N-sulfonylimine coumarin derivative and preparation method thereof

The invention discloses an N-sulfonylimine coumarin derivative and a preparation method thereof. The N-sulfonylimine coumarin derivative has a structure shown as a formula (I) in the specification. Inthe formula (I), R1, R2 or R3 is H, a cyano group, a nitro group, a hydroxyl group, a phenyl group, a methylenedioxy group, a C1-C6 alkyl group, a C2-C6 alkenyl group, a C1-C6 alkoxy group, halogen group, a halogenated C1-C6 alkyl group and a halogenated C1-C6 alkoxy group. The N-sulfonylimine coumarin derivative and the preparation method thereof provided by the invention have the advantages ofmild reaction conditions, simplicity and easiness in operation, high product yield, high purity, harmlessness of byproducts, high atom economy and the like, and have good scientific research value andindustrial application prospect. 本发明揭示了一种N-磺酰基亚胺香豆素衍生物及其制备方法，所述N-磺酰基亚胺香豆素衍生物具有如式(I)所示的结构：式(I)中，R1、R2或R3为H、氰基、硝基、羟基、苯基、亚甲二氧基、C1-C6烷基、C2-C6烯基、C1-C6烷氧基、卤素、卤代C1-C6烷基、卤代C1-C6烷氧基。本发明提供的N-磺酰基亚胺香豆素衍生物及其制备方法，反应条件温和，简单易操作，产物产率高、纯度高、副产物无