Isothiocyanates. I. Addition of urea to aroyl isothiocyanates and conversion of the monoadducts into monothiobiuret, 4-thioxo-1,3,5-triazin-2-ones and 1,2,4-thiadiazol-3-ones.

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概要

• 論文の詳細を見る

• The hitherto unknown 1-aroyl-2-thiobiurets were synthesized by addition of urea to aroyl isothiocyanates. Treatment of 1-benzoyl-2-thiobiuret with concentrated hydrochloric acid effected hydrolysis to monothiobiuret. On the other hand, treatment of 1-aroyl-2-thiobiurets with alkali gave 6-aryl-4-thioxo-1,2,3,4(or 2,3,4,5)-tetrahydro-1,3,5-triazin-2-ones. Oxidation of the 1-aroyl-2-thiobiurets with hydrogen peroxide in the presence of hydrochloric acid gave 5-aroylamino-2.3-dihydro-1,2,4-thiadiazol-3-ones.

• 公益社団法人 日本化学会の論文

著者

• Basyouni Mohamed

  Chemistry Department, Faculty of Science, Ain Shams University

• El-Khamry Abdel-Momen

  Chemistry Department, Faculty of Science, Ain Shams University

関連論文

• Stereochemistry of base-catalysed addition of methyl mercaptoacetate to acetylenic ketones and esters. Effects of activating groups and solvents.
• Isothiocyanates. I. Addition of urea to aroyl isothiocyanates and conversion of the monoadducts into monothiobiuret, 4-thioxo-1,3,5-triazin-2-ones and 1,2,4-thiadiazol-3-ones.

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