《Efficient Assembly of Molecular Complexity Enabled by Palladium-Catalyzed Heck Coupling/C(sp2)-H Activation/ C(sp3)-H Activation Cascade》 was published in Advanced Synthesis & Catalysis in 2020. These research results belong to He, Chen; Han, Wen-Yong; Cui, Bao-Dong; Wan, Nan-Wei; Chen, Yong-Zheng. COA of Formula: C7H6BrCl The article mentions the following:
A palladium-catalyzed [2+2+1] annulation among 3-iodochromones, benzyl bromides, and norbornene has been developed. This annulation consists of a domino sequence involving Heck coupling/C(sp2)-H activation/C(sp3)-H activation, affording a variety of complex chromone derivatives I (R = H, 6-Me, 7-F, etc.; R1 = C6H5, 3-MeC6H4, 4-FC6H4, etc.) bearing five contiguous tertiary carbon centers in up to 94% yield and 99:1 dr. Interestingly, the diastereoselectivity could be switched by fine-tuning the solvent, in which endo isomer and exo isomer were obtained using mesitylene/CH3CN and mesitylene, resp.1-(Bromomethyl)-4-chlorobenzene(cas: 622-95-7COA of Formula: C7H6BrCl) was used in this study.
1-(Bromomethyl)-4-chlorobenzene(cas: 622-95-7) may be used to synthesize 1-(4-chlorobenzyl)-2-(pyrrolidin-1-yl-methyl)-1H-benzimidazole dihydrochloride.COA of Formula: C7H6BrCl It can be synthesized by reacting 4-chlorobenzyl alcohol with bromodimethylsulfonium bromide (BDMS) It can also be synthesized by refluxing a mixture of 4-chlorobenzaldehyde, chlorotrimethylsilane, 1,1,3,3-tetramethyldisiloxane and lithium bromide.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics