Alkylene thioureas

The only practical method for preparing alkylene thioureas is by the action of the diamines upon carbon disulfide in aqueous alcohol. The final heating is essential to convert the thio-carbamic acid into the cyclic compound, the addition of hydrochloric acid being beneficial. ... 

Alkylene bromide, 20, 24 Alkylene thioureas, 26, 35 Alkylidenecyanoacetic esters, 25, 48 Alkyl lactate, 26, 6 Alkyl phenyl selenides, 24, 91 S-Alkylthiuronium halides, 22, 60 d/-ALLOTHREONINE, 20, 104 Alloxan, 23, 3... 

Addition tube, 20, 21 Alanine, /3-(3,4-dihydroxyphenyl)-N-METHYL-, 22, 89, 91 Alcoholic hydrochloric acid, 22, 77, 83 standardization, 22, 80 Alcoholysis, 20, 67 Aldehyde synthesis, 20, 14 from acid chlorides by Rosenmund reaction, 21, 84, 87, 88, 110 Alkylation of thiourea, 22, 59 Alkylchlororesorcinols, 20, 59 Alkylene bromide, 20, 24 S-Alkylthiuronium halides, 22, 60 dl-ALLOTHREONINE, 20, 10 ... 

THIOUREA or 2-THIOUREA (62-56-6) Aqueous solution is a base. Violent reaction with acrolein, strong acids. Incompatible with acrylaldehyde, hydrogen peroxide, metal salts. Aqueous solution incompatible with organic anhydrides, acrylates, alcohols, aldehydes, alkylene oxides, substimted allyls, cresols, caprolactam solution, epichlorohydrin, ethylene dichloride, glycols, hydrogen peroxide, isocyanates, ketones, maleic anhydride, nitrates, nitromethane, phenols, vinyl acetate. 

Simple addition, in which both fragments of the NH molecule enter the new compound as in the preparation of alkanolamines from alkylene oxides, aminonitriles from unsaturated nitriles, and ureas and thioureas from isocyanates and isothiocyanates. 

Culvenor, Davies, and Pausacker extended the alkylene oxide-thiourea, thiocyanate, or thiocarbamide synthesis to prepare the higher alkylene sulfide monomers [53],... 

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