4-Aryl-2-phenyl-1,2-dihydrophthalazine-1-thiones react with nitrile imides according to the [3 + 2]-cycloaddition pattern to give phthalazinespirothiadiazoles. The reaction occurs regioselectively at the exocyclic C=S bond. © 2005 Pleiades Publishing, Inc.
CITATION STYLE
Budarina, E. V., Plotnikov, V. F., Labeish, N. N., Bel’skii, V. K., & Galishev, V. A. (2005). Heterocyclic thiones and their analogs in 1,3-dipolar cycloaddition reactions: IV. Reactions of 4-aryl-2-phenyl-1,2-dihydrophthalazine-1-thiones with nitrile imides. Russian Journal of Organic Chemistry, 41(3), 455–460. https://doi.org/10.1007/s11178-005-0187-x
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