An article Chemoselective Cross-Coupling between Two Different and Unactivated C(aryl)-O Bonds Enabled by Chromium Catalysis WOS:000529959000001 published article about CARBON-HETEROATOM BONDS; GRIGNARD-REAGENTS; AROMATIC KETONES; ARYL HALIDES; NI; ETHERS; ACTIVATION; CLEAVAGE; EXPLORATION; ANISOLES in [Tang, Jinghua; Yang, Shangru; Cong, Xuefeng; Luo, Meiming; Zeng, Xiaoming] Sichuan Univ, Coll Chem, Key Lab Green Chem & Technol, Minist Educ, Chengdu 610064, Peoples R China; [Liu, Liu Leo] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA in 2020.0, Cited 60.0. Safety of 2,5-Dimethoxybenzaldehyde. The Name is 2,5-Dimethoxybenzaldehyde. Through research, I have a further understanding and discovery of 93-02-7
We report here the first example of cross-coupling between two different and unactivated C(aryl)-O bonds with chromium catalysis. The combination of a low-cost Cr(II) salt, 4,4′-di-tart-butyl-2,2′-dipyridyl (dtbpy) as the ligand, and magnesium as the reductant shows high reactivity in promoting the reductive cross-coupling of aryl methyl ether derivatives with aryl esters by cleavage and coupling of two different C(aryl)-O bonds under mild conditions. The formation of active low-valent Cr species by reduction of CrCl2 with Mg can be considered, which prefers to initially activate the C(aryl)-O bond of phenyl methyl ether with the chelation help of dtbpy and an o-imine auxiliary. The subsequent consecutive reduction, second C(aryl)-O activation, and reductive elimination allow for the achievement of selective cross-coupling of C(aryl)-O/C(aryl)-O bonds.
Safety of 2,5-Dimethoxybenzaldehyde. About 2,5-Dimethoxybenzaldehyde, If you have any questions, you can contact Tang, JH; Liu, LL; Yang, SR; Cong, XF; Luo, MM; Zeng, XM or concate me.
Reference:
Isothiazole – Wikipedia,
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