Studies of the Thiocarbonyl Compounds. I. Syntheses and Thermal Rearrangement of <I>O</I>,<I>S</I>-Diaryl Dithiocarbonates

スポンサーリンク

概要

• 論文の詳細を見る

• Various <I>O</I>,<I>S</I>-diaryl dithiocarbonates with the general formula of <I>p</I>-X–C<SUB>6</SUB>H<SUB>4</SUB>–S–C(=S)–O–C<SUB>6</SUB>H<SUB>4</SUB>–Y-<I>p</I> (I) were prepared. When these substances were kept at an elevated temperature, they rearranged smoothly to <I>S</I>,<I>S</I>-diaryl dithiocarbonates of this general formula: <I>p</I>-X–C<SUB>6</SUB>H<SUB>4</SUB>–S–C(=O)–S–C<SUB>6</SUB>H<SUB>4</SUB>-Y-<I>p</I> (II). Kinetic studies showed that the rearrangement followed fairly good first-order kinetics. The rate constants in diphenyl ether at 200°C increased in the order: Y=OCH<SUB>3</SUB><CH<SUB>3</SUB><H<Cl<COCH<SUB>3</SUB><CN<NO<SUB>2</SUB>. The entropies of activation were negative, and no crossover products were obtained. A four-membered cyclic structure can be suggested as the transition state for this rearrangement.

• 公益社団法人 日本化学会の論文

著者

• Araki Yoshiaki

  Department of Chemistry, Faculty of Science, Kyoto University

関連論文

• On the Self-Synchronization of Mechanical Vibrators of the Resonance Type Vibrating Machinery with Multidegree-Of-Freedom
• Automatic Balancer : Pendulum Balancer
• Lithological and physical properties of core samples from the Sagara oil field : Oil occurrence in Sagara core samples
• Studies of the Thiocarbonyl Compounds. II. Syntheses and Thermal Rearrangement of Aryl Thionobenzoates
• Studies of the Thiocarbonyl Compounds. III. The Mechanism of the Thermal Rearrangement of Aryl Thionocarboxylates
• Studies of the Thiocarbonyl Compounds. I. Syntheses and Thermal Rearrangement of O,S-Diaryl Dithiocarbonates

スポンサーリンク