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.
4 芳基-2-苯基-
1,2-二氢酞嗪-1-亚
硫酰与腈
酰亚胺按照 [3 + 2] - 环加成模式发生反应,生成
酞嗪螺
噻二唑。该反应在外环 C=S 键处发生区域选择性反应。