Studies of the Thiocarbonyl Compounds. I. Syntheses and Thermal Rearrangement of<i>O</i>,<i>S</i>-Diaryl Dithiocarbonates
作者:Yoshiaki Araki
DOI:10.1246/bcsj.43.252
日期:1970.1
S-diaryl dithiocarbonates with the general formula of p-X–C6H4–S–C(=S)–O–C6H4–Y-p (I) were prepared. When these substances were kept at an elevated temperature, they rearranged smoothly to S,S-diaryl dithiocarbonates of this general formula: p-X–C6H4–S–C(=O)–S–C6H4-Y-p (II). Kinetic studies showed that the rearrangement followed fairly good first-order kinetics. The rate constants in diphenyl ether at
制备了通式为 pX–C6H4–S–C(=S)–O–C6H4–Yp (I) 的各种 O,S-二芳基二硫代碳酸酯。当这些物质保持在高温下时,它们会顺利地重排为以下通式的 S,S-二芳基二硫代碳酸酯:pX–C6H4–S–C(=O)–S–C6H4-Yp (II)。动力学研究表明,重排遵循相当好的一级动力学。二苯醚在 200°C 时的速率常数按顺序增加:Y=OCH3