Mercury (II)??Catalyzed Synthesis of Spiro [4.5] decatrienediones from Allenyl Ketones and Comparison with Silver (I)??, Palladium (II)??and Brønsted Acid??Catalyzed …

ASK Hashmi, L Schwarz, JW Bats

文献索引：Hashmi, A. Stephen K.; Schwarz, Lothar; Bats Advanced Synthesis and Catalysis, 2000 , vol. 342, # 1 p. 40 - 51

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被引用次数: 40

摘要

Abstract The allenyl p-methoxybenzyl ketone 3a and allenyl p-siloxybenzyl ketones 6b selectively delivered three different products with three different transition metal-catalysts. With Hg (II)-catalysts a spiro [4.5] decene 9, with Ag (I)-catalysts a 2-substituted furan (10/11) and with Pd (II)-catalysts a 2, 4-disubstituted furan (8/12) was formed. Only with perchloric acid the intermolecular addition of water to the allene, leading to 1, 3-dicarbonyl ...