中文摘要：

安息香冷凝作用是重要碳碳形成契约的反应。有好产量，高 enantioselectivity 和宽广底层范围的安息香反应高度在器官的合成被需要。bifunctional 催化的分子间的安息香冷凝作用 N 杂环的 carbenes 被调查了，并且相应 -hydroxyketones 与收益被获得直到 76% 并且 enantioselectivities 直到 99% ee。

英文摘要：

Benzoin condensation is an important carbon-carbon bond-forming reaction. The benzoin reaction with good yield, high enantioselectivity and broad substrate scope is highly desired in organic synthesis. The intermolecular benzoin condensation catalyzed by bifunctional N-heterocyclic carbenes has been investigated, and the corresponding α-hydroxyketones were obtained with yields up to 76% and enantioselectivities up to 99% ee.