Organocatalytic Asymmetric Dearomatization Reaction for the Construction of Axially Chiral Urazole Embedded Naphthalenones
作者:Subhas Pan、Chandrakanta Parida、Siddharth K. Dave、Kousik Das
DOI:10.1002/adsc.202300080
日期:——
Herein we disclose a catalytic asymmetric dearomatization reaction of β-naphthols with 4-aryl-1,2,4-triazole-3,5-diones. A chiral phosphoric acid with spiro motif was found to be effective for this reaction. The chiral urazole embedded naphthalenones having both axial and central chirality were obtained in good to high yields (70–85%) with high diastereo- and enantioselectivities (>20:1, 8–96% ees)
在本文中,我们公开了β-萘酚与 4-aryl-1,2,4-triazole-3,5-diones的催化不对称脱芳构化反应。发现具有螺基序的手性磷酸对该反应有效。具有轴向和中心手性的手性乌拉唑嵌入萘酮以良好到高产率 (70-85%) 获得,具有高非对映和对映选择性 (>20:1, 8-96% ees),具有 C−N 旋转能垒31.54 K.Cal.mol −1和 t 1/2 25 °C=589.8 年。该反应的范围很广,很少有包括溴胺化反应在内的应用得到证实。