O- PHENYL ESTER

Phenyl chlorothionoformate Formic acid, chlorothio-, O-phenyl ester (8) Carbonochloridothioic acid, O-phenyl ester (9) (1005-56-7)... 

Phenylquecksilber-dithiocarboxylate verhalten sich gegenuber nucleophilen Verbindungen als Thioacylierungsmittel. Mit Natriumphenolat entstehen Thiocarbonsaure-O-phenyl-ester, mit Natrium-methanolat 0-MethylesterB2. 

Figure 5 Relationship between Katrp and structure of alkyl halide initiators, measured with Cu X/fPMA (X=Cl or Br) as catalyst with MeCN as solvent at 22 °C 3° red, 2° blue, 1° black R-Br solid, R-CI open, R bottom-half solid Amide , Phenyl , Ester , Nitrile o. Phenyl-ester 0, Allyl . Reprinted from Tang, W. Kwak, Y. Braunecker, W. etal. J. Am. Chem. Soc. 2008, 130,10702-10713, " with permission from the ACS.

Scheme 3 ATRP activation rate constants for various initiators with Cu X/PMDETA (where X=Br or Cl) in MeCN at 35°C. 3° initiators are in red 2° blue 1° black with isothiocyanate/ thiocyanate half-filled triangle chloride open symbols bromide filled symbols iodide half-filled square, amide T benzyl A ester nitrile O phenyl ester . Reprinted with permission from Tang and Matyjaszewski [27]...

The glycidic esters are of interest primarily because upon hydrolysis aud decarboxylation they aflFord aldehydes (if ClCHjCOOEt is used) or ketones (if substituted chloroacetic esters- ClCHRCOOEt are employed) having a higher carbon content than the original aldehyde or ketone. Thus (I) gives o-phenyl-propionaldehyde or hydratropaldehyde (II) ... 

Some authors use O] instead of cr as the substituent constant in such correlations.) An example is provided by the aminolysis of phenyl esters in dioxane the substrates RCOOPh were reacted with -butylamine, and the observed first-order rate constants were related to amine concentration by = k2 [amine] kj [amine]. The rate constants kz and k could be correlated by means of Eq. (7-54), the reaction constants being p = +2.14, b = + 1.03 (for A 2) and p = -1-3.03,8 = -1-1.08 (for ks). Thus, the two reactions are about equally sensitive to steric effects, whereas the amine-catalyzed reaction is more susceptible to electronic effects than is the uncatalyzed reaction. 

The 2-phenyl-2-ethyl-pentane-1,5-diacid-mononitrile-(1) of melting point 72° to 76°C, used as starting material in this process, can be produced for example from o-phenyl-butyric acid nitrile by condensation with acrylic acid methyl ester and subsequent hydrolysis of the thus-obtained 2-phenyl-2-ethyl-pentane-1,5-diacid-monomethyl ester-mononltrile-(l) of boiling point 176° to 185°C under 12 mm pressure. 

Chemical Name o -phenyl-2-piperidineacetic acid methyl ester... 

A. Pentoses.—t-Ascorbic acid 2- and 3-phosphates, together with their phosphate esters, give a characteristic colour with ferric chloride and this colour reaction has been used in a study of the hydrolysis of L-ascorbic acid 3-phosphate (58). The acid-catalysed, pseudo-firsi-order hydrolysis proceeds with P—O bond fission, as does the bromine oxidation of its phenyl ester. Both of these observations can be rationalized if (58) is... 

Butane, 1,4-diiodo-, 30, 33 2-Butanone, 3-acetamido-, 33,1 n-BuTYLACETYLENE, 30, IS tert-Butyl alcohol, 30, 19, 20 32, 20 ierl-Butylbenzene, 32, 91 n-Butyl bromide, 30, 16 tert-Butyl hypochlorite, 32, 20 n-Butyl iodide, 30, 34 Butylketene dimer, 31, 71 -ter -Butylphenyl salicylate, 32, 26 Butyrchloral, 33, IS Butyric acid, a, y-dicyano-o-phenyl-, ethyl ester, 30, 80... 

In summary, reactions of nitronates with acid anhydrides or acyl chlorides give the O-acylated products, and reactions with acyl imidazoles, phenyl esters, acyl nitriles, and enol-lactones gives the C-acylated products, (see Eq. 5.13).25 The C/O selectivity of nitronate acylation by RCOX is qualitatively correlated with strength (pKJ of the acid HX conjugated to the leaving group X .25... 

Chemical names Phosphorothioic acid 0-[4-[(dimethylamino) sulfonyl], phenyl] 0,0-dimethyl ester Phosphorothioic acid, 0,0-dimethyl-, O-ester with p-hydroxy-/V,/V-dimethylbenzene sulfonamide Phosphorothioic acid, 0,0-dimethyl O-p-(dimethylsulfamoyl) phenyl ester O-Dimethyl hydrogen phosphorothioate, O-ester with p-hydroxy-/V,/V-dimethylbenzenesulfonamide 0-[4-1 (Dimethylamino) sulfonyl] phenyl phosphorothioic acid O.O-dimethyl ester O,O-Dimethyl O, p-(N,N-dimethylsulfamoyl) phenyl phosphorothioate O, p-(Dimethylsulfamoyl) phenyl O.O-dimethyl phosphorothioate p-(Dimethylsulfamoyl)phenyl dimethyl phosphorothioate O.O-dimethyl 0-[p-(dimethylsulfamoyl)-phenyl] phosphorothioate Dimethyl p-(dimethylsulfamoyl) phenyl phosphorothionate O.O-dimethyl-O, p-(dimethylsulfamoyl) phenyl phosphorothionate... 

Fries rearrangement.1 Rearrangement of phenyl esters with Lewis acids results in a mixture of ortho- and para-phenolic ketones. In contrast, reaction of an o-bromophenyl ester with sec-butyllithium results in exclusive formation of the orf/jo-phenolic ketone by an intramolecular acyl rearrangement.2... 

SJ-Phenyl aziridinethioates 15 have been successfully transformed into their ce-lithio derivatives and further alkylated to give 16 in satisfactory yield68,69. Under the same conditions the corresponding O-alkyl ester decomposed. 

In the spectra of vinyl or phenyl esters, with unsaturation adjacent to the C—O— group, a marked rise in the carbonyl frequency is observed along with a lowering of the C—O frequency. Vinyl acetate has a carbonyl band at 1776 cm-1 phenyl acetate absorbs at 1770 cm-1. 

The majority of preservatives are bacteriostatic rather than bacteriocidal, and consist of both acid and nonacid types. Among the acidic types are phenol, chloro-cresol, O-phenyl phenol, alkyl esters of parahydroxybenzoic acid, benzoic acid, boric acid, and sorbic acid, and their respective salts. Therefore, the pH of solution, and the pAa of the preservative need to be carefully evaluated prior to selecting a preservative for a formulation. Neutral preservatives include chlorobutanol, benzyl alcohol, and beta-phenylethyl alcohol. Under alkaline conditions, it is generally regarded that most microbial growth is significantly retarded at these pH values, which reduces the need for a preservative. 

Poly(arylene ether benzoxazole)s were also synthesized from the reaction of bis[(4-hydroxyphenyl)benzoxazole]s and activated aromatic difluoro monomers as shown in Eq. (7) [28,29]. The bis[(4-hydroxyphenyl)benzoxazole]s were readily prepared by condensation of the appropriate bis(o-aminophenol) (e.g. 3,3 -dihydroxy-4,4 -diaminobiphenyl) with phenyl-4-hydroxybenzoate in diphenyl sulfone at 260°C. Under proper conditions, the less expensive 4-hydroxybenzoic acid can be used in place of the phenyl ester to provide high yields of the desired bis[(4-hydroxyphenyl)benzoxazole]s. As presented in Table 9, the hexafluoroisopropylidene (6F) containing polymers were amorphous. These polymers were prepared in DMAc. However, the polymers derived from 6,6 -bis[2-(4-hydroxyphenyl)benzoxazole] were prepared in diphenyl sul-... 

The p-nitro phenyl ester of N-carbobenzoxylysine reacts with water according to the following equation (B and P are just symbols used to simplify description of this compound H and O represent hydrogen and oxygen). 

Benzohydroxamic acid dioxouranium complexes, 507 metal complexes, 506, 507 as metal precipitant, 506 Benzohydroxamic acid, iV-methyl-metal complexes, 506 Benzohydroxamic acid, N-phenyl-metal complexes, 507 reactions with carboxylic acids, 507 as metal precipitant, 506 titanium complexes, 506 Benzohydroxamic acid, A -(o-tolyl)-as metal precipitant, 506 Benzohydroxamic acid, N-wi-tolyl-p-methoxy-metal complexes, 506 Benzoic acid, dihydroxy-beryllium(II) complexes, 481 Benzoic acid, o-mercapto-esters... 

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