trans-Hydroindanes possessing an angular methyl group were stereoselectively synthesised via treatment of the four geometrical isomers 1a–1d of 9-rnethoxycarbonyl-4-methyl-1-phenylthionona-1,8-dien-3-one with tert-butyldimethylsilyl trifluoromethanesulphonate in the presence of triethylamine.
M. Ihara, S. Suzuki, N. Taniguchi, K. Fukumoto and C. Kabuto, J. Chem. Soc., Chem. Commun., 1991, 1168 DOI: 10.1039/C39910001168
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