 9812202 Mar. 1998.
CA:119:271398 abs of WO 9315090 Aug. 1993.
CA:123:112406 abs of EP643065 Mar. 1995.
CA:120:245502 abs of JP05239076 Sep. 1993.
CA:122:133285 abs of Tetrahedron Asymmetry by Ramsden 5(10) pp. 2033-2044 1994.
CA:120:245450 abs of Inorganic Chem. by Gabbitas et al (22) pp. 3271-3276 1993.
CA:135:257322 abs of JACS by Chatterjee et al (12) pp. 1890-1896 2001.
CA:125:221957 abs of Tetrahedron Letters by Cereghetti et al 37(30) 5347-5350 1996.
CA:125:221957 abs of Tetrahedron Letters by Cereghetti et al 37 (30) pp. 5347-5350 1996.
CA:121:83460 abs of Australian Journal of Chemistry by Bowmaker et al 47(3) pp. 451-460 1994.
Ohashi, Atsushi, et al, “A New Synthetic Route to Unsymmetric P-chirogenic bisphosphine Ligands”, Tetrahedon Letters, (2001), vol. 42, pp. 1099-1101.
Ohashi, Atsushi, et al, “Highly Enantioselective Hydrigenation of a-Dehydroamino Acids by Rhodium Complexes with New Unsymmetric P-Chirogenic Bisphosphine Ligands”. Organic Letters. (2001). vol. 3, No. 3. pp. 373-375.
Ohashi, Atsushi, et al, “Unsymmetrical P-Chirogenic Bis(phosphane) Ligands: Their Preparation and Use in Rhodium-Catalyzed Asymmetric Hydrogentaion”, Eur. J. Org. Chem., (2002), pp. 2535-2546.
Michos, D. et al., “Tungsten(VI) Hexahydride Complexes Supported by Chelating Triphosphine Ligands: Protonation To Give n2-Dihydrogen Complexes and Catalytic Dehydrogenation of Cyclooctane to Cyclooctene”, Inorg. Chem., (1993), vol. 32, Pages.
CA:134:311257 abs of Tetrahedron Letters by Ohashi et al 42(6) pp. 1099-1101 2001 (Abstract Only).
CA:120:152206 abs of Inorganic Chemistry by Bowmaker et al (23) pp. 3593-3600 1993 (Abstract Only).
CA:133:171445 abs of Dalton by Chatterjee et al (12) pp. 1829-1830 2000 (Abstract Only).
CA:120:245450 abs of Inorganic Chemistry by Gabbitas et al (22) pp. 3271-3276 1993 (Abstract Only).
CA:91:122957 abs of Journal of Organic Chemistry by King et al 44(18) pp. 3095-3100 1979 (Abstract Only).
CA:75:129903 abs of Inorganic Physical and Theroretical by Dawson et al (18) pp. 2897-2900 1971 (Abstract Only).
CA:123:112179 abs of Journal of Chem Soc. Chem Comm. by Potyen et al (8) pp. 849-851 1995 (Abstract Only).
CA:97:110089 abs of Chemistry and Industry (5) pp. 163-164 by Briggs et al 1982 (Abstract Only).
CA:101:111030 abs of Tetrahedron Letts. by Kauffam et al 25(19) pp. 1963-1966 1984 (Abstract Only).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Non-C 2 -symmetric bisphosphine ligands as catalysts for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-C 2 -symmetric bisphosphine ligands as catalysts for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-C 2 -symmetric bisphosphine ligands as catalysts for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4018182

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.