A series of bifunctional metal-free photo-organocatalysts have been developed by grafting the photosensitizer to cinchona-derived phase-transfer catalysts. Using air as a green oxidant and visible light as the driving force, these catalysts are applied to the oxidation of a range of β-dicarbonyl compounds in good yields (up to 97%) and enantioselectivities (up to 93:7 er).

中文翻译：

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β-二羰基化合物对映选择性好氧氧化的双功能无金属光有机催化剂

通过将光敏剂接枝到金鸡纳衍生的相转移催化剂上，已经开发出了一系列无金属双功能的光有机催化剂。使用空气作为绿色氧化剂，并以可见光作为驱动力，这些催化剂以良好的收率（高达97％）和对映选择性（高达93：7 er）应用于一系列β-二羰基化合物的氧化。