Process for manufacture of N-alk(en)oxy(or aryloxy)carbonyl isothiocyanates and their derivatives in the presence of N,N-dialkylarylamine catalyst
申请人:Bayer Corporation
公开号:EP1059289A1
公开(公告)日:2000-12-13
The present invention provides a process for making N-alk(en)oxy(or aryloxy)carbonyl isothiocyanate derivatives by reacting a haloformate with a thiocyanate, in the presence of an aqueous solvent or an organic solvent and a catalytic amount of a N,N-dialk(en)ylarylamine, to produce a N-alkoxy (or aryloxy)carbonyl isothiocyanate intermediate product, wherein the intermediate product is converted to a N-alk(en)oxy(or aryloxy)carbonyl isothiocyanate derivative in high yield and purity. The invention further provides a process for making N-alk(en)oxy (or aryloxy)carbonyl isothiocyanates by reacting a haloformate with a thiocyanate, in the presence of an aqueous solvent or an organic solvent and a catalytic amount of a N,N-dialk(en)ylarylamine.
本发明提供了一种制造 N-烷氧基(或芳氧基)羰基异硫氰酸酯衍生物的工艺,该 工艺在水溶剂或有机溶剂以及催化量的 N. N. 二烷基(烯)丙烯胺的存在下,使卤代甲酸酯与硫氰 酸酯反应,生成 N-烷氧基(或芳氧基)羰基异硫氰酸酯中间产物、N-二烷氧基(或芳氧基)羰基异硫氰酸酯中间产物,其中中间产物以高收率和高纯度转化为 N-烷氧基(或芳氧基)羰基异硫氰酸酯衍生物。本发明进一步提供了一种制造 N-烷(烯)氧(或芳氧基)羰基异硫氰酸酯的工艺,其方法是在水溶剂或有机溶剂以及催化量的 N,N-二烷基(烯)酰基胺存在下,使卤代甲酸酯与硫氰酸盐反应。