Hydration of aromatic terminal alkynes catalyzed by iron(III) sulfate hydrate under chlorine-free conditions
作者:Mauro Bassetti、Samuele Ciceri、Federico Lancia、Chiara Pasquini
DOI:10.1016/j.tetlet.2014.01.083
日期:2014.2
The hydration of aromatic terminal alkynes performed in acetic acid in the presence of catalytic hydrate ironIII sulfate, Fe2(SO4)3·nH2O (4–9 mol %), yields the derived aryl methyl ketones with good to excellent yields. Under comparable conditions (18 mol %, 95 °C, 24 h), bifunctional substrates were transformed into the monoacetyl or the diacetyl derivatives, depending on the structure of the aromatic
在催化水合硫酸铁III铁,Fe 2(SO 4)3 · n H 2的存在下,在乙酸中进行芳族末端炔的水合反应O(4–9 mol%),可生成衍生的芳基甲基酮,收率好至极好。在可比较的条件下(18 mol%,95°C,24小时),根据芳族二炔的结构,将双功能底物转化为单乙酰基或二乙酰基衍生物。该反应与具有不同性质和环位置的芳基取代基相容,包括羟基,羰基和累积的烃。非亲核硫酸根阴离子的柔软特性可以使三键在布朗斯台德酸性介质中朝形成碳氧键的方向活化。所提出的方案基于容易获得且无毒的材料,在溶剂或金属催化剂中均不存在氯原子。