| 摘要 |
PURPOSE:To obtain a trithiocarbonate safely and in high yield without the need for using an excess of carbon disulfide, therefore, without the need for recovering the explosive carbon disulfide, by reaction in a sealed tube between carbon disulfide and an alkali sulfide. CONSTITUTION:The objective trithiocarbonate can be obtained by reaction under heating a pressure sealed tube containing a solution of equimolar amounts of carbon disulfide and an alkali sulfide (e.g. sodium sulfide). The reaction solvent is pref. water or an alcohol; for the reaction in an aqueous solution, after completing the reaction, the resulting liquor can be directly provided, as an aqueous solution of the trithiocarbonate, to e.g. a mercaptoamine production process; or, the trithiocarbonate can be isolated in the form of crystal by removing the water from said solution. For the reaction in an alcohol, the reaction liquor is cooled, and the crystal deposited is collected through filtration, thus isolating said carbonate in the form of crystal. Thereby, the objective trithiocarbonate can be obtained at an yield of about 94 to 99mol%. |
