There is provided a process for the preparation of an amido or an ureido derivative of certain 4,5,6,7-tetrahydro-7-oxobenzo[b]thiophenes or certain 1,2,3,4-tetrahydro-4-oxonaphthalenes which can be employed as an animal growth regulant. The process comprises: oxidizing in the presence of a cobaltic carboxylate reactant and in the absence or presence of air, a compound having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each a substituent selected from the group consisting of alkanoyl C.sub.1 -C.sub.7, halogen-substituted alkanoyl C.sub.1 -C.sub.7, carboalkoxy C.sub.1 -C.sub.4, ##STR2## and ##STR3## R.sub.3 is selected from the group consisting of hydrogen and alkyl C.sub.1 -C.sub.4 ; R.sub.4 is selected from the group consisting of hydrogen, alkyl C.sub.1 -C.sub.8, alkanoyl C.sub.2 -C.sub.4, halogen-substituted alkanoyl (C.sub.2 -C.sub.4), and ##STR4## and when the ##STR5## moiety is cyclized each represents a moiety selected from the group consisting of succinimido, maleimido and phthalimido; X and Y are each a radical selected from the group consisting of hydrogen, fluorine, chlorine, bromine, iodine, nitro, alkyl C.sub.1 -C.sub.4 ; the racemic mixtures and the optical isomers thereof.
提供了一种制备某些4,5,6,7-四氢-7-氧代苯并[b]
噻吩或某些1,2,3,4-四氢-4-氧代
萘的酰胺或
脲衍
生物的方法,可用作动物生长调节剂。该方法包括:在
钴羧酸盐反应物的存在下,在空气存在或不存在的情况下,氧化具有以下式子的化合物:##STR1##其中R.sub.1和R.sub.2均为选自羰基C.sub.1-C.sub.7,卤代羰基C.sub.1-C.sub.7,羧基烷氧基C.sub.1-C.sub.4,##STR2##和##STR3##的取代基;R.sub.3选自氢和烷基C.sub.1-C.sub.4;R.sub.4选自氢,烷基C.sub.1-C.sub.8,羰基烷C.sub.2-C.sub.4,卤代羰基(C.sub.2-C.sub.4)和##STR4##当##STR5##基团环化时,每个表示选自琥珀
酰亚胺基,马来
酰亚胺基和邻苯二甲
酰亚胺基的基团;X和Y分别为选自氢,
氟,
氯,
溴,
碘,硝基,烷基C.sub.1-C.sub.4的基团;其外消旋混合物和其光学异构体。