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- W4321434235 abstract "A series of vanadyl complexes bearing 3-t-butyl-5-bromo, 3-aryl-5-bromo, 3,5-dihalo-, and benzo-fused N-salicylidene-tert-leucinates was examined as catalysts for 1,2-alkoxy-phosphinoylation of 4-, 3-, 3,4-, and 3,5-substituted styrene derivatives (including Me/t-Bu, Ph, OR, Cl/Br, OAc, NO2 , C(O)Me, CO2 Me, CN, and benzo-fused) with HP(O)Ph2 in the presence of t-BuOOH (TBHP) in a given alcohol or cosolvent with MeOH. The best scenario involved the use of 5 mol % 3-(2,5-dimethylphenyl)-5-Br (i.e., 3-DMP-5-Br) catalyst at 0 °C in MeOH. The desired catalytic cross coupling reactions proceeded smoothly with enantioselectivities of up to 95 % ee of (R)-configuration as confirmed by X-ray crystallographic analysis of several recrystallized products. The origin of enantiocontrol and homolytic substitution of the benzylic intermediates by vanadyl-bound methoxide and radical type catalytic mechanism were proposed." @default.
- W4321434235 created "2023-02-22" @default.
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- W4321434235 date "2023-03-08" @default.
- W4321434235 modified "2023-09-23" @default.
- W4321434235 title "Enantioselective Radical‐Type 1,2‐Alkoxy‐Phosphinoylation to Styrenes Catalyzed by Chiral Vanadyl Complexes" @default.
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- W4321434235 doi "https://doi.org/10.1002/anie.202300654" @default.
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