Approximately 50% of synthetic catechol is consumed in theproduction of pesticides, the remainder being used as a precursorto fine chemicals such as perfumes and pharmaceuticals.It is a common building block in . Severalindustrially significant flavors and fragrances are preparedstarting from catechol. Guaiacol, 2-methoxyphenol, is prepared bymethylation of catechol and then converted to vanillin on a scaleof about 10M kg per year (1990). The related monoethyl ether ofcatechol, guethol, is converted to "ethylvanillin", a component ofchocolate confectionaries. 3-trans-isocamphylcyclohexanol(CAS#3407-42-9), widely used as a replacement for ,is prepared from catechol via guaiacol and . Piperonal (CAS#120-57-0), a floweryscent, is prepared from the methylene diether of catechol followedby condensation with glyoxal and decarboxylation.
Photo provided by Flickr
crookwellense (1993) Toxins derived from Fusarium sporotrichioides (1993) Trichlorfon () Trichloroacetic acid () (1995) Trichloroacetonitrile () (1991) 1,1,1-Trichloroethane () 1,1,2-Trichloroethane () (1991) Triethylene glycol diglydicyl ether () Trifluralin () (1991) 4,4´,6-Trimethylangelicin () plus ultraviolet radiation 2,4,5-Trimethylaniline () 2,4,6-Trimethylaniline () 4,5´,8-Trimethylpsoralen () 2,4,6-Trinitrotoluene () (1996) Triphenylene () Tris(aziridinyl)-p-benzoquinone (Triaziquone) () Tris(1-aziridinyl)phosphine oxide () 2,4,6-Tris(1-aziridinyl)-s-triazine () Tris(2-chloroethyl)phosphate () (1990) 1,2,3-Tris(chloromethoxy)propane () Tris(2-methyl-1-aziridinyl)phosphine oxide () Vat Yellow 4 () (1990) Vinblastine sulphate () Vincristine sulphate () Vinyl acetate () Vinyl chloride-vinyl acetate copolymers () Vinylidene chloride () Vinylidene chloride-vinyl chloride copolymers () Vinylidene fluoride () N-Vinyl-2-pyrrolidone () Vinyl toluene () (1994) Wollastonite () Xylene () (1989) 2,4-Xylidine () 2,5-Xylidine () Yellow AB () Yellow OB () Zectran () Zeolites () other than erionite (clinoptilolite, phillipsite, mordenite, non-fibrous Japanese zeolite, synthetic zeolites) (1997) Zineb () Ziram () (1991)Betel quid, without tobacco Bitumens (), steam-refined, cracking-residue and air-refined Crude oil () (1989) Diesel fuels, distillate (light) (1989) Fuel oils, distillate (light) (1989) Jet fuel (1989) Mate (1990) Mineral oils, highly refined Petroleum solvents (1989) Printing inks (1996) Tea (1991) Terpene polychlorinates (StrobaneR) ()Flat-glass and specialty glass (manufacture of) (1993) Hair colouring products (personal use of) (1993) Leather goods manufacture Leather tanning and processing Lumber and sawmill industries (including logging) Paint manufacture (occupational exposure in) (1989) Pulp and paper manufactureCaprolactam ()1 Chemical Abstract Number and year are given in parentheses: year in which the evaluation was published subsequent to the Supplement 7 Working Group for agents, mixtures or exposure circumstances considered in Volumes 43 to 61 of the Monographs.
COMT Gene - GeneCards | COMT Protein | COMT …
Photo provided by Flickr
A new process for hydroquinone and catechol synthesis based on the neat oxidation of benzene with recycling of the phenol as an intermediate product is suggested.