| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | indan-1-carbonyl chloride | 19156-10-6 | C10H9ClO | 180.634 |
| 2,3-二氢-1H-茚-1-羧酸 | Indan-1-carboxylic acid | 14381-42-1 | C10H10O2 | 162.188 |
| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | 1-indanylphenylcarbinol | 146393-32-0 | C16H16O | 224.302 |
Epoxy tert-alcohols have been prepared from (E)-enones in a two-step approach consisting of JuliáColonna asymmetric epoxidation followed by Grignard alkylation of the epoxyketone. On treatment with sub-stoichiometric amounts of Yb(OTf)3 these trans-epoxyalcohols underwent efficient stereoselective semi-pinacol rearrangement to afford anti-α-phenyl-β-hydroxy-ketones (aldols). Under the same conditions, spirocyclic epoxyalcohols derived from 1-tetralone and 1-benzosuberone undergo either ring contraction (via semi-pinacol rearrangement) or fragmentation. A mechanistic rationale is presented to explain the formation of the various products.Key words: JuliáColonna reaction, asymmetric epoxidation, epoxy tert-alcohols, semi-pinacol rearrangement.