Ethyl formate mercaptan

Ethyl chloride Ethyl ether Ethyl formate 2-Ethyl hexanol Ethyl mercaptan Ethyl silicate Ethylene... 

ETHYLENE GLYCOL ETHYL MERCAPTAN DIMETHYL SULPHIDE ETHYL AMINE DIMETHYL AMIDE MONOETHANOLAMINE ETHYLENEDIAMINE ACRYLONITRILE PROPADIENE METHYL ACETYLENE ACROLEIN ACRYLIC ACID VINYL FORMATE ALLYL CHLORIDE 1 2 3-TRICHLOROPROPANE PROPIONITRILE CYCLOPROPANE PROPYLENE 1 2-DICHLOROPROPANE ACETONE ALLYL ALCOHOL PROPIONALDEHYDE PROPYLENE OXIDE VINYL METHYL ETHER PROPIONIC ACID ETHYL FORMATE METHYL ACETATE PROPYL CHLORIDE ISOPROPYL CHLORIDE PROPANE... 

Ethyl Lactate Ethyl Lactate Ethylidenenorbomene 1,1-Difluoroethane 1,1 -Difluoroethane Ethylidenenorbomene Ethylidenenorbomene Ethylidenenorbomene Ethyl Lactate Ethyl Lactate Ethyl Mercaptan Ethyl Methacrylate Ethyl Methacrylate Ethyl Methacrylate Ethyl Formate Methyl Ethyl Ketone Ethyl Methacrylate Ethyl Methacrylate Methylethylpyridine Acetonitrile Ethyl Nitrite Ethyl Silicate Ethyl Ether Ethyl Acetoacetate... 

Ethyl formate 146 C3H0O2 n-Propyl mercaptan Propanethiol 183 C3H3S... 

This interchange reaction is a convenient process for making orthoformates. The equilibrium is shifted to the right by removal of the volatile mercaptan to give high yields of the ortho esters. The reaction is catalysed by Frledel-Crafts type catalysts. The ethyl orthothioformate is available in nearly quantitative yield om ethyl formate and ethyl mercaptan. 

Gtmnal alkylation af ketones. Coates and Sowerby have reported a new method for site-selective geminal alkylation of ketones which involves reduction of the n-butylthiomethylene derivative of the ketone by lithium-ammonia to give a methyl-substituted cnolatc anion which can be alkylated in situ. The ketone, for example cyclohexanone (I), is condensed with ethyl formate and then transformed into the n-butylthiomethylene derivative (2) by reaction with n-butyl mercaptan (2, 53-54). This is then reduced with excess lithium in liquid ammonia at -33° with 2 eq. of a proton donor (water is usually used to avoid ovcralkylation). The lithium cnolate is then... 

A cloudy mixture of 20 g. (0.32 mole) of ethyl mercaptan and 12 g. (0.16 mole) of ethyl formate is cooled in an ice-salt bath while dry hydrogen chloride is introduced until the mixture becomes saturated. Hood.) On the introduction of the hydrogen chloride, the mixture becomes clear for a while, after which the water formed in the reaction causes reappearance of a second liquid phase. After several hours the reaction mixture is washed with water and the oily layer is removed by extraction with ether. After drying over calcium chloride, the ether layer is distilled to give 16 g. of ethyl orthothioformate, b.p. 133°/21 mm. The yield is 82% based on ethyl mercaptan. 

Ethyl formate 146 C3Hg02 n-Propyl mercaptan Propanethiol 183 C3H8S... 

Ethylidenenorbomene Ethylidenenorbomene Ethylidenenorbomene Ethyl Lactate Ethyl Lactate Ethyl Mercaptan Ethyl Methacrylate Ethyl Methacrylate Ethyl Methacrylate Ethyl Formate Methyl Ethyl Ketone Ethyl Methacrylate... 

Mercaptals, CH2CH(SR)2, are formed in a like manner by the addition of mercaptans. The formation of acetals by noncatalytic vapor-phase reactions of acetaldehyde and various alcohols at 35°C has been reported (67). Butadiene [106-99-0] can be made by the reaction of acetaldehyde and ethyl alcohol at temperatures above 300°C over a tantala—siUca catalyst (68). Aldol and crotonaldehyde are beheved to be intermediates. Butyl acetate [123-86-4] has been prepared by the catalytic reaction of acetaldehyde with 1-butanol [71-36-3] at 300°C (69). 

The formation of LXVI may be due to the reaction of ethyl mercaptan with the ketene (CH3CH=C=0) produced by photolysis of the diazoketone. 

Ethyl mercaptan, IV, 93, 94 Ethyl sulfuric acid, catalytic formation, V, 52... 

Mercaptans. — Bunge3 electrolyzed the alkali salts of ethyl and methyl mercaptans and observed the formation of disulphides at the positive pole. In the case of the sulpho-compounds, however, the free adds were generated. 

Dimethoxy Phenol 3,4-Dimethyl 1,2-Cyclopen tandione 5-Ethyl 3-Hydroxy 4-Methyl 2(5H)-Furanone 3-Ethyl Pyridine Furfuryl Mercaptan Geranyl Isovalerate 2,3 -Heptandione (Z)-3-Hexenyl Butyrate (Z)-3-Hexenyl Formate Hexyl Butyrate Hexyl Hexanoate Isoamyl Isobutyrate Isobutyl Formate Isobutyl Hexanoate Linalool Oxide... 

Maltol Isobutyrate 2-Methoxy 3-(or 5- or 6-) Isopropyl Pyrazine 5H-5-Methyl-6,7 -dihydrocyclopenta[b]pyrazine 5-Methyl Furfural Methyl Furoate Methyl Hexanoate Methyl Isovalerate 5-Methyl 2-Phenyl 2-Hexenal Methyl Thiobutyrate Methyl Valerate P-Naphthyl Ethyl Ether Phenyl Ethyl Cinnamate Phenyl Ethyl Propionate Propyl Formate Propyl Mercaptan Salicylaldehyde 8-T etradecalactone 2-Tridecanone... 

Calculate the standard heats of formation of benzene)/), methanol(Z), aniline(/), methyl chloride)/ ), and ethyl mercaptan(Z) using heat-of-combustion data, knowledge of the combustion products, and the equations in Table 1.20. 

Finally, aldehydes can react with nitrogen (31-32) and sulfur nucleophiles, including H2S, which may also be present in wines. These reactions may have dramatic effects on flavor and aroma (e.g., formation of ethyl mercaptan from acetaldehyde and H2S results in formation of a onion-like or burnt rubber aroma) and will decrease the levels of free aldehydes which can be readily quantitated (1). 

Some experiments have been carried out with ethylene-ethane mixtures as well. The data given in Table VII show the expected trend, in that with increasing ethane pressure, at a fixed ethylene concentration, the ethyl mercaptan yield increases at the expense of the yields of vinyl mercaptan and episulfide. However, while vinyl mercaptan formation seems to be completely suppressible with increasing ethane pressure, this is not the case with the episulfide. This seems clearly to be due to the fact that the two mercaptans form in competing reactions for S( Z)) atoms, while episulfide can form from ( P) atoms, arising by the collisionally induced S( Z>) - S( P) transition. 

The rate at which S( Z)) atoms react with ethylene, ethane, and COS are all of the same order of magnitude. Thus some approximate preliminary relative rate constant values are ethyl mercaptan formation 1.0 vinyl mercaptan formation 0.80 abstraction from COS, 2.0 deactivation by CO2, 0.4 and deactivation by COS, 0.06. In addition, preliminary data seem to indicate that the reactivity of sulfur atoms, formed in the photolysis of COS, increases with increasing alkyl substitution on the doubly bonded carbon atoms. However, these rate studies have proven to be more complex than anticipated in that there is an apparent pressure effect on the rate constant values. 

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