Acetone compounds

Insertions of isocyanide into niobium-carbon bonds follow a path similar to that with vanadium, resulting in the formation of the 7]2-iminoacyl complexes, which can then be involved in further chemistry.175 176 The reaction of acetone with cyclopentadienyl complex 110 under a carbon monoxide atmosphere gives the if -acetone compound 111. Complex 111 subsequently undergoes either stepwise insertion of two isocyanides via 112 or double insertion of the isocyanide to give complex 113 (Scheme 48).177... 

On prolonged standing or heating in acetone compound (94) is formed, which probably is a result of fragmentation of (93) into acetone, sulfur and carbodiimide (PhN=CA=NMe) followed by addition of the carbodiimide to (93) with elimination of acetone. 

Hexamethy 1-1,2,4,5-1,2,4,5-tetroxo-nane. See Acetone Compounds under 2,5-Bis(hydroperoxy)-2,5-dimethyl-hexene in Vol 2, p B144-R... 

Dimethyl-7l8,l5,16,18,19-hexaoxadi-spiro-[5.2.5.5]-nonadecane. A CA name for compd described in Vol 2 of Encycl, p B144-R, as Acetone Compound of 1,1 -Bis(hydroperoxycyclohexyl)-peroxide... 

Acetone Compound, Ca4Ha aNl 06, (No structural formula given), mw 658.56, N38.29%,... 

Its Acetone Compound ceMed 3,3,6,6,9,9-Hexa-methyl-1,2,4,5-tetroxonane in CA 5th Decennial Formula Index),(CH3)2C-CH2.CH2------C(CH3)2 ... 

Acetone Compound, C,, H, N,806, (No structural formula given), raw 658.56, N38.29%, bright yel ifts. Was prepd by pouring acet into ice cold nitric acid (d 1.5), cooling and adding to the resulting oil an exce ss of ammonia. Its trinitro derivative, C, 4HtSNJ(On, ... 

Paraldehyde. See under Acetaldehyde A14-R Paraldol. See under Acetaldol A15-R Pentaerythritol Acetone.Compounds. See Acetone, Compounds of Pentaerythritol A40-L... 

Benzoyl nitrene 247 (R = Ph) generated by photolysis of benzoyl azide in the presence of carbonyl compounds affords 1,4,2-dioxazolines 248-251 (Scheme 34). Moderate yields are obtained upon irradiation at 254 nm, while better yields are obtained upon irradiation at 365 nm in the presence of a sensitizer, such as Michler s ketone, which diminishes the photo-Curtius side reaction of acylnitrene to isocyanate. With ethoxycarbonylnitrene 247 (R=—OEt) and acetone, compounds 251 and 252 are obtained the latter is possibly formed from acetone and the dipolar intermediate 252 <1995T7181>. In another report on reactions of chiral aroylnitrene 254, the obtained dioxazolines 255 do not show any diastereoselectivity, although the presence of a chiral auxiliary in the ortfe-position ensures its vicinity to the reaction center (Scheme 35) <2001S1125>. 

A ruthenium hydride fluoride, [RuHF(CO)L2] (L = P Bu2Me) has also figured in new chemistry of CF2 as a ligand [54], The complex was prepared by reaction of [RuHCl(CO)L2] and anhydrous CsF in acetone. Compounds of the same general formula have also been used in detailed studies on reactivity and stereochemistry of ligands attached to ruthenium centres. Thus, the relative electron-donating ability... 

Acetone Compounds of Pentaerythritol are described by L.Orthner,Ber 61B,116-18(1928). None of diem is an explosive... 

While the wine contains several g/L of L-malic acid before MLR, it usually only contains between 200 mg/L and 300 mg/L of citric acid. Although the citric acid is only present in low concentrations, it is of considerable importance. On the one hand, its metabolic pathway leads to production of acetic acid, in other words, it increases the volatile acidity of the wine. However, the most important enological significance associated with fermentation of citrate is the production of diacetyl and other acetonic compounds, which affect the wine aroma. 

Aeeto >henone yields a precipitate when added to an aqueous solution contai ning mercuric cyanide and sodium liydroxide. It is a pale yellowy insoluble jxpwder, which retains about 3 per cent, of water when dried in air. Like tiie acetone compound, it is decomposed by ix>tassium cvariide or hydrochloric acid. Its constitution mav be expressed as 3 C,Hs.CO,CH-Hg), HgC Ng or... 

Since decarboxylation of compound B yields acetone, compound B must be acetoacetic acid. This is because 3 keto acids decarboxylate upon heating ... 

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