65578-58-7Relevant articles and documents
Preparation method of silver-mediated N-arylhydrazine compound
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Paragraph 0044-0047, (2021/08/14)
The invention relates to a preparation method of an N-aryl hydrazide compound, which comprises the following steps: adding AgF, a reactant I, a reactant II, butanone and a magneton 5 into a reactor in sequence, connecting a condenser pipe, introducing condensate water from bottom to top, placing the reactor in an oil bath pan at 30-70 DEG C, heating, stirring and reacting for 10-12 hours, terminating the reaction, and purifying the product to obtain the N-aryl hydrazide compound. The method is mild in reaction condition, high in selectivity, relatively high in yield and environment-friendly; and the compound has certain biological activity and can be used in the field of synthesis of drugs, pesticides and paint dyes.
A search for blues brothers: X-ray crystallographic/spectroscopic characterization of the tetraarylbenzidine cation radical as a product of aging of solid magic blue
Talipov, Marat R.,Hossain, Mohammad M.,Boddeda, Anitha,Thakur, Khushabu,Rathore, Rajendra
supporting information, p. 2961 - 2968 (2016/03/12)
Magic blue (MB+? SbCl6- salt), i.e. tris-4-bromophenylamminium cation radical, is a routinely employed one-electron oxidant that slowly decomposes in the solid state upon storage to form so called 'blues brothers', which often complicate the quantitative analyses of the oxidation processes. Herein, we disclose the identity of the main 'blues brother' as the cation radical and dication of tetrakis-(4-bromophenyl)benzidine (TAB) by a combined DFT and experimental approach, including isolation of TAB+? SbCl6- and its X-ray crystallography characterization. The formation of TAB in aged magic blue samples occurs by a Scholl-type coupling of a pair of MB followed by a loss of molecular bromine. The recognition of this fact led us to the rational design and synthesis of tris(2-bromo-4-tert-butylphenyl)amine, referred to as 'blues cousin' (BC: Eox1 = 0.78 V vs. Fc/Fc+, λmax(BC+?) = 805 nm, εmax = 9930 cm-1 M-1), whose oxidative dimerization is significantly hampered by positioning the sterically demanding tert-butyl groups at the para-positions of the aryl rings. A ready two-step synthesis of BC from triphenylamine and the high stability of its cation radical (BC+?) promise that BC will serve as a ready replacement for MB and an oxidant of choice for mechanistic investigations of one-electron transfer processes in organic, inorganic, and organometallic transformations.
Amination of Arylboronic Compounds via the Copper-Catalyzed Addition of Arylboronic Esters to Azodicarboxylates
Uemura, Takeshi,Yamaguchi, Mao,Chatani, Naoto
, p. 3746 - 3750 (2015/11/28)
Arylboronic esters add to di-tert-butyl azodicarboxylate under mild reaction conditions (at room temperature) to afford aryl-substituted hydrazine derivatives in good yields. The reaction tolerates a wide variety of functional groups.
