N-dimethylformamide

Dimethyl-2,5-di(tei1-butyl peroxy) hexane, 56 Dimethyl ether, 56 n,n-Dimethylformamide, 57 1,1 -DimethyUiydrazine, 57 1,2-DimethyUiydrazine, 57... 

This exercise examines the effect of basis set on the computed equilibrium structure of N,N -Dimethylformamide. 

Current option 136, 214 density matrix 263 l,2-dichloro-l,2-difluoroethane 24 dichloroethane 239, 242 dielectric constant 239 diffuse functions 99 difluoroethylene 45 dihedral angles 290 valid range 288 n,n-dimethylformamide 105 dipole moment 20... 

In 1971, Batcho and Leimgruber introduced a new method for the synthesis of indoles. For example, condensation of o-nitrotoluene (5) with N,N-dimethylformamide dimethyl acetal (6) (DMFDMA) was followed by reduction of the rrans-P-dimethylamino-2-nitrostyrene (7) which resulted to provide the indole (8). ... 

Several types of substituted formamide acetals have been utilized in the Batcho-Leimgruber reaction, including N,N-dimethylformamide dimethyl and diethyl acetals, N-... 

The introduction of the cheap and commercially available N,N-dimethylformamide, instead of A-methylformanilide in the POCI3 catalyzed Vilsmeier formylation of thiophene, has made 2-thio-... 

The Heck reaction is considered to be the best method for carbon-carbon bond formation by substitution of an olefinic proton. In general, yields are good to very good. Sterically demanding substituents, however, may reduce the reactivity of the alkene. Polar solvents, such as methanol, acetonitrile, N,N-dimethylformamide or hexamethylphosphoric triamide, are often used. Reaction temperatures range from 50 to 160 °C. There are various other important palladium-catalyzed reactions known where organopalladium complexes are employed however, these reactions must not be confused with the Heck reaction. 

In an initial step the reactive formylating agent is formed from N,N-dimethylformamide (DMF) 2 and phosphorus oxychloride. Other N,N-disubstituted formamides have also found application for example A -methyl-A -phenylformamide is often used. The formylating agent is likely to be a chloromethyl iminium salt 4—also called the Vilsmeier complex (however its actual structure is not rigorously known)—that acts as the electrophile in an electrophilic substitution reaction with the aromatic substrate 1 (see also Friedel-Crafts acylation reaction) ... 

A mixture of 2.3 parts of 2-(4-methoxyphenyl)ethyl methanesulfonate, 4.9 parts of 1-[(4-fluorophenyOmethyl] -N-(4-piperidinyl)-1H-benzimidazol-2-amine dihydrobromide, 3.2 parts of sodium carbonate, 0.1 part of potassium iodide and 90 parts of N,N-dimethylformamide is stirred overnight at 70°C. The reaction mixture is poured onto water. The product is extracted with methylbenzene. The extract is washed with water,dried, filtered and evaporated. The residue is purified by column-chromatography over silica gel using a mixture of trichloro-methane and methanol (98 2 by volume) as eluent. The pure fractions are collected and the eluent is evaporated. The residue is crystallized from 2,2 -oxybispropane, yielding 2.2 parts (48%) of 1 -(4-fluorophenvlmethyl)-N-[1 - [2-(4-methoxvphenyl)ethvl] -4-piperidinyl] -1H-benzlmidazol-2-amine MP 149.1°C. 

Dimethy/su/famy/thioxanthene To a slurry of dry sodium thioxanthene-2-sulfonate (33.3 grams, 0.111 mol) in 50 ml of N,N-dimethylformamide was added thionyl chloride (14.3 grams, 0.122 mol) in divided portions. An exothermic reaction ensued with complete dissolution being effected in minutes. Treatment of the reaction mixture with crushed ice precipitated a gum which crystallized after a short period of stirring. The sulfonyl chloride was filtered, washed with water, and stirred with 100 ml of liquid dimethylamine. 

Li et al. [87,88] found that aniline will process the photopolymerization of AN either in N,N-dimethylformamide (DMF) solution or in bulk with a fair rate of polymerization only next to DMT. From UV spectra it is proved that aniline will form a CTC with AN. Using 313-nm radiation that CTC is excited to an exciplex and polymerization proceeds. N-methylaniline will polymerize AN similarly. The following mechanism was proposed ... 

Samal et al. [25] reported that Ce(IV) ion coupled with an amide, such as thioacetamide, succinamide, acetamide, and formamide, could initiate acrylonitrile (AN) polymerization in aqueous solution. Feng et al. [3] for the first time thoroughly investigated the structural effect of amide on AAM polymerization using Ce(IV) ion, ceric ammonium nitrate (CAN) as an initiator. They found that only acetanilide (AA) and formanilide (FA) promote the polymerization and remarkably enhance Rp. The others such as formamide, N,N-dimethylformamide (DMF), N-butylacetamide, and N-cyclohexylacetamide only slightly affect the rate of polymerization. This can be shown by the relative rate (/ r), i.e., the rate of AAM polymerization initiated with ceric ion-amide divided by the rate of polymerization initiated with ceric ion alone. Rr for CAN-anilide system is approximately 2.5, and the others range from 1.04-1.11. 

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