2-Hydroxyethylammonium formate [2-HEAF] as a mildly basic ionic liquid catalyzed the one-pot pseudo four component condensation reaction of aromatic aldehydes, α-naphthol, malononitrile, and ammonium acetate under thermal solvent-free conditions. This convenient and efficient procedure synthesized 7,10-diaryl-7H-benzo[7,8]chromeno[2,3-d]pyrimidin-8-amine derivatives in short reaction times and good yields.
2-羟乙基
甲酸铵(2-
HEAF)是一种弱碱性
离子液体,可在无热溶剂条件下催化芳香醛、α-
萘酚、
丙二腈和
乙酸铵的一锅法伪四组分缩合反应。这种简便高效的工艺可在较短的反应时间内合成7,10-二芳基-7H-苯并[7,8]苯并
吡喃并[2,3-d]
嘧啶-8-胺衍
生物,且收率较高。