Bis diacetate

Ethanol, 2,2 -oxydi-. See Diethylene glycol Ethanol, 2-(2-phenoxyethoxy). See Diethylene glycol phenyl ether Ethanol, 2-phenoxy-, propanoate. See Phenoxyethyl propionate Ethanol, 1-phenyl-. See a-Methylbenzyl alcohol Ethanol, 2-phenyl-. See Phenethyl alcohol Ethanol, 2,2 -(1,4-phenylenebis (oxy)) bis-. See Hydroquinone bis (2-hydroxyethyl) ether Ethanol, 2,2 -(phenylimino)bis-, diacetate (ester). See N,N-Bisacetoxyethyl aniline... 

Schemes Preparation of bis(diacet)denic) gelator 25 (a) N-ethyl-N -dimeth)damino-propylcarbodiimide (EDCI), dry dichloromethane...

Bis(acetyloxy)-6a,9-difluoro-llb-hydroxy-16b-methylpregna-l,4-diene-3,20-dione. See Diflorasone diacetate. 

Cyano-17-hydroxyandrost-4-en-3-one, 135 20-Cy ano-21 -hydroxy-5/3-pregn-17(20) -ene-3,11-dione 21-raethyl ether, 224 10 -Cyano-19-norandrost-5-ene-3,17-dione bis-ethylene ketal, 278 10 -Cyano-19-norpregn-5-ene- 3/3,20/3-diol diacetate, 270... 

Trimethyltin chloride reacts with carboxylic acids at 100° to give the corresponding chloride carboxylates Me2Sn(Cl)OCOR (187, 188), and diethyltin dihydride, triethyltin hydride, hexaethylditin, and bis(triethyltin) oxide have been shown to react with lead tetraacetate to give diethyltin diacetate or triethyltin acetate, as appropriate (189). 

C23HJ2O, 1250-97-1) see Halopredone diacetate (liP)-21-(acetyloxy)-ll,17-dihydroxypregn-5-ene-3,20-di-one cyclic 3,20-bis(l,2-ethanediyl acetal)... 

C2i,H3 N507 62932-98-3) see Reproterol (3P,5a,llot)-3,ll-bis(acetyloxy)pregn-16-en-20-one (C25H3fj05 28507-80-4) see Halopredone diacetate 3/4-bis[4-(benzoyloxy)phenyl]-3,4-hexanediol (C32H30O6) see Dienestrol... 

C25H32O7 98632-54-3) see Triamcinolone (3p,5a,lla)-3,ll,17-trihydroxypregnan-20-one (C21H34O4) see Halopredone diacetate (lip)-ll,17,21-trihydroxypregn-4-ene-3,20-dione bis[(aminacarbonyl)hydrazonc]... 

The utility of thallium(III) salts as oxidants for nonaromatic unsaturated systems is a consequence of the thermal and solvolytic instability of mono-alkylthallium(III) compounds, which in turn is apparently dependent on two major factors, namely, the nature of the associated anion and the structure of the alkyl group. Compounds in which the anion is a good bidentate ligand are moderately stable, for example, alkylthallium dicar-boxylates 74, 75) or bis dithiocarbamates (76). Alkylthallium dihalides, on the other hand, are extremely unstable and generally decompose instantly. Methylthallium diacetate, for example, can readily be prepared by the exchange reaction shown in Eq. (11) it is reasonably stable in the solid state, but decomposes slowly in solution and rapidly on being heated [Eq. (23)]. Treatment with chloride ion results in the immediate formation of methyl chloride and thallium(I) chloride [Eq. (24)] (55). These facts can be accommodated on the basis that the dicarboxylates are dimeric while the... 

Initial polymer hydrolysis products are the diol or mixture of diols used in the reaction with the diketene acetal, and pentaerythritol dipropionate, or diacetate if 3,9-bis(methylene-2,4,8,10-tetraoxaspiro-[5,5Jundecane) was used. These pentaerythritol esters hydrolyze at a slower rate to pentaerythritol and the corresponding aliphatic acid (13). 

Also, desymmetrization of prochiral hydroxyalkylphosphine P-boranes was successfully performed using similar reagents and conditions. In the case of bis(hydroxymethyl)phenylphosphine P-borane 87, both its acetylation and hydrolysis of the diacetyl derivative 89 gave good results, although in addition to the expected monoacetate 88, the diol 87 and diacetate 89 were always present in the reaction mixture (Equation 42). °°... 

Immobilized PLE was applied to promote stereoselective acetylation of prochiral bis(hydroxymethyl)methyl-phenylgermane 106 (R = Me) with vinyl acetate as a solvent and acyl donor. Later on, the same group reported that each enantiomer of hydridogermane monoacetates 107 (R = H) was obtained either via acetylation of the bis-hydroxy derivative 106 (R = H) or hydrolysis of the corresponding diacetate 108 (R = H). In both methods, porcine pancreatic lipase was used and, obviously, each reaction led to a different enantiomer of 107 (Equation 51). ... 

Ar,A,-bis(2-hydroxybenzyl)-ethylenediamine-A,A, -diacetic acid (HBED) and IV-hydroxybenzyl-ethylenediam i ne- A-, A", N -iri acetic acid (HBET) are multidentate ligands investigated for coordination with gallium and indium (Figure l).78 HBED, with its two phenolate donor groups, led to increased stability constants over HBET. 

Several organohypervalent iodine reagents have been used for the oxidation of alcohols and phenols such as iodoxybenzene, o-iodoxybenzoic acid (IBX), bis(trifluoroa-cetoxy)iodobenzene (BTI), and Dess-Martin periodinane etc. But the use of inexpensive iodobenzene diacetate (IBD) as an oxidant, however, has not been fully exploited. Most of these reactions are conducted in high boiling DMSO or toxic acetonitrile media that results in increased burden on the environment. 

The di- x-tetrachloro-bis(ethylene)dipalladium complex rapidly reacts with alcohol (MeOH, EtOH, Me2CHOH, PhCH2OH) with formation of diacetal [247]. 

Manganese(II)-A/, A/r -dipyridoxylethylenediamine-A/r, AT-diacetate 5,5 -bis(phosphate) 75 (DPDP) is clinically used for enhancing contrast in the liver (detection of hepatocellular carcinomas) (312). Some dissociation of Mn(II) appears to occur in the liver, and enhancement can also be obtained in functional adrenal tissues (313). Manganese(II)-tetrasulfonated phthalocyanine also shows tumor localization properties and is a more efficient relaxation agent than the analogous Gd(III) complexes (314). 

Sodium hydrogen acetate (diacetate) Sodium hydrogen carbonate Sodium hydrogen (bi) sulphite... 

Wanzlick was the first to use an acetate salt in the synthesis of a mercury bis-NHC complex starting from mercury(ll) diacetate [Eq. (8)]." There are other examples using the very same strategy. Exchanging the anionic parts of the mercury precursor and the imidazolium salt, i.e., using HgCh and imidazolium acetate, works as well. ... 

Metal-catalyzed allylic substitution reactions have been a mainstay of synthetic chemistry because of their ability to proceed irreversibly and with high selectivity [42]. It is also feasible, however, to produce analogous systems that are completely reversible and nonselective, or ideally situated for use in DCC. These are essentially metal-catalyzed transesterification reactions, with the added feature of potentially providing stereochemical scrambling (and selection) as well as constitutional variation. An early example of this was provided in 2000 by Kaiser and Sanders [43]. In the absence of a template, reaction of diallyl diacetate 22 with a dicarboxylic acid in the presence of catalytic Pd(0) produced a negligible amount of the cycfized compound 23 (Fig. 1.9). However, when templated with 1,3-bis(4-pyridyl) benzene, yield of the cyclic structure increased to roughly 10%, independent of the dicarboxylic acid used. 

Bis(p-methoxyphenyl) tellurium diacetate or ditosylate is generated by the electrolysis of the parent telluride in the presence of BU4N+ acetate or tosylate. Like the telluroxide, they accomplish the conversion of thioamides into nitriles and 1,2,4-thiadiazoles. Taking into consideration of these facts, the above conversion can be performed in an electrochemical... 

Baryshnikov and co-workers used the same methodology for the synthesis of 5,5 -dinitro-4,4 -bis( 1,2,3-triazole) (133) (DNBT) from l,l,4,4-tetranitro-2,3-butanediol diacetate (132) in the presence of sodium azide. 

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