申请人:MTA Kozponti Kemiai Kutato Intezet
公开号:US04613461A1
公开(公告)日:1986-09-23
The invention relates to a new process for preparing known thiolcarbamate esters of the general formula (I) ##STR1## wherein R.sup.1 and R.sup.2 stand independently for hydrogen or a straight or branched chain alkyl group containing 1 to 6 carbon atoms or an alkenyl group containing 2 to 6 atoms, or an alkyl group containing 1 to 6 or an alkenyl group containing 2 to 6 carbon atoms and mono- or polysubstituted by halogen, oxygen, sulphur and/or nitrogen; or R.sup.1 and R.sup.2 together may represent an optionally substituted .alpha.,.omega.-alkylene group containing 4 to 6 carbon atoms; R.sup.3 and R.sup.4 stand independently for hydrogen or an alkyl group containing 1 to 4 carbon atoms and optionally substituted by halogen or by a group containing oxygen, sulphur and/or nitrogen; and R.sup.5 and R.sup.6 both stand for hydrogen; or R.sup.5 and R.sup.6 together may represent a chemical bond. The compounds of general formula (I) are prepared by reacting (a) thiolcarbamate salts of the general formula (II) ##STR2## wherein the meanings of R.sup.1 and R.sup.2 are as defined above, and Y stands for a primary, secondary or tertiary ammonium ion or an alkaline metal ion; or (b) amines of the general formula (III) ##STR3## wherein the meanings of R.sup.1 and R.sup.2 are as defined above, together with sulphur and carbon monoxide; or (c) amine of the general formula (III) together with carbonyl sulphide with alkynes of the general formula (IV) R.sup.3 --C.tbd.C--R.sup.4 (IV) wherein the meanings of R.sup.3 and R.sup.4 are as defined above and, if desired, hydrogenating the obtained product of general formula (I), wherein the meanings of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above and R.sup.5 together with R.sup.6 forms a chemical bond, to a compound of the general formula (I), wherein both R.sup.5 and R.sup.6 stand for hydrogen.
本发明涉及一种制备已知的一般式(I)的硫醇氨基甲酸酯的新工艺:其中R1和R2独立地代表氢或含有1至6个碳原子的直链或支链烷基或含有2至6个原子的烯基基团,或含有1至6个碳原子的烷基或含有2至6个碳原子的烯基基团并且单独或多次被卤素,氧,硫和/或氮取代;或者R1和R2一起表示可选取代的α,ω-烷基基团,含有4至6个碳原子;R3和R4独立地代表氢或含有1至4个碳原子的烷基基团,并且可选地被卤素或含氧,硫和/或氮的基团取代;R5和R6都代表氢;或者R5和R6一起表示化学键。通式(I)的化合物通过反应制备而成:(a)通式(II)的硫醇氨基甲酸盐反应而成:其中R1和R2的含义如上所述,Y代表一价,二价或三价铵离子或碱金属离子;或(b)通式(III)的胺反应而成:其中R1和R2的含义如上所述,同时与硫和一氧化碳反应;或(c)通式(III)的胺与碳酰硫共同反应,与通式(IV)的炔烃反应:其中R3和R4的含义如上所述,并且如果需要,对通式(I)的得到产物进行氢化,其中R1,R2,R3和R4的含义如上所述,而R5和R6结合成化学键,形成通式(I)的化合物,其中R5和R6都代表氢。