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Heilmann, Werner and Rahman, Azizur and Bäuml, Englbert and Mayr, Herbert (1988): Carbocationic cyclisations and rearrangements in the damascone series. In: Tetrahedron, Vol. 44, No. 19: pp. 6047-6054
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Abstract

A regio- and stereoselective synthesis of the tertiary chloride 7 is described, involving the Lewis acid catalysed addition of the allyl chloride 6 to isobutene as a key step. Acid catalysed cyclisation of 7 yields the damasconoid compounds 12–15.