Aldol reactions of chiral aminoaldehydes and methylacrylate in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) produces β-hydroxy methylbutenoates which can be utilized as psuedodipeptides. However, reaction of aminoaldehydes with acrylamide in the presence of DABCO afforded the adducts derived from the addition of the acrylamide nitrogen to the aldehyde to generate N-acylhemiaminals. These reactions were found to proceed at a faster rate than the typical Baylis-Hillman reaction and also require the presence of DABCO.
手性
氨基醛和
丙烯酸甲酯在1,4-二
氮杂双环[2.2.2]
庚烷(
DABCO)的存在下进行的Aldol反应生成β-羟基甲基
丁烯酸酯,这些产物可以用作伪二肽。然而,
氨基醛与
丙烯酰胺在
DABCO存在下的反应生成的加成物是
丙烯酰胺氮与醛的加成产物,形成N-酰基半
氨基。在这种反应中,发现其反应速度快于典型的Baylis-Hillman反应,并且同样需要
DABCO的存在。