题名 | Pyrimido[4,5-c]pyridazines. 6. Pyrimido[4,5-c]pyridazines and 1,2,4-triazines from reactions between 6-hydrazinopyrimidin-4(3H)-ones and vicinal dicarbonyl reagents |
链接 | http://pubs.acs.org/doi/abs/10.1021/jo00203a012 |
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