K. Miyashita et al., REGIOSPECIFIC BROMINATION-CYCLIZATION OF SPIROCYCLIC CYCLOHEXANONES AND ITS APPLICATION TO THE SYNTHESIS OF (+ -)-LAURENCIAL/, Tetrahedron, 54(8), 1998, pp. 1395-1406
Stereospecific bromination-cyclization of spirocyclic cyclohexanones h
aving an isopropylidenedioxy group was found to proceed under thermody
namically controlled conditions, which was applied to the first synthe
sis of (+/-)-laurencial and its epimer. (C) 1998 Elsevier Science Ltd.
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