Abstract
A tandem method of synthesis of 3-hetaryl-4-nitrofuroxans was developed based on the one-pot sequence of thermolysis of 4-nitrofuroxannitrolic acid to the corresponding 4-nitro-3-furoxancarbonitrile oxide and [3+2] cycloaddition of the latter to acetylenes and olefins. It was established that the synthesized 3-(isoxazol-3-yl)- and 3-(isoxazolin-3-yl)-4-nitrofuroxans are formed with high regioand diastereoselectivity.
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