2-Furfuraldehyde

Chemical Designations - Synonyms 2-Fyraldehyde, Furfiirole, Fural, Pyromucic aldehyde, Furfuraldehyde, Quakeral Chemical Formula O-CHjCHjCHjCHCHO. 

Compute the energy difference between the anti (left) and syn forms of furfuraldehyde in a solution of dimethyl ether (e=12.0), using either the Onsager (MP2/6-31+G(d)) ortheSCIPCM (B3LYP/6-31+G(d)) SCRF models. The observed energy difference is -0.53 kcal-moT. ... 

Readlsotopes option 67, 129 frequencies 63, 65 imaginary 70 scaling 63 full Cl 266 fullerenes 31, 32, 54 functional 118 furfuraldehyde 247... 

Furfuraldehyde Enteromorpha, corncobs Convolvulinic acid Convolvulacea... 

General adsorption inhibitors form a physical barrier over the entire metal surface. Examples are diphenylamine and furfuraldehyde. 

Some starting materials can be unrecognisable even in quite small target molecules. The anti-spasmodic piperldolate (53) is clearly made from (54) which could come from cyclisation of (55), Reconnection of (55) shows that it can be made from furfuraldehyde (56). 

Condensation of 30 with 24 affords nifurdazil (35). In a modification of the usual scheme, condensation of 34 with furfuraldehyde gives the hydrazone 36. Nitration of that intermediate affords nifurimide (37).10... 

In a variation of the usual reaction conditions for oxidising furfuraldehyde to 2-furoic acid with hypochlorite, the aldehyde was added dropwise to a 10% excess of commercial sodium hypochlorite solution at 20-25°C, but without the inclusion of additional sodium hydroxide. When aldehyde addition was almost complete, a violent explosion occurred. Subsequent investigation showed that the pH of the reaction mixture fell progressively with addition of aldehyde, and at pH 8.5 the reaction mixture erupted violently, the temperature increased by 70°C and the pH fell to 2. Similar results were seen with benzaldehyde, but not with thiophene-2-aldehyde. 

A safe method of nitrating furfuraldehyde or its 0,0-diacetate to 5-nitrofurfural diacetate is described which minimises the formation of acetyl nitrate. 

Foresman et al.175 applied the DFT(B3LYP)/SCRF calculations to obtain the polar solvent effect on conformational equilibria in furfuraldehyde and on the C-C rotational barrier of (2-nitrovinyl)amine. The authors demonstrated that the poor results obtained using either spherical or ellipsoidal cavities can be significantly improved upon performing the SCRF calculations for the cavity of molecular shape. 

Freon-22, cl01 Freon-114, d271 2,5-Furandione, m2 2-Furanmethanol, f50 Furfural, f44 2-Furfuraldehyde, f44... 

This is used in manufacture of brake linings and is a polymer based on cashew nutshell liquid admixed with formaldehyde or furfuraldehyde and other ingredients. The polymerised resin mixture is cast into 8 cm thick slabs and then ground finely to produce the friction dust. Several fires have been experienced during bulk storage of the dust, attributed to autoxidation of the still partially unsaturated resin compound. Previously, linseed oil was used in place of the nutshell liquid, but fires were then more frequent. 

Thornton, J. D. and Garner, F. H. J. Appl. Chem. Suppl. 1 (1951) 61. Vapour-liquid equilibria in hydrocarbon-non-hydrocarbon systems. 1 The system benzene-cyclohexane-furfuraldehyde. 

Synonyms AI3-04466 Artificial ant oil Artificial oil of ants Bran oil BRN 0105755 Caswell No. 466 CCRIS 1044 EINECS 202-627-7 EPA pesticide chemical code 043301 FEMA No. 2489 Fural 2-Furaldehyde Furale 2-Furanaldehyde 2-Furancarbonal 2-Furancarboxal-dehyde Furfuraldehyde Furfurol Furfurole Furole a-Furole 2-Furylmethanal NCI-C56177 NSC 8821 Pyromucic aldehyde Quakeral RCRA waste number U125 UN 1199. 

The automated system based on these principles gives positive identification and quantification of furfuraldehyde in a complex matrix. It has been vigorously tested for reliability and performance. Clearly, the technique could be apphed to other problems. 

Converting furfuraldehyde into its 1,3-dithian-2-y] derivative by reacting it with propane-1,3-dithiol could also be the basis of a route to furoin. Once deprotonated. this forms an acyl anion equivalent that could be reacted with a second equivalent of the aldehyde and then protonated and deprotected to yield furoin ... 

Furan is synthesized by decarbonylation of furfural (furfuraldehyde), which itself can be prepared by acidic dehydration of the pentose sugars found in oat hulls, corncobs and rice hulls. 

FURFURAL Pyromucic Aldehyde, 2-Furaldehyde, Furfuraldehyde, Fural Combustible Liquid, III 2 2 0... 

Acetaldehyde, butylaldehyde, and furfuraldehyde are reported to replace formaldehyde for special purpose Novolak resins (7). However, the formaldehyde Novolak resins are reported to release formaldehyde as the major gaseous product upon heating at 450 °C (26). Formaldehyde is a well-known toxic compound and should be avoided if possible. Benzaldehyde has never been reported as a component for Novolak resins, but has been found to replace formaldehyde in Novolak resin preparations to yield fairly good resist materials. 

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