[6-(4-phenyl-4,5-dihydro-1H-pyrazole-3-carbonyl)pyridin-2-yl]-(4-phenyl-4,5-dihydro-1H-pyrazol-3-yl)methanone 在
盐酸 、 sodium nitrite 作用下,
以65%的产率得到[6-(2-nitroso-4-phenyl-3,4-dihydropyrazole-5-carbonyl)pyridin-2-yl]-(2-nitroso-4-phenyl-3,4-dihydropyrazol-5-yl)methanone