The invention discloses an isoquinolinone
dihydropyridine-[1, 2-alpha] indole
spiro compound as well as a preparation method and application thereof, and belongs to the technical field of synthesis of organic compounds. An N-indole connected o-alkynyl
nitrone compound is used as a
raw material, a two-step one-pot method is adopted, and the isoquinolinone
dihydropyridine-[1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, 2, 4] triazolo [1, the invention relates to a novel method for synthesizing a spiro [1, 2-alpha] indole. The method disclosed by the invention has the advantages of simplicity in operation, low catalyst loading capacity, wide reaction substrate range, single
stereoselectivity, high yield and the like. The isoquinolinone
dihydropyridine-[1, 2-alpha] indole
spiro compound prepared by the invention has a certain inhibition effect on phytopathogen, and can be potentially applied to prevention and treatment of tomato gray mold, wheat scab and
rhizoctonia solani.