| 摘要 |
PURPOSE:To obtain the titled compound useful as a raw material for various industrial chemicals, particularly stabilizer for resins, intermediate for medicines, and removing agent for heavy metal in fat or oil, etc., by reacting an acrylic acid ester with hydrogen sulfide in a solvent, e.g. an amide. CONSTITUTION:An acrylic acid ester of the formula CH=CHCOOR1 (R1 is 1- 8C alkyl, cycloalkyl or alkylcycloalkyl) is reacted with hydrogen sulfide in an amide solvent of formula I or II (R2-R5 are 1-18C hydrocarbon, etc.), e.g. dimethylformamide, in the presence or absence of a weakly basic amine base of formula III or IV (R10-R16 are 1-18C hydrocarbon, etc.) at 0-80 deg.C under pressure to give the aimed substance. The hydrogen sulfide is used in an equivalent of 1-5 times of that of the acrylic acid ester, and the pressure is 1-14atm. |
