Solid and solution state flexibility of sterically congested bis(imino)bipyridine complexes of zinc(II) and nickel(II) was written by Griffith, Gerry A.;Al-Khatib, Mohamed J.;Patel, Kalpana;Singh, Kuldip;Solan, Gregory A.. And the article was included in Dalton Transactions in 2009.Application In Synthesis of 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine This article mentions the following:
Two new sterically demanding bis(imino)bipyridine ligands, 6,6′-{(2,6-i-Pr2C6H3)N:CR}2C10H6N2 (R = H (L1), Me (L2)), were prepared in high yield by the condensation reaction of 2,6-diisopropylaniline with 6,6′-(O:CR)2C10H6N2 (R = H, Me). Pd(0)-mediated cross coupling of 2-(Bu3Sn)-6-{C(Me)OCH2CH2O}C5H3N with 2-Br-6-{C(Me)OCH2CH2O}C5H3N, followed by an acid-mediated deprotection, was employed as an efficient route to the precursor 6,6′-bis(acetyl)-2,2′-bipyridine. Reaction of aldimino L1 with two equiv of MX2 [MX2 = ZnCl2, NiCl2 or (DME)NiBr2] in n-BuOH at elevated temperature gives the five-coordinate mononuclear complexes [(L1)MX2] (M = Zn, X = Cl 1; M = Ni, X = Cl 2a; M = Ni, X = Br 2b) as the sole products, in which one imine group is bound and the other uncoordinated (endo-exo ). In the case of diamagnetic 1, VT 1H NMR spectroscopy reveals a fast exchange process operating between the two possible forms of the endo-exo isomer which probably proceeds via an exo-exo intermediate (ΔH ‡interconversion = 35.6 ± 1.5 kJ mol-1, ΔG ‡298 = 47.4 ± 3.3 kJ mol-1). In contrast, treatment of ketimino L2 with MCl2 (MCl2 = ZnCl2 or NiCl2) affords bimetallic [(L2)Zn2 Cl4] (4) and the six-coordinate monometallic species [(L2)NiCl2] (5), resp.; in 4, L2 adopts a bis(bidentate) bonding mode (endo-endo) while in 5 it acts as tetradentate ligand (endo-endo ). Prolonged standing of 1 in chlorinated solvents results in partial hydrolysis and the formation of the 6-imino-6′-formyl-2,2′-bipyridine Zn complex, [(6-{(2,6-i-Pr2C6H3)N:CMe}-6′-(CH:O)C10H6N2)ZnCl2 ] (3) (endo-imine, exo-formyl). Single crystal x-ray structures are reported for L1, 1, 2a, 3, 4 and 5. In the experiment, the researchers used many compounds, for example, 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9Application In Synthesis of 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine).
2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Application In Synthesis of 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts