申请人:Societe Nationale des Poudres et Explosifs
公开号:US04725680A1
公开(公告)日:1988-02-16
The invention relates to a process for preparing carbamic acid derivatives of formula: ##STR1## in which R.sup.1 or R.sup.2 denotes a hydrogen atom or a substituted or unsubstituted, saturated or unsaturated aliphatic, cycloaliphatic or heterocyclic radical, or R.sup.1 and R.sup.2 together form a ring, and Y denotes OR, SR, ##STR2## groups, R being a substituted or unsubstituted, saturated or unsaturated aliphatic or cycloaliphatic radical, or a substituted or unsubstituted aromatic radical, R.sup.3 and R.sup.4 denote a hydrogen atom or an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical or together form a ring, and R.sup.6 and R.sup.7 denote a saturated or unsaturated, substituted or unsubstituted aliphatic or cycloaliphatic radical, a hydrogen atom, an alkylthio radical or an alkyloxy radical. According to the process, a compound of formula ##STR3## is reacted with an .alpha.-halogenated derivative of formula ##STR4## at a temperature of -5.degree. to 150.degree. C. in the presence of an acceptor for hydrohalic acid. The carbamates, thiocarbamates or ureas obtained are very useful, especially as pesticides.
本发明涉及一种制备公式为##STR1##的氨基甲酸衍生物的方法,其中R.sup.1或R.sup.2表示氢原子或取代或未取代的、饱和或不饱和的脂肪族、环脂肪族或杂环基团,或者R.sup.1和R.sup.2共同形成一个环,Y表示OR、SR、##STR2##基团,R表示取代或未取代的、饱和或不饱和的脂肪族或环脂肪族基团,或者取代或未取代的芳香族基团,R.sup.3和R.sup.4表示氢原子或脂肪族、环脂肪族、脂环族、芳香族或杂环基团,或者共同形成一个环,R.sup.6和R.sup.7表示饱和或不饱和的、取代或未取代的脂肪族或环脂肪族基团、氢原子、烷基硫基团或烷氧基团。根据本过程,将公式为##STR3##的化合物与公式为##STR4##的α-卤代衍生物在-5至150摄氏度的温度下,在卤化氢酸的受体存在下进行反应。所得到的氨基甲酸酯、硫代氨基甲酸酯或脲非常有用,尤其是作为农药。