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85030187987
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note
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We have not investigated the direct alkylation of isovaleronitrile with 1-(tert-butyldiphenylsilyloxy)-3-iodopropane.
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Despite extensive experimentation we were unable to effect direct Pd(0)-mediated coupling of the intermediate vinylalane with vinyl bromide.
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For example, see: Corey, E. J.; Da Silva Jardine, P. Tetrahedron Lett. 1989, 30, 7297. For examples of intermolecular Diels-Alder reactions of alkynylsulfones, see: Simpkins, N. S. Sulphones in Organic Synthesis; Pergamon: Oxford, 1993, pp 241-243.
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85030190843
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note
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Atomic coordinates are available on request from the Director of the Cambridge Crystallographic Data Centre, University Chemical Laboratory, Lensfield Road, Cambridge CB2 1EW. Any request should be accompanied by the full literature citation for this work.
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