3.5- Dichloro-2 hydroxybenzoic acid

C7H4BrNOS 6-bromo-2-benzothiazolinone 62266-82-4 25.00 1 7496 2 9753 C7H4CI203 3,5-dichloro-4-hydroxybenzoic acid 3336-41-2 25.00 1.5059 2... [Pg.227]

C. 2,6-Dichlorophenol. A mixture of 250 g. (1.2 moles) of dry 3,5-dichloro-4-hydroxybenzoic acid and 575 g. (600 ml., 4.8 moles) of redistilled dimethylaniline is placed in a 2-1. round-bottomed flask provided with a thermometer and a short aircooled condenser and is heated slowly in an oil bath. Evolution of gas commences at 130° and is vigorous at 150°. The solution is heated at 190-200° for 2 hours or until the evolution of gas has ceased. After cooling, the solution is poured by portions into 600 ml. of concentrated hydrochloric add in a 3-1. separatory funnel, with cooling from litne to lime by holding the funnel under a stream of cokl water. When the solution is... [Pg.36]

Dichlorophenol has been prepared by the chlorination of phenol with chlorine gas in the presence of nitrobenzene and fuming sulfuric acid, by the decomposition of the diazotate of 2,6 dichloro-4-aminophenol, eind by the decarboxylation of 3,5-dichloro-4-hydroxybenzoic acid in quinoline or dimethyl-aniline. ... [Pg.38]

Decarboxylation. Tarbell et al. decarboxylated 3,5-dichloro-4-hydroxybenzoic acid by brief heating of a solution in dimethylaniline. [Pg.871]

On the other hand, 4-hydroxybenzoic acid and syringic acid give infusible polymers exhibiting high temperature transitions at 330 and 320 °C, respectively. The polymer obtained from 3,5-dichloro-4-hydroxybenzoic acid exhibits neither a melting point nor a transition below 400 °C. [Pg.24]

Dichlorophenol Ethyl />-hydroxybenzoate with, e.g., S02C12 (2.2 moles) in 1.5 h on the water-bath affords a yield of about 85 % of ethyl 3,5-dichloro-4-hydroxybenzoate, which is hydrolysed by methanolic potassium hydroxide to 3,5-dichloro-4-hydroxybenzoic acid. This acid (1.2 moles) in dimethylaniline (575 g) is heated gradually to 190-200° and kept at this temperature until evolution of C02 ceases (about 2 h), giving 80-90% of 2,6-dichloro-phenol. For details see Organic Syntheses 451... [Pg.162]

Preparation by action of 3,5-dichloro-4-hydroxybenzoic acid on pyrogallol with boron trifluoride or its complexes [420]. [Pg.489]

C8H6CI2N203 3,4-dichloro-N-nitrosocarbanilic acid methyl 100836-84-8 409.15 35.228 1,2 12938 C8H604 3-formyl-4-hydroxybenzoic acid 584-87-2 727.67 66.136 2... [Pg.463]

Cyasorb UV 2337. See 2-(2 -Hydroxy-3,5 -di-t-amylphenyl) benzotriazole Cyasorb UV 2908. See 3,5-Di-t-butyl-4-hydroxybenzoic acid, n-hexadecyl ester Cyasorb UV3346 LD] Cyasorb UV3346. See N,N -Bis (2,2,6,6-tetramethyl-4-piperidinyl)-1,6-hexanediamine polymer with 2,4-dichloro-6-(4-, morpholinyl)-1,3,5,-triazine Cyasorb UV-3529. See 1,6-Hexanediamine,... [Pg.1111]

Dichloro-2-hydroxybenzoic acid (C H OgCl2) 2-Hydroxyphenylpropenoic acid (o-coumaric acid) (C HgOg)... [Pg.360]

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