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cis:trans ratios for the protonation of enolate 2 with different salicylates: phenyl salicylate: 89:11; (1′R)-menthyl salicylate: 91:9; (1′S)-menthyl salicylate: 93:7; t-butyl salicylate: 94:6; methyl salicylate: 96:4; ethyl salicylate: 96:4
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cis:trans ratios for the protonation of enolate 2 with different salicylates: phenyl salicylate: 89:11; (1′R)-menthyl salicylate: 91:9; (1′S)-menthyl salicylate: 93:7; t-butyl salicylate: 94:6; methyl salicylate: 96:4; ethyl salicylate: 96:4.
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The use of palladium on charcoal as hydrogenation catalyst caused considerable epimerization at C-2 to give large amounts of trans-3
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The use of palladium on charcoal as hydrogenation catalyst caused considerable epimerization at C-2 to give large amounts of trans-3.
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