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Camphor-derived thioureas: Synthesis and application in asymmetric Kabachnik-Fields reaction
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作者 Pogula Sreekanth Reddy Motakatla Venkata Krishna Reddy Peddiahgari Vasu Govardhana Reddy 《Chinese Chemical Letters》 SCIE CAS CSCD 2016年第6期943-947,共5页
A series of camphor-derived thiourea organocatalysts 3a–f were designed and synthesized from(1R,3S)-camphoric acid 1 and applied to the one-pot three-component Kabachnik–Fields reaction. Catalyst 3c was found to b... A series of camphor-derived thiourea organocatalysts 3a–f were designed and synthesized from(1R,3S)-camphoric acid 1 and applied to the one-pot three-component Kabachnik–Fields reaction. Catalyst 3c was found to be an efficient organocatalyst for the reaction of 2-cyclopropylpyrimidin-4-carbaldehyde 4,various amines 5, and diphenylphosphite 6 to yield the corresponding enantioselective a-aminophosphonates 7a–e in 74%–82% yields and 14%–35% ee. 展开更多
关键词 Asymmetric organocatalysis 1r 3s-camphoric acid Camphor-derived thioureas Chiral a-aminophosphonates Enantioselective Kabachnik-Fields reaction
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