Organocatalytic Enantioselective Alkylation of Aldehydes with [Fe(bpy)<sub>3</sub>]Br<sub>2</sub> Catalyst and Visible Light
作者:Andrea Gualandi、Marianna Marchini、Luca Mengozzi、Mirco Natali、Marco Lucarini、Paola Ceroni、Pier Giorgio Cozzi
DOI:10.1021/acscatal.5b01573
日期:2015.10.2
[Fe(bpy)3]Br2 complex in the presence of visible light and the MacMillan catalyst 3 (20 mol %) are highly effective in promoting an enantioselective organocatalytic photoredox alkylation of aldehydes with various α-bromo carbonyl compounds. Reaction yields of isolated compounds and enantioselectivities are very good and comparable to the ones obtained by [Ru(bpy)3]2+, organic dyes, or semiconductors, in
在可见光和MacMillan催化剂3(20 mol%)的存在下,催化量(2.5 mol%)的[Fe(bpy)3 ] Br 2络合物对促进醛与各种α-的对映选择性有机催化光氧化还原烷基化反应非常有效溴羰基化合物。在相同的有机催化剂存在下,分离的化合物的反应产率和对映选择性非常好,可与[Ru(bpy)3 ] 2+,有机染料或半导体获得的反应产率和对映选择性相当。在光催化反应中使用第一排,大量且廉价的金属可以为立体选择性有机合成开辟新的前景。