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Functionalized spiro-tetrahydro-β-carbolines were formed by an efficient gold(I)-catalyzed rearrangement reaction of alkynylaziridine indoles. The reaction involved a Friedel–Crafts type intramolecular reaction of alkynylaziridine indoles, following by hydroamination of aminoallene intermediate.
A novel gold-catalyzed rearrangement of α-hydroxy epoxides has been investigated. The reaction proceeds efficiently under mild conditions to afford unsymmetrical 1,5 or 1,6-diketones and monoketones in moderate to high yields. The selective formation of the two products could be controlled by substituents and ring strain.
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