Vinylogous Nucleophilic Substitution of the Hydroxy Group in Diarylmethanols with 3-Propenyl-2-silyloxyindoles: Towards the Synthesis of <i>α</i>
-Alkylidene-<i>δ</i>
-diaryl-2-oxindoles
作者:Amol P. Jadhav、Amjad Ali、Ravi P. Singh
DOI:10.1002/adsc.201601265
日期:2017.5.2
vinylogous substitution of the hydroxy group of diarylmethyl alcohols with 3‐alkenyl‐2‐silyloxyindoles, which affords broadly substituted α‐alkylidene‐δ‐diaryl‐2‐oxindole products with high efficiency and complete γ‐site and Z‐selectivity. The reaction displays very wide substrate scopes for both the reactants, benzhydryl alcohols and 3‐alkenyl‐2‐silyloxyindoles. The utility of the substituted adducts
我们在此报告为二芳基醇的羟基基团的三氟甲磺酸铟催化插烯取代成3-链烯基-2- silyloxyindoles,一个高度立体选择性方法,该方法得到广泛地被取代的α -alkylidene- δ -diaryl -2-羟基吲哚产品具有高效率以及完整的γ位和Z选择性。对于反应物,二苯甲基醇和3-烯基-2-甲硅烷基氧基吲哚,反应显示出非常宽的底物范围。取代的加合物转化为其他有用的衍生物可显示其效用。