C-15 phosphonate reagent compositions and methods of synthesizin

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

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558137, 558217, C07F 96574, C07F 940

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058471855

ABSTRACT:
Allenic phosphonate reagent compositions are described which have the formula: ##STR1## wherein R and R'=C.sub.1 -C.sub.4 alkyl groups, or R, R'=(CH.sub.2).sub.n
Also described are methods for forming such allenic phosphonates from ethynyl-.beta.-ionol, and for converting these allenic compounds to allylic phosphonate compounds which can be used in the synthesis of a variety of biologically-active materials.

REFERENCES:
patent: 3197497 (1965-07-01), Mark
patent: 4916250 (1990-04-01), Babler
patent: 5061819 (1991-10-01), Babler
patent: B14916250 (1993-06-01), Babler
W. Oroshnik, et al., "The Nef Reaction with .alpha., .beta.-Unsaturated Ketones" J. Am. Chem. Soc., 71, 2062 (1949).
Johnson and Schneider, ".beta.-Carbethoxy-.gamma.,.gamma.-Diphenylvinylacetic Acid" Org. Synth., 30, 18 (1950).
J. Michalski, et al., "Anhydrides of Organophosphorus Acids. Part II. The Synthesis of Tri- and Tetra-alkyl Esters of Phosphorous Phosphoric Anhydride" J. Chem. Soc., 4904 (1961).
M.P. Savage and S. Trippett, "The Rearrangement of Alk-2-enyl Diphenylphosphinites" J.Chem.Soc.(C) 1842 (1996).
M. Freifelder, Practical Catalytic Hydrogenation: Techniques and Applications (Wiley-Interscience, New York, 1971), pp. 143-144.
M. M. Midland, "Preparation of Monolithium Acetylide in Tetrahydrofuran. Reaction with Aldehydes and Ketones." J. Org. Chem., 40, 2250 (1975).
H. Altenbach, et al., "Phosphor-und Schwefelsubstituierte Allene in der Synthese I: Einfache Synthese von .beta.-Ketophosphonaten aus 1-Alkin-3-Olen" Tetrahedron Lett.22, 5157 (1981).
M. J. Szwedo, Jr., Studies Directed Towards The Total Synthesis of Retinoids, Ph.D. Dissertation, Loyola University of Chicago, pp. 24 & 57-59 (1983).
C. Palmer, et al., "Selective Catalytic Hydrogenation of an Olefin Moiety in the Presence of a Terminal Alkyne Function" Tetrahedron Lett., 20, 2857 (1990).
Babler and Schlidt, "An Expedient Route to a Versatile Intermediate for the Steroselective Synthesis of all-trans-Retinoic Acid and beta-Carotene" Tetrahedron Lett., 33, 7697 (1992).
B. C. Ranu, et al., "Regio- and Stereoselective Hydrogenation of Conjugated Carbonyl Compounds via Palladium Assisted hydrogen Transfer by Ammonium Formate" Tetrahedron Lett., 35, 8649 (1994).

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