Organic benzophenone

CAS 131-56-6 EINECS/EEINCS 205-029-4 Synonyms Benzoresorcinol 4-Benzoyl resorcinol BP1 DHBP 2,4-Dihydroxybenzophenone (2,4-Dihydroxyphenyl) phenylmethanone Methanone, (2,4-dihydroxphenyl) phenyl-ClassiTicatbn Organic benzophenone deriv. 

CAS 131-57-7 EINECS/ELINCS 205-031-5 Synonyms 2-Hydroxy-4-methoxybenzophenone (2-Hydroxy-4-methoxy-phenyl) phenylmethanone Methanone (2-hydroxy-4-methoxyphenyl) phenyl- 4-Methoxy-2-hydroxybenzophenone Oxybenzone Classification Organic benzophenone deriv. 

CAS 131-54-4 EINECS/ELINCS 205-027-3 Synonyms Bis(2-hydroxy-4-methoxyphenyl) methanone 2,2 -Dihydroxy-4,4 -dimethoxybenzophenone Classification Organic benzophenone deriv. 

CAS 131-53-3 EINECS/ELINCS 205-026-8 Synonyms 2,2-Dihydroxy-4-methoxybenzophenone Dioxybenzone (2-Hydro) -4-methoxyphenyl) (2-hydroxyphenyO methanone Classification Organic benzophenone deriv. 

CAS 1843-05-6 EINECS/ELINCS 217-421-2 Synonyms Benzophenone, 2-hydroxy-4-(octyloxy)- 2-Hydroxy-4-n-octoxybenzophenone 2-Hydroxy-4-(octyloxy) benzophenone [2-Hy-droxy-4-(octyloxy) phenyl] phenylmethanone Methanone, [2-hydroxy-4-(octyloxy) phenyl] phenyl- Octabenzone Classification Organic benzophenone deriv. 

CAS 131-56-6 EINECS/ELINCS 205-029-4 Synonyms Benzoresorcinol 4-Benzoyl resorcinol BP1 DHBP 2,4-Dihydroxybenzophenone (2,4-Dihydroxyphenyl) phenylmethanone Methanone, (2,4-dihydroxphenyl) phenyl-Classification Organic benzophenone deriv. Empirical C13H10O3 Formula C6HsCOC6H3(OH)2 Properties Off-wh. to It. yel. cryst. solid sol. in ethanol, methanol, MEK, ethyl acetate insol. in water m.w. 214.23 m.p. 142 C b.p. 194 C (1 mm)... 

Classification Organic benzophenone deriv. Empincal C14H12O3... 

Synonyms Bis (2,4-dihydroxyphenyl) methanone and bis (2-hydroxy-4-methoxyphenyl) methanone Classification Organic benzophenone deriv. Definition Mixture of benzophenone-6 and -2 and other tetra-substituted benzophenone materials Uses UV absorber in NC lacquer, fluorescent paint, inks, and for protecting furniture woods, cosmetics, colored liq. toiletries, cleaning agents, isocyanate systems, and butyrate metal lacquers Manuf./Distrib. Celanese http //www. celanesechemicals. com http //www.chemvip.com EM Ind. 

Materials PP deep-groove fibers were obtained from Dr. Phil Brown, Department of Material Science and Engineering, Clemson University. Acrylamide (AAm, 98.5%) was obtained fi om Acros Organics. Benzophenone (BP), HPLC grade water, and anhydrous ethanol were obtained from Fisher Scientific. 

Poly(phenylquinoxaline—arnide—imides) are thermally stable up to 430°C and are soluble in polar organic solvents (17). Transparent films of these materials exhibit electrical insulating properties. Quinoxaline—imide copolymer films prepared by polycondensation of 6,6 -meth5lene bis(2-methyl-3,l-benzoxazine-4-one) and 3,3, 4,4 -benzophenone tetracarboxyUc dianhydride and 4,4 -oxydianiline exhibit good chemical etching properties (18). The polymers are soluble, but stable only up to 200—300°C. 

Benzophenone. Benzophenone [119-61-9] (diphenyl ketone) exists in a stable form as colorless orthorhombic bisphenoidal prisms when crystallized from alcohol or ether. Other labile forms of lower melting point exist. Benzophenone has been identified as a flavor component of wine grapes and has a geranium-like odor. It is soluble in most organic solvents, and is insoluble in water. 

A) 1-(2-Amino-5-chlorophenyll-1-(2-fluorophenyll-2-a2a-but-1-en-4-ol A mixture of 40 g of 2-methylimidazole hydrochloride and of 90 g of 2-amino-5-chloro-2 -fluoro-benzophenone in 240 ml of ethanolamine is heated at 135 for 2 hours. After cooling, the reaction mixture is poured into an aqueous sodium bicarbonate solution. The mixture is extracted with ether, the organic phase is washed repeatedly with water and is dried over sodium sulfate, and the solvent is evaporated to dryness. The residual oil is chromatographed on a silica column, elution being carried out with a 50/50 mixture of cyclohexane and ethyl acetate. 

These sunscreen ingredients include octyl-dimethyl-PABA (UVB), 2-ethylhexyl-p-meth-oxycinnamate (UVB),octocrylene (UVA/UVB), octyl salicylate (UVB), benzophenones (UVB/ UVA), and methyl anthranilate (UVA). Avoben-zone or Parsol 1789 and mexoryl, a benzylidene camphor, block UVA. Mexoryl is the most efficient of the UVA organic sunscreens [10]. Many sunscreen formulations combine ingredients to maximize photoprotection. 

Benzophenone-4-iodoacetamide is water-insoluble and should be pre-dissolved in DMF or another organic solvent prior to adding an aliquot to an aqueous reaction mixture. Stock solutions may be prepared and stored successfully if protected from light. 

Ketones - in sharp contrast to enols - are electron acceptors in a wide variety of organic transformations that occur at the carbonyl carbon. For example, the familiar dark-blue benzophenone anion radical is produced via one-electron reduction of benzophenone with sodium in anhydrous THF (equation 21). 

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