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Dimethyl-2- acetate

Acetals and Acylals. Acetals, which contain the group >C(OR)2, where R may be different, are named (1) as dialkoxy compounds or (2) by the name of the corresponding aldehyde or ketone followed by the name of the hydrocarbon radical(s) followed by the word acetal. For example, CH3—CH(0CH3)2 is named either (1) 1,1-dimethoxyethane or (2) acetaldehyde dimethyl acetal. [Pg.23]

Citral readily forms acetals by acid-catalyzed addition of alcohols or by the use of trialkoxyorthoformates. Citral dimethyl acetal [7549-37-3] is stable under alkaline conditions, whereas citral is not. Neryl and geranyl nitriles can be made by oximation of citral and dehydration of the intermediate oxime. For instance, geranonitrile [31983-27-4] is made as follows ... [Pg.424]

Amino-pyridazines and -pyridazinones react with monomethyl- or iV,A-dimethyl-formamide and other aliphatic amides in the presence of phosphorus trichloride, thionyl chloride, phosgene or benzenesuUonyl chloride to give mono- or di-alkylaminomethyl-eneamino derivatives. The same compounds can be prepared conveniently with A,iV-dimethylformamide dimethyl acetal in high yield (Scheme 50). [Pg.35]

N-Alkylations, especially of oxo-di- and tetra-hydro derivatives, e.g. (28)->(29), have been carried out readily using a variety of reagents such as (usual) alkyl halide/alkali, alkyl sulfate/alkali, alkyl halide, tosylate or sulfate/NaH, trialkyloxonium fluoroborate and other Meerwein-type reagents, alcohols/DCCI, diazoalkanes, alkyl carbonates, oxalates or malon-ates, oxosulfonium ylides, DMF dimethyl acetal, and triethyl orthoformate/AcjO. Also used have been alkyl halide/lithium diisopropylamide and in one case benzyl chloride on the thallium derivative. In neutral conditions 8-alkylation is observed and preparation of some 8-nucleosides has also been reported (78JOC828, 77JOC997, 72JOC3975, 72JOC3980). [Pg.206]

The only example of this type which is noteworthy is the in situ cyclization to (156) of the intermediate (155) from a 5-aminopyrimidine anil and DMF dimethyl acetal (80S479). [Pg.220]

Acid moieties include formic acid itself, formates and orthoesters, formamide, DMF dimethyl acetal and ethyl diethoxyacetate, acids, acid chlorides and anhydrides, the last including a rare [3,4-oxalate esters, 2-acyl or 2-ethoxycar-bonyl derivatives e.g. 180) are formed. [Pg.223]

Alkynic esters react with nitrile oxides in a pH dependent reaction to product isoxazolin-5-ones (Scheme 145) (71JCS(C)86). Alkynic ethers also react with benzonitrile oxide to produce an isoxazole-ether which on treatment with HCl or HBr gave an isoxazolinone (Scheme 145) (63CB1088,58MI41600). The reaction of benzonitrile oxide with dimethoxyketene yielded a dimethyl acetal which was split with acid into the isoxazolinone (Scheme 145) (59G15H). [Pg.104]

Granular catalyst resin loaded in corrugated sheet casings Dimethyl acetals of formaldehyde Zhang et al., Chinese Patent 1,065,412 (1992)... [Pg.1321]

M HCl, aq. THF, 50°, 6-8 h, 95% yield.An attempt to cleave the MOM group with acid in the presence of a dimethyl acetal resulted in the cleavage of both groups, probably by intramolecular assis-... [Pg.18]

Methods similar to those used to form and cleave dimethyl acetal and ketal derivatives can be used for other dialkyl acetals and ketals. [Pg.178]

MeOH, LaCl3, (MeO)3CH, 25°, 10 min, 80-100% yield/ Dimethyl acetals can be prepared efficlenlly under neutral conditions by catalysis with lanthanoid halides, but the results of the reaction with ketones are unpredictable. [Pg.179]

From a dimethyl acetal BCl3 Et20, —45°, CH3SH, 73% yield. ... [Pg.208]

Dimethyl Acetals and Ketals 3. Bis(2,2,2-trichloroethyl) Acetals and Ketals... [Pg.429]

The equilibrium constants for addition of alcohols to carbonyl compounds to give hemiacetals or hemiketals show the same response to structural features as the hydration reaction. Equilibrium constants for addition of metiianoHb acetaldehyde in both water and chloroform solution are near 0.8 A/ . The comparable value for addition of water is about 0.02 The overall equilibrium constant for formation of the dimethyl acetal of... [Pg.452]

The rates of both formation and hydrolysis of dimethyl acetals of -substituted benzaldehydes are substituent-dependent. Do you expect to increase or decrease with increasing electron-attracting capacity of the pam substituent Do you expect the Ahydroi to increase or decrease with the electron-attracting power of the substituent How do you expect K, the equilibrium constant for acetal formation, to vary with the nature of the substituent ... [Pg.506]

The dimethyl acetal (94) is readily prepared from the 22-aldehyde (93) by direct reaction with methanol in the presence of hydrogen chloride. Ena-mines (95) are formed without a catalyst even with the poorly reactive piperidine and morpholine.Enol acetates (96) are prepared by refluxing with acetic anhydride-sodium acetate or by exchange with isopropenyl acetate in pyridine.Reaction with acetic anhydride catalyzed by boron trifluoride-etherate or perchloric acid gives the aldehyde diacetate. [Pg.401]


See other pages where Dimethyl-2- acetate is mentioned: [Pg.537]    [Pg.178]    [Pg.201]    [Pg.328]    [Pg.349]    [Pg.8]    [Pg.744]    [Pg.222]    [Pg.499]    [Pg.524]    [Pg.85]    [Pg.94]    [Pg.231]    [Pg.126]    [Pg.290]    [Pg.591]    [Pg.178]    [Pg.198]    [Pg.208]    [Pg.429]    [Pg.145]    [Pg.61]    [Pg.81]    [Pg.95]    [Pg.102]    [Pg.160]    [Pg.210]    [Pg.211]    [Pg.245]    [Pg.248]    [Pg.86]   
See also in sourсe #XX -- [ Pg.98 ]




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0 Ketobutyraldehyde, dimethyl acetal

1.4- Dimethyl-1,2,4-triazolium iodide reaction with nickel acetate

1.4- Dimethyl-1,2,4-triazolium iodide reaction with palladium acetate

2,6-dimethyl-l,5-heptadien-3-ol acetate

2- Hexanone dimethyl acetal

2- Phenylpropionaldehyde Dimethyl Acetal

2- acetaldehyde dimethyl acetal

2-Propanone, 1 -bromo-3-chloro-, dimethyl acetal

2.4- Dimethyl phenyl acetic acid

3.7- Dimethyl-1.6-octadien-3-yl Acetate

3.7- Dimethyl-3-octyl acetate

3.7- Dimethyl-6-octen-l-yl Acetate

4-nitrobenzaldehyde dimethyl acetal

5,0-Acetals, activation, dimethyl

7- Hydroxy-3,7-dimethyl Octanal: Acetal

A methyl tetraacetyl-, dimethyl acetal

A-Bromoheptaldehyde dimethyl acetal

Acetal dimethylacetamide dimethyl

Acetal exchange with benzaldehyde dimethyl

Acetaldehyde dimethyl acetal, carbonylation

Acetaldehyde dimethyl acetal, carbonylation from methanol

Acetaldehyde dimethyl acetal: Ethane, 1,1-dimethoxy

Acetals 2.2- dimethyl propane 1,3 diol

Acetals formaldehyde dimethyl

Acetals from dimethyl tartrate

Acetone dimethyl acetal

Acetone dimethyl acetal, reaction with

Acrolein, dimethyl acetal

Aminoacetaldehyde dimethyl acetal

Arabinose dimethyl acetal

Benzaldehyde dimethyl acetal

Benzaldehyde dimethyl acetal, reaction with

Benzophenone dimethyl acetal

Bromoacetaldehyde dimethyl acetal

Cellulose with dimethyl sulfoxide-acetic anhydride

Citral dimethyl acetal

Cyclobutanone dimethyl acetals

Cyclobutanones dimethyl acetals

Cycloheptanone dimethyl acetals

Cyclohexanone dimethyl acetal

Cyclohexanones dimethyl acetals

Cyclopentanones dimethyl acetals

Cyclopropene dimethyl acetal

Cyclopropenone dimethyl acetal

D 3,6-anhydro-2,4,5-trimethyl-, and dimethyl acetal

D-Galactose dimethyl acetal

DMFDMA dimethyl acetal

Dimethyl acetal hydrolysis

Dimethyl acetal preparation

Dimethyl acetal, formation from

Dimethyl acetal, formation with

Dimethyl acetals

Dimethyl acetals selective reduction

Dimethyl acetals, synthesis

Dimethyl benzyl acetate

Dimethyl benzyl carbinyl acetate

Dimethyl sulfoxide-acetic anhydride

Dimethyl sulfoxide-acetic anhydride groups

Dimethyl thio acetal

Dimethylformamide, dimethyl acetal

Enol silanes reaction with dimethyl acetals

Ethyl dimethyl acetic acid

Furfural dimethyl acetal

Galactose 3,6-anhydro- -, dimethyl acetal

Galactose dimethyl acetal, hydrolysis

Galactose, hepta-O-acetyl-aWeAydo dimethyl acetal

Glucose dimethyl acetal

Glucose dimethyl acetal, crystalline

Heptanal dimethyl acetal

Hydratropaldehyde dimethyl acetal

Hydratropic Aldehyde Dimethyl Acetal

Hydroxycitronellal Dimethyl Acetal

Hydroxydihydrocitronellal dimethyl acetal

Japp-Klingemann reaction 3-Ketobutyraldehyde, dimethyl acetal

Ketalization under aprotic conditions benzaldehyde dimethyl acetal

Ketene dimethyl acetal

Methyl acetate synthesis from dimethyl ether

Methylenation dimethyl acetals

N-Pentadecanal dimethyl acetal

Naphthol 3,4-dimethyl-, acetate

O-Nitrophenylacetaldehyde dimethyl acetal

Octanal dimethyl acetal

Octosyl acid C dimethyl acetal

P-methoxybenzaldehyde dimethyl acetal

Phenylacetaldehyde dimethyl acetal

Propanal dimethyl acetal

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