The first enantioselective synthesis of the 2-isopropenyl-2,3-dihydrobenzofuran skeleton of tremetone and hydroxytremetone from (E)-4-(2-hydroxyphenyl)-2-methyl-2-butenyl methyl carbonate and (E)-4-(2,6-dihydroxyphenyl)-2-methyl-2-butenyl methyl carbonate, respectively, is described. The key step is a catalytic palladium-mediated reaction in the presence of the chiral Trost ligand.

中文翻译：

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立体选择性的2-异丙烯基-2,3-二氢苯并呋喃核的合成：潜在的手性构件的合成的tremetone，hydroxyttyremeremetone和鱼藤酮。

从（E）-4-（2-羟苯基）-2-甲基-2-丁烯基甲基碳酸酯和（E）-4-（分别描述了2，6-二羟基苯基）-2-甲基-2-丁烯基碳酸甲酯。关键步骤是在手性Trost配体存在下催化钯介导的反应。