题名 | Three-component spiro heterocyclization of 1H-pyrrole-2,3-diones with malononitrile and pyrazolones. Crystal and molecular structure of a spiro[pyrano[2,3-c]-pyrazole-4,3′-pyrrole] |
链接 | http://link.springer.com/article/10.1134/S1070428015060111 |
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