Diazaphosphacycles

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

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C568S012000

Reexamination Certificate

active

07071357

ABSTRACT:
A diazaphosphacycle may be synthesized by reacting a phosphine with a diimine and optionally one or more equivalents of an acid halide, a sulfonyl halide, a phosphoryl halide, or an acid anhydride in the substantial absence of O2to form the diazaphosphacycle. The phosphine has the formula R1—PH2where R1is a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted ferrocenyl group.

REFERENCES:
patent: WO 91/17988 (1991-11-01), None
Wilhelm, H., et al., “Zur Reaktion Von Phosphoryl- Und Thiophosphorylisothiocyanaten Mit Phosphanen-Die Kristallstruktur Des (C6H5O)2P(O)-NH-C(S)P(C6H5)2,” Phosphorus, Sulfur, and Silicon, vol. 73, pp. 81-91 (1992), published by Gordon Breach Science Publishers S. A., United States.
Ben-Arroya, B., et al., “Addition of borane-protected secondary phosphines to imines. A route to protected mono-N-substituted-α-aminophosphines,” Tetrahedron Letters, vol. 41, pp. 6143-6147 (2000), published by Pergamon Press Ltd., Oxford, Great Britain.
Landis, C. R. et al., “Rapid Access to Diverse Arrays of Chiral 3,4-Diazaphospholanes,” Angew. Chem. Int. Ed., vol. 40, pp. 3432-3434 (2001), published by Wiley-VCH Verlag GmbH, Weinheim, Germany.
Märkl, G., et al., “1.5-Diaza-3-Phospha-Cycloheptane N.N'-Bis-[Phosphinomethyl]-Ethylendiamine Mit Optisch Aktiven Seitenketten,” Tetrahedron Letters, vol. 21, pp. 3467-3470 (1980), published by Pergamon Press Ltd., Oxford, Great Britain.
Märkl, G., et al., “1.2-Diaza-4-Phospha-Cyclopentane—1.5-Diaza-3.7-Diphospha-Bicyclo-[3.3.0] Octane N.N'-[Bisphosphinomethylen]-N.N'-Dimethylhydrazine 1.3-Diaza-5-Phospha-Cyclohexane,” Tetrahedron Letters, vol. 22, pp. 229-232 (1981), published by Pergamon Press Ltd., Oxford, Great Britain.
Arbuzov, B. A., et al., “Synthesis and Structure of 1,5-Diaza-3,7-Diphosphacyclooctanes,” Bulletin of Academy of Science of USSR, Division of Chemical Science, pp. 1672-1676 (1984), published by Plenum Publishing Corp., New York, New York translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1846-1850, Aug., 1983.
Alcock, N., et al., “Substrate-induced Kinetic Resolution of Racemic Biphosphines in situ for Homogeneous Catalysis,” J. Chem. Soc. Chem. Commun., pp. 1532-1534 (1986), published by Royal Chemical Society, London, England.
Burk, M. J., et al., “New Electron-Rich Chiral Phosphines for Asymmetric Catalysis,” Organometallics, vol. 9, pp. 2653-2655 (1990), published by the American Chemical Society, Washington, D.C.
Burk, M. J., et al., “C2-Symmetric Bis(phospholanes) and Their use in Highly Enantioselective Hydrogenation Reactions,” J. Am. Chem. Soc., vol. 113, pp. 8518-8519 (1991), published by American Chemical Society, Washington, D.C.
Faller, J. W., et al., “Chiral Poisoning: A Novel Strategy for Asymmetric Catalysis,” J. Am. Chem. Soc., vol. 115, pp. 804-805 (1993), published by American Chemical Society, Washington, D.C.
Khairullin, V. K., et al., “Reaction of N,N'-Dibenzylidenehydrazine with Dialkyl Hydrogen Phosphites and Phosphinic and Thioglycolic Acids,” Russian Journal of General Chemistry, vol. 64, No. 4, pp. 557-559 (1994), published by Plenium Publishing Corp., New York, New York.
Kacker, S., et al., “Alternating Copolymers of Functional Alkenes with Carbon Monoxide,” Macromolecules, vol. 29, pp. 5852-5858 (1996), published by American Chemical Society, Washington, D.C.
Jandeleit, B., et al., “Combinatorial Materials Science and Catalysis,” Angew. Chem. Int. Ed., vol. 38, pp. 2495-2532 (1999), published by Wiley-VCH Verlag GmbH, Weinheim, Germany.
Portnoy, M., et al., “Solid-Phase Synthesis of an α-Aminophosphine Library,” J. Comb. Chem., vol. 3, pp. 524-527 (2001), published by American Chemical Society, Washington, D.C.

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

Diazaphosphacycles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diazaphosphacycles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diazaphosphacycles will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3603999

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