A green and environmentally friendly cascade reaction of diethyl (2-phenylacetyl)phosphonate with benzylidenemalononitrile promoted by Zr-Ce-SBA-15-NH2 in water was developed, and a wide range of highly functionalized 4H-pyrans containing phosphonate motif were obtained in up to 89% yield. Moreover, SBA-15-NH2 also showed good catalytic activity for this transformation in acetonitrile.
                                    Zr-Ce-SBA-15-NH 2促进
二乙基(2-苯基乙酰基)
膦酸酯与亚苄基
丙二腈在
水中的绿色环保级联反应,得到了广泛的含
膦酸酯基序的高官能化4 H-
吡喃收率高达 89%。此外,SBA-15-NH 2也对
乙腈中的这种转化表现出良好的催化活性。