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Formaldehyde s. a. Amino

Fluoroamines s. Difluoroamines Fluorocarbon nitrogen compounds s. Carboxylic acid bis(trifluoro-methyl)amides Fluorophosphites 19, 589 Formaldehyde (s. a. Amino-, Halogeno-, Hydroxy-methylation)... [Pg.231]

Condensation of 2-amino-5-aryl-5//-thiazolo[4,3-6][I,2,4]oxadiazoles (93 X = 0) and -thia-diazoles (93 X = S) with formaldehyde and a-amino acids leads to 7-aryl-3-(carboxy-alkyl)thiazolo[3, 4 3,2][I,3,4]oxadiazoles (94 X = 0) and -thiadiazoles (94 X = S), respectively. Under the same reaction conditions 5-aryl-2-sulfonyl-l,5-dihydrothiazolo[3,4-Z)][l,2,4]triazoles (95) are converted into 7-aryl-3-(carboxyalkyl)thiazolo[3, 4 2,3][l,2,4]triazoles (96) (Equation (9)) <94MI 805-01 >. [Pg.141]

The iminium salt 132, generated from benzylamine hydrochloride and aqueous formaldehyde, reacts with cyclopentadiene during 3 h at room temperature to give, after basification, the cycloadduct 133 in nearly quantitative yield (equation 70). Other examples of this reaction are shown in equations 71-75. The separable diastereomers 134 and 135 are formed in the ratio 4 1 from cyclopentadiene, (—)-a-methylbenzylamine hydrochloride and aqueous formaldehyde in a combined yield of 86% (equation 75)62. Hydrochlorides 136 of methyl esters of natural amino acids [(S )-valine, (S )-isoleucine] react with cyclopentadiene and formaldehyde in aqueous THF to produce mixtures of the diastereomers 137 and 138, in which the former predominate (equation 76)63. [Pg.506]

Uses. About 35-40% of the methanol made is converted to formaldehyde. That s not because the embalming business is so good. Formaldehyde is a feedstock for amino and phenolic resins, which are used as adhesives in plywood, and in the automotive and appliance industry to make parts (all the agitators in washing machines used to be made out of phenolic resins). It is used as feedstock for hexamethylene tetramine, used in electronic plastics for pentaerythritol, used for making enamel coatings and for floor polish and inks for butanediol, a chemical intermediate and for acetic acid, which is widely used itself as a feedstock and solvent and warrants its own treatrnent later on. In the textile business, formaldehyde is used to make fire retardants, mildew resistant linens, and permanent press clothing. [Pg.180]

Many chiral dihydrooxazoles and oxazolidines are derived from amino alcohols, such as valinol (Section 2.3.1.). Thus, (5>)-4-isopropyIoxazolidine (15) was obtained from (S)-valinol by reaction with formaldehyde 7 and used for the formation of chiral amides in [2,3] sigmatropic rearrangements (Section D.1.6.3.2.). A bicyclic derivative of valinol 16 was obtained by reaction with 4-oxopentanoic acid8 and used as a chiral dienophile (Section D.1.6.1.1.2.1.2.). A detailed procedure for an analogous derivative from (S,S)-2-amino-l-phenyl-1.3-propanediol has been published9. [Pg.65]

Treatment of rifamycin S with formaldehyde and secondary amines yields the 3-aminomethyl derivatives (38, X = CH2NR2) which are not of therapeutic interest (125). However, upon oxidation in acidic medium, the aminomethyl derivatives yield 3-formylrifamycin SV, also known as rifaldehyde [13292-22-3] (38, X = CHO), C3gH47N023. Treatment of rifaldehyde with amines, hydrazines, hydroxylamines, and hydrazides yields a number of derivatives of the 3-fomiyl group having exceUent biological activity (109,126—128). The most therapeuticaUy usehjl derivative is the A/-amino-iV-methylpiperazine hydrazone of rifaldehyde known as rifampin in the United States and rifampicin elsewhere. [Pg.498]

Aminoplasts n. Thermosetting resins made by the polycondensation of formaldehyde with a nitrogen compound and a higher aliphatic alcohol. The two general types are urea-formaldehyde and triazine-formaldehyde. Melamine is the triazine most often used. See also amino resin. G Aminoplaste mpl, F aminoplastes mpl, S aminoplasticos mpl, I amminoplasti mpl ... [Pg.49]

Aq. 40%-formaldehyde and 38%-NaHS03 soln. mixed and heated 0.5 hr. at 95°, 2-amino-4-methylpyridine in aq. 50%-alcohol added, refluxed 2.5 hrs. with stirring, cooled, aq. NaCN added slowly, and refluxed 20 hrs. with stirring N-(4-methyl-2-pyridyl)aminoacetonitrile. Y 88.8%. F. e. s. A. Lawson and D. H. Miles, Soc. 1959, 2865. [Pg.454]


See other pages where Formaldehyde s. a. Amino is mentioned: [Pg.280]    [Pg.306]    [Pg.243]    [Pg.280]    [Pg.306]    [Pg.243]    [Pg.108]    [Pg.302]    [Pg.511]    [Pg.462]    [Pg.294]    [Pg.303]    [Pg.207]    [Pg.33]    [Pg.286]    [Pg.416]    [Pg.511]    [Pg.140]    [Pg.367]    [Pg.56]    [Pg.15]    [Pg.294]    [Pg.303]    [Pg.408]    [Pg.557]    [Pg.1820]    [Pg.775]    [Pg.113]    [Pg.104]    [Pg.775]    [Pg.543]    [Pg.92]    [Pg.187]    [Pg.96]    [Pg.114]    [Pg.222]    [Pg.253]   


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S-[5-amino-5-

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