硝基甲烷
化学
醋酸铵
催化作用
产量(工程)
溶剂
微波食品加热
微波辐射
有机化学
迈克尔反应
芳基
光化学
高效液相色谱法
冶金
材料科学
物理
烷基
量子力学
作者
José Rodríguez-Morató,M. Dolors Pujol
标识
DOI:10.1016/j.tetlet.2011.03.037
摘要
β-Nitroalcohol or nitroethylene derivatives can be obtained from aryl aldehydes and nitromethane under Henry condensation conditions. We present a new modification using microwave irradiation or ultrasound as the energy source. Microwave irradiation allowed a novel one-pot synthesis of nitroolefins from aryl aldehydes using ammonium acetate as a catalyst without solvent. Different reaction conditions, such as base, solvent, and reaction time were studied. Only small amounts of β-hydroxyl nitro compounds were isolated, using microwave irradiation for less than 25 min. In contrast, the use of ultrasound increased the yield of the nitroalcohols.
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