摘要/Abstract
在有机磷催化下，γ-甲基联烯酸酯和烯基茚二酮经过[3+2]环加成反应，以中等到较好的产率、高化学选择性和非对映选择性形成一系列官能团化的螺环化合物.该反应具有操作简单、反应条件温和和底物适用性广等优点.需要指出的是，使用简单易得的PPh3作为催化剂，就能实现完全的α-区域选择性加成的环化产物.
关键词: 有机磷催化, γ-甲基联烯酸酯, [3+2]环化反应
The phosphine-catalyzed[3+2] annulation of γ-methyl allenoates with 2-arylidene-1H-indene-1,3(2H)-diones is reported. In the reaction, a series of highly functionalized spiro[4.4]dec-6-ene skeletons were obtained in moderate to good yields and high diastereoselectivities. It should be noted that the perfect α-regioselective annulation adducts were obtained with simple PPh3 catalyst.
Key words: phosphine-catalyzed, γ-methyl allenoates, [3+2]annulation
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