An acylcyclohexadionethiocarboxylic S-ester of the fomrula ##STR1## where R.sup.1 and R.sup.2 are substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, benzyl or phenyl, and R.sup.2 is additionally hydrogen, are prepared by reacting an acylcyclohexadione II ##STR2## with hydroxylamine or hydroxylamine-O-sulfonic acid in an inert solvent at from 0.degree. to 150.degree. C., to give an acylcyclohexadione compound III ##STR3## and then reacting the compound III with a mercaptan IV R.sup.2 --SH IV in the presence of an anhydrous acid HX to give an acylcyclohexadionethiocarboximidic S-ester salt V ##STR4## where X is the anion of the acid, and hydrolyzing the compounds V to the acylcyclohexadionethiocarboxylic S-ester I.
该文本描述了一种制备酰基环己二酮
硫代酯的方法,其
化学式为##STR1##其中R.sup.1和R.sup.2是取代或未取代的烷基,烯基,炔基,环烷基,苄基或苯基,而R.sup.2还是氢。该方法通过将酰基环己二酮II##STR2##与
羟胺或
羟胺-O-
磺酸在惰性溶剂中反应,反应温度从0℃到150℃,得到酰基环己二酮化合物III##STR3##然后在无
水酸HX的存在下将化合物III与巯基化合物IV R.sup.2 --SH IV反应,得到酰基环己二酮
硫代
酰亚胺S-酯盐V##STR4##其中X是酸的阴离子,并将化合物V
水解为酰基环己二酮
硫代酯I。