Zheng, Weijia published the artcileCatalytic C-H Trifluoromethoxylation of Arenes and Heteroarenes, HPLC of Formula: 20880-92-6, the publication is Angewandte Chemie, International Edition (2018), 57(31), 9645-9649, database is CAplus and MEDLINE.
The intermol. C-H trifluoromethoxylation of arenes remains a long-standing and unsolved problem in organic synthesis. Herein, is reported the first catalytic protocol employing a trifluoromethoxylating reagent and redox-active catalysts for the direct (hetero)aryl C-H trifluoromethoxylation. The approach is operationally simple, proceeds at room temperature, uses easy-to-handle reagents, requires only 0.03 mol % of redox-active catalysts, does not need specialized reaction apparatus, and tolerates a wide variety of functional groups and complex structures such as sugars and natural product derivatives Importantly, both ground-state and photoexcited redox-active catalysts are effective. Detailed computational and exptl. studies suggest a unique reaction pathway where photoexcitation of the trifluoromethoxylating reagent releases the OCF3 radical that is trapped by (hetero)arenes. The resulting cyclohexadienyl radicals are oxidized by redox-active catalysts and deprotonated to form the desired products of trifluoromethoxylation.
Angewandte Chemie, International Edition published new progress about 20880-92-6. 20880-92-6 belongs to alcohols-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Chiral,Alcohol, name is ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, and the molecular formula is C9H9NO6S, HPLC of Formula: 20880-92-6.
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