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关于金属催化的论文
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1. Cyclic cyanamides were incorporated providing 3b, 3c, and 3d in 40, 82, and 35% yields, respectively (entry 2–4). 2. Finally, the challenging terminal alkynenitrile 1c failed to react under these conditions。 3. Efforts to replace the cyanamide substrate with an unactivated nitrile such as PhCN were ineffective as were 3-component cyclizations of 4-CH3PhCCH with either 2 equivalents of free nitriles (i.e., PhCN) or cyanamides (i.e., 2a). |
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