Gold(III)-catalyzed formal [3+2] cycloaddition of p-quinones with 1-phenylpropenes in an ionic liquid, [EMIM][NTf2], enabled environmentally friendly, stereoselective synthesis of 2,3-dihydrobenzofuran neolignans in good yields. Moreover, the recycle of tThe gold catalyst in /ionic liquid was achievedcould be recycled at least five times, affording 2,3-dihydrobenzofuran in good yields.

中文翻译：

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金催化的形式[3 + 2]环加成

在离子液体[EMIM] [NTf 2 ]中，金（III）催化对苯醌与1-苯基丙烯的正式[3 + 2]环加成反应，实现了环境友好，立体选择性地合成2,3-二氢苯并呋喃新木聚糖。而且，可以实现金催化剂在/离子液体中的再循环至少五次，从而以良好的收率得到2，3-二氢苯并呋喃。