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Issue 4, 1998

Synthesis of chiral organotin reagents: synthesis of diphenyl- {(1S,2R,3S,4R)-3-(alkoxymethyl)bicyclo[2.2.1]heptan-2-yl}tin hydrides. X-Ray crystal structure of (R)-4,4-dimethyl-2-oxotetrahydrofuran-3-yl (1S,2S,3R,4R)-3-triphenylstannylbicyclo[2.2.1]hept-5-ene-2-carboxylate

Abstract

Conditions have been developed for the stereoselective Diels–Alder addition of cyclopentadiene to (R)-4,4-dimethyl-2-oxotetrahydrofuran-3-yl (E )-3-triphenylstannylprop-2-enoate 10 to give the endo-adduct 14 whose structure has been confirmed by X-ray crystallography. The adduct 14 is converted into (1S,2R,3S,4R)-3-hydroxymethylbicyclo[2.2.1]heptan-2-yl(triphenyl)stannane 22 which is shown to have an enantiomeric excess (ee) of 94%. This alcohol has been converted into its methyl ether (–)-3, trityl ether 25, tert-butyldimethylsilyl ether 26 and 1-naphthoate 27 which give the tin hydrides 4, 31–34 on treatment with iodine and sodium borohydride. Aspects of the chemistry of these enantiomerically enriched tin hydrides are briefly discussed.

Article information


J. Chem. Soc., Perkin Trans. 1, 1998, 717-726
Article type
Paper

Synthesis of chiral organotin reagents: synthesis of diphenyl- {(1S,2R,3S,4R)-3-(alkoxymethyl)bicyclo[2.2.1]heptan-2-yl}tin hydrides. X-Ray crystal structure of (R)-4,4-dimethyl-2-oxotetrahydrofuran-3-yl (1S,2S,3R,4R)-3-triphenylstannylbicyclo[2.2.1]hept-5-ene-2-carboxylate

R. Beddoes, R. M. Pratt and E. J. Thomas, J. Chem. Soc., Perkin Trans. 1, 1998, 717 DOI: 10.1039/A706293A

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