Fourfold symmetric MCR's via the tetraisocyanide 1,3-diisocyano-2,2-bis(isocyanomethyl)propane.
CHEMICAL COMMUNICATIONS(2020)
摘要
Oligoisocyanides are attractive synthetic targets, however, only a few are known. Here, we describe the smallest stable tetraisocyanide possible, the 1,3-diisocyano-2,2-bis(isocyano-methyl)propane (1) withS(4)symmetry. Its four-step synthesis, structure, and reactivity in unprecedented symmetric fourfold Ugi 4CR and fourfold Passerini 3CR are described. Exhibiting high functional group tolerance and moderate to high yields, we foresee multiple applications of 1,3-diisocyano-2,2-bis(isocyanomethyl)propane, for example in MOFs, COFs, dendrimers, or artificial organs.
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关键词
fourfold symmetric mcr
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