37721-75-8Relevant articles and documents
Facile synthesis of 2,3,5,6-tetrabromo-4-methyl-nitrocyclohexa-2,5-dien-1- one, a mild nitration reagent
Arnatt, Christopher K.,Zhang, Yan
scheme or table, p. 1592 - 1594 (2012/04/10)
Nitrocylcohexadienones have been applied as nitration reagents for mild, mono-nitrating reactions. The original synthesis of 2,3,5,6-tetrabromo-4-methyl- 4-nitrocylcohexa-2,5-dien-1-one appeared to be difficult to pursue due to both the solvent system and
POLYBROMINATED AROMATIC COMPOUNDS V. REACTION OF PENTABROMOTOLUENE WITH SODIUM METHOXIDE IN PYRIDINE
Shishkin, V. N.,Lapin, K. K.,Tanaseichuk, B. S.,Butin, K. P.
, p. 1882 - 1887 (2007/10/02)
During the reaction of pentabromotoluene with sodium methoxide in pyridine, together with the products from methoxydebromination and protodebromination, the products from substitution of both the bromine atom in the aromatic ring and hydrogen atom in the methyl group by methoxy groups are formed.The directing effect of the methyl and methoxymethyl groups during substitution of the bromine in the pentabromophenyl ring by the methoxide ion was studied, and it was shown that the directing selectivity of these substituents is low.The methyl group is predominantly a meta-orientant, whereas the methoxymethyl group is predominantly a para-orientant.
Bis- or poly-(bromo-4-methyl-phenoxy)-alkanes and -alkenes, process for preparing same and use thereof as uv-stable fireprotective agents for synthetic materials
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, (2008/06/13)
Disclosed are novel bis- or poly-(bromo-4-methylphen-oxy)-alkanes and -alkenes having the formula (1) wherein, n is an integer of from 1 to 6,m is 2 (n + z) - y,x is an integer of from 1 to 4,y is an integer of from 2 to 4 and, z is 0 or 1,and a process for preparing said compounds by reacting alkali salts of nucleus-brominated p-cresols with bis- or poly-haloalkanes or -alkenes, preferably in a glycol monoalkylether as reaction medium. The materials are employed as UV-stable low-migrating fire-protective agents for thermoplastic synthetic materials, and more specifically for polybutylene terephthalate or acrylo-nitrile-butadiene-copolymer molding compositions, in combination with antimony trioxide.