We report the first terminal trifluoromethylation at aryl and alkyl ketones’ γ, δ, ε, or more remote sites via the selective C–C bond cleavage of cycloalkanols. The noncovalent interactions between alcohols and hypervalent iodines(III) reagents were disclosed to activate both alcohols and the Togni I reagent in the dual photoredox/copper catalysis for the transformation. This reaction was scalable
我们报告了通过环烷醇的选择性 C-C 键断裂在芳基和烷基酮的 γ、δ、ε 或更远的位点发生的第一个末端三氟甲基化。公开了醇和高价碘 (III) 试剂之间的非共价相互作用,以在双光氧化还原/铜催化转化中激活醇和 Togni I 试剂。该反应可扩展到克级合成,适用于结构复杂的类固醇三氟甲基化,并可扩展到五氟乙基化。
NATURAL PRODUCTS VIA REETZ CHEMISTRY SYNTHESIS OF (±)-CUPARENE
作者:Frank G. Favaloro、Christina A. Goudreau、Bradford P. Mundy、Thomas Poon、Sergei V. Slobodzian、Bruce L. Jensen
DOI:10.1081/scc-100104334
日期:2001.1
A concise synthesis of (±)-cuparene via Grignard, trimethylaluminum and dimethyltitanium dichloride (Reetz Alkylation) reactions to form the quaternary centers of (±)-cuparene is reported.