An Improved Preparation of Arylboronates: Application in One-Pot Suzuki Biaryl Synthesis was written by Zhu, Lei;Duquette, Jason;Zhang, Mingbao. And the article was included in Journal of Organic Chemistry in 2003.HPLC of Formula: 525362-07-6 This article mentions the following:
The Miyaura arylboronate synthesis was modified by substituting a ligandless palladium catalyst for PdCl2(dppf). Palladium acetate, free of ligand, was highly effective for these coupling reactions. This modified procedure is advantageous over the original Miyaura synthesis in ease of workup, catalyst removal, and low catalyst cost. Furthermore, the boronates formed in this manner can be used directly for Suzuki coupling reactions in a one-pot fashion. The biaryl products have improved impurity profiles and reduced heavy metal contamination. Thus, 4-BrC6H4COMe and bis(pinacolato)diboron reacted in DMF containing Pd(OAc)2 and KOAc for 2-3 h at 80° and the cooled reaction mixture treated with 4-BrC6H4NO2 in the presence of cesium carbonate and Pd(PPh3)4 at 80° overnight to give 1-(4′-nitrobiphenyl-4-yl)ethanone in >99% yield and >95% purity. In the experiment, the researchers used many compounds, for example, Methyl 2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (cas: 525362-07-6HPLC of Formula: 525362-07-6).
Methyl 2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (cas: 525362-07-6) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.HPLC of Formula: 525362-07-6
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics