[EN] IMPROVED PROCESS FOR THE PREPARATION OF CARBAMATES<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION D'UN INTERMÉDIAIRE DE CARBAMATES
申请人:TAMINCO BVBA
公开号:WO2018024828A1
公开(公告)日:2018-02-08
A process for the preparation of N-(dialkylaminoalkyl)-carbamic acid esters, in particular (propyl N-[3-(dimethylamino)propyl] carbamate) comprising an oxidative carbonylation reaction of a compound of general structure (II) wherein each of R1 and R2, equal to or different from each other, are independently selected from an alkyl group having 1 to 10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; R3 is selected from an alkyl group having 1 to 36 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; each of R', R" and R4, equal to or different from each other, are independently selected from H, an alkyl group having 1 to 10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; and n is an integer in the range from 1 to 8, with a hydroxyl compound of general formula (III), R3-OH (III) and in the presence of a catalyst system.
一种制备N-(二烷氨基烷基)-碳酸酯的方法,特别是(propyl N-[3-(二甲氨基)丙基]碳酸酯),包括将通式(II)化合物进行氧化羰基化反应,其中R1和R2分别相等或不同,独立地选择具有1至10个碳原子的烷基,该烷基可被至少一个卤素原子取代,芳基或芳基烷基;R3选择具有1至36个碳原子的烷基,该烷基可被至少一个卤素原子取代,芳基或芳基烷基;R'、R"和R4中的每一个分别相等或不同,独立地选择H,具有1至10个碳原子的烷基,该烷基可被至少一个卤素原子取代,芳基或芳基烷基;n为1至8的整数,与通式(III)的羟基化合物,R3-OH (III)以及催化剂体系一起存在。