have found limited use as catalysts. We demonstrate the TAPS-catalyzed carbon dioxide fixation at atmospheric pressure for the coupling reaction with epoxides. Five-membered cyclic carbonates were obtained, including enantio-enriched carbonates. Mechanistic studies revealed the origin of the behavior of TAPS to be the in situ formation of an active species by TAPS addition to epoxides via halohydrin intermediates
salts盐在有机合成中显示出巨大的实用性。然而,发现四芳基phosph盐(
TAPS)用作催化剂的用途有限。我们证明了在大气压力下
TAPS催化的
二氧化碳固定与
环氧化物的偶联反应。得到五元环状
碳酸酯,包括对映体富集的
碳酸酯。机制研究揭示
TAPS的行为的起源是在原位通过
TAPS除了
环氧化物通过卤代醇中间体的形成的活性物质。