The reaction between 2-aminobuta-1,3-dienes and pentacarbonyl-[1-methoxy-frans-3-(2-furyl)-prop-2-enylidene]-chromium(0) takes place at room temperature leading with total regio- and stereo-selectivity to functionalized seven-membered carbocycles with good yields.
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Barluenga et al. (1993) studied this question.
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