Methyl propyl sulphide

Methyl propyl sulphide C2H5-CH2SCH3 80.8 + 2.0 338.1 + 8.4 Derived from A H° in ref. 1986PED/NAY... 

Methyl propyl sulphide 73.3 + 1.5 306.7+6.5 Derived from AfH° 1986PED/NAY... 

METHYL ETHYL SULPHIDE N-PROPYL AMINE ISOPROPYL AMINE TRIMETHYL AMINE MALEIC ANHYDRIDE VINYL ACETYLENE... 

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... 

The proofs for the above constitutions are as follows (i) Thymol yields cymene, i-methyl 4-iso-propyl benzene, by loss of the hydroxyl oxygen by means of phosphorus penta-sulphide. (2) Carvacrol may be synthesized from potassium cymene sulphonate by fusion with potassium hydroxide. Therefore both must be mono-hydroxy cymenes. (3) Thymol by means of phosphorus pentoxide splits off the iso-propyl radical yielding meta-cresol and propylene. (4) Carvacrol by the same reaction yields ortho-cresol. Therefore in thymol the hydroxy group is meta to the methyl group while in carvacrol it is ortho. The following relationships are thus established. 

Lead n-propyl isoamyl dichloride is obtained from lead methyl n-propyl isoamyl chloride, and crystallises from hot alcohol, in which it is easily soluble, in plates, insoluble in benzene, ether, ethyl acetate, or water. The mlphide may be obtained in the usual way, and it is readily soluble in alcoliolic ammonium sulphide, sparingly in aqueous ammonium sulphide. 

Methyl Alcohol Ethyl Alcohol Propyl Alcohol Carbon Bi-Sulphide Chloroform Benzene Ether... 

Reaction of (64) with Co(OAc)2,4H20 in ethanol produces a cobalt(ii) chelate. The potentially quinquedentate ligands iVN -bis(salicylidene)-2,2 -bis(aminoethyl)sulphide and its 5-bromo, 5-methyl, 5-nitro, and 3-iso-propyl derivatives form neutral tetrahedral cobalt(ii) complexes." 2-(o-Hydroxyphenyl)benzothiazoline reacts with cobalt(ii) salts in a 2 1 molar ratio to form chelates of o-H2NCgH4.SN however, 2-phenylbenzothiazoline... 

Numerous odour-active VSCs have been detected in beers. Examples of beer VSCs encompass methanethiol, ethanethiol, H2S, dimethyl sulphide, dimethyl disulphide, methional, methionol, 3-(methylthio)propyl aceate and 2-mercapto-3-methyl-l-buta-nol (Angelino, 1991 HiU Smith, 2000). Most VSCs cause off-odours such as rotten egg-like, cabbage-like, onion-like and garlic-like. However, some VSCs have a positive impact on beer flavour by accentuating fruitiness (e.g. 3-mercaptohexanol and 3-mercaptohexyl acetate). 

Propyl methyl sulphide Propyl methyl disulphide... 

---