186581-53-3
重氮甲烷
+
89227-39-4
5,8-dihydroxy-6,7-dioxonaphthalene-1-carbonitrile
→
~97%
89226-91-5
6,7-dimethoxy-5,8-dioxonaphthalene-1-carbonitrile
60892-43-5
5-amino-2,3-dimethoxynaphthalene-1,4-dione