2.2- diphenyl-2-hydroxyethyl phenyl

Orthoesters. As model experiments (1) phenyl Cellosolve and tetraphenyl orthocarbonate, and (2) hydroxyethyl benzoate and tetra-phenyl orthocarbonate reacted at 275°C. Diphenyl carbonate was obtained from the latter reaction but not from the former. The facts that the distillate from the latter reaction contained ethylene oxide and that diphenyl carbonate was formed quantitatively from the reaction of carboxylic acid and tetraphenyl orthocarbonate suggest the following reaction mechanism ... 

It is interesting to note that 5-nitrobenzoxazole has two absorption maxima 224 (4.39) and 270 nm (3.84), while 6-nitrobenzoxazole shows only one maximum in area Amix 282 nm (4.01) [1200], A similar pattern is observed for 5-nitro- and 6-nitro-2-alkyl(aryl)benzoxazole too. The available experimental data are not enough to explain spectral differences of this kind. Apparently, it would be well to carry out quantum-chemical calculations or to involve other physical-chemical methods. An investigation of chromophoric 2-(4 -diphenyl)-5-nitrobenzoxazole with the help of UV (A 305 nm), fluorescence and laser spectroscopy has been reported by Chinese chemists [1201], Chromophores 2-(2 -hydroxy-4 -aminophenyl)-6-nitrobenzoxazole [ 1202], 2- [4-[4-(V,V-dihydroxyethyl-amino)-phenylazol]-phenyl -6-nitrobenzoxazole, 2-[4-(/V-mcthyl,V-hydroxyethyl-amino)... 

Ethanol, 2-[(1,7,7-trimethylbicyclo [2.2.1] hept-2-yl) oxy], exo-. See (exo)-2-Camphanyl-P-hydroxyethyl ether Ethanol, undenatured. See Alcohol Ethanone, 1-(2,3-dihydro-1,1,2,3,3,6-hexamethyl-1H-inden-5-yl)-. See Acetyl hexamethyl indan Ethanone, 2,2-dimethoxy-1,2-diphenyl-. See 2,2-Dimethoxy-2-phenylacetophenone Ethanone, 1-(4-(1,1-dimethylethyl)-2,6-dimethyl-3,5-dinitrophenyl)-. See Musk ketone Ethanone, 1-[4-(1,1-dimethylethyl) phenyl]-. See p-t-Butyl acetophenone Ethanone, 1-(4-ethylphenyl)-. See4-Ethylacetophenone... 

During the period under review these systems have been reported or postulated only as transient intermediates. The conversion of phenyl 2-hydroxyethyl sulphoxide into phenyl 2-chloroethyl sulphone on treatment with sulphuryl chloride proceeded via 2-phenyl-1,2-oxathietan 2-oxide as intermediate, and 1,2-oxathietan 2-oxides have been postulated as intermediates in the reactions of sulphur dioxide with olefins. 1,2-Oxathiet derivatives have also been proposed as reactive intermediates, and although the u.v. and i.r. properties of monothiobenzil are not consistent with its formulation as 3,4-diphenyl-l,2-oxathiet, its mass... 

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