The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Safety of 4-Chloro-2-nitroaniline, 89-63-4, Name is 4-Chloro-2-nitroaniline, SMILES is NC1=CC=C(Cl)C=C1[N+]([O-])=O, in an article , author is Gou, Gao-Zhang, once mentioned of 89-63-4.
Synthesis, spectroscopic properties and theoretical calculations on methylene bridged 1,8-naphthyridine ligands and copper(I) complex through a non-catalyst C(sp(3))-H methylenation
Two 1,8-naphthyridine derivatives containing methylene, N-(5-methyl-7((1,3-oxo-1,3-dihydroisobenzofuran-1-yl)methyl)-1,8-naphthyridin-2-yl)acetamide (L1) and 2-amino-3((7-amino-4-methy1-1,8-naphthyridin-2-yl)methyl)isoindolin-1-one (L2), as well as a copper(I) complex CuI(L1)(2) (C1) have been synthesized through a non-catalyst C(sp(3))-H methylenation process and characterized. The structure of C1 has been determined by X-ray diffraction analysis. The spectroscopic properties have been investigated by experimental as well as theoretical studies for all these compounds. The two ligands exhibit similar electronic absorption spectra with lambda(max) at about 340 nm, which can be tentatively assigned to pi(naph)->pi(naph)* transition. The electronic absorption spectra of C1 exhibits at similar to 335 nm except in n-hexane, which may be assigned tentatively to the intraligand charge transfer transition. The assignment is further supported by density functional theory calculations and cyclic voltammetry.
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Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem