作者:Minoru Koyama、Takafumi Kawakami、Takashi Okazoe、Kyoko Nozaki
DOI:10.1002/chem.201901933
日期:2019.8.14
Methacrylic esters, represented by methyl methacrylate (MMA), are widely used as commodity chemicals. Here, the one-pot synthesis of methacrylic esters from acetone, a haloform and alcohols in the presence of an organic base is described. Using DBU as the organic base for the reaction of acetone, chloroform and methanol in acetonitrile afforded MMA in 66 % yield. When the solvent was replaced by benzonitrile
以甲基丙烯酸甲酯(MMA)为代表的甲基丙烯酸酯被广泛用作商品化学品。在此,描述了在有机碱存在下由丙酮,卤仿和醇一锅法合成甲基丙烯酸酯。用DBU作为丙酮,氯仿和甲醇在乙腈中反应的有机碱,得到MMA,收率为66%。当用苄腈代替溶剂时,通过蒸馏成功地纯化了产物MMA。还研究了该方法对各种醇的适用性,以显示以中等收率获得了乙基,苯基,CF3 CH2和n-C6 F13 CH2 CH2酯。使用溴仿代替氯仿可以提高收率,例如,甲基和n-C6 F13 CH2 CH2酯的收率分别高达81%和70%。