On May 7, 2021, Maurya, Mannar R.; Prakash, Ved; Avecilla, Fernando; Sankar, Muniappan published an article.Reference of 2,4-Di-tert-butylphenol The title of the article was Selective Bromination of β-Positions of Porphyrin by Self-Catalytic Behaviour of VOTPP: Facile Synthesis, Electrochemical Redox Properties and Catalytic Application. And the article contained the following:
Oxidovanadium(IV) complex of β-octabromo-meso-tetraphenylporphyrin, {[VIVO(TPPBr8)], 2} was synthesized by self-catalytic oxidative bromination of meso-tetraphenylporphyrinatooxidovanadium(IV) {[VIVO(TPP)], 1} in excellent yield under mild conditions at 25° and its structure was confirmed by single crystal x-ray study. UV-visible and 1H NMR spectra further confirmed that the meso-Ph rings are not brominated and thus emphasizes on the selectivity as well as synthetic importance of this catalytic method. In the presence of substrates e. g. phenol derivatives, 1 biomimics the vanadium bromoperoxidase (VBPO) enzyme and catalyzes the oxidative bromination of substrates in water at 25°. Remarkably, 2 also catalyzes the oxidative bromination of phenol derivatives under similar reaction conditions with very high turnover frequency (TOF) values (∼29 s-1) along with its recyclability. 2 Showed superior catalytic performance as compared to 1 because of its electron deficient nature due to electron withdrawing bromo substituents and robust saddle shaped nonplanar structure (further supported by DFT studies). The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Reference of 2,4-Di-tert-butylphenol
The Article related to vanadium phenylporphyrin bromination preparation crystal structure epr spectra electrochem, bromination phenol vanadium bromo phenylporphyrin catalyst, Inorganic Chemicals and Reactions: Coordination Compounds and other aspects.Reference of 2,4-Di-tert-butylphenol
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