Ring annulation versus alkylation of pyrrole with α-phosphoryl-α,β-unsaturated ketones
作者:Dilek Isik Tasgin、Canan Unaleroglu
DOI:10.1016/j.tet.2016.08.045
日期:2016.9
pyrrolizines were synthesized by the ring annulation reaction of aryl or heteroaryl substituted α-phosphoryl-α,β-unsaturated ketones with pyrrole under mild reaction conditions. This domino reaction involves scandium triflate catalyzed addition of pyrrole to the double bond of α-phosphoryl-α,β-unsaturated ketones, carbonyl group and finally ring annulation sequences. The presented work provided a convenient
在这个研究中; 在温和的反应条件下,通过芳基或杂芳基取代的α-磷酰基-α,β-不饱和酮与吡咯的环环化反应合成了新型的含芳基,杂芳基,吡咯基和磷酰基的吡咯嗪。该多米诺反应涉及三氟甲磺酸scan催化的吡咯向α-磷酰基-α,β-不饱和酮,羰基的双键,羰基的加成,最后是环环化序列。提出的工作为新型双吡咯化合物的合成提供了方便的方法。