申请人:——
公开号:US20020019565A1
公开(公告)日:2002-02-14
This invention is directed to a process for making an iminodiacetic acid compound from a monoethanolamine compound having the following formula:
1
wherein R
1
is hydrogen, hydrocarbyl, or substituted hydrocarbyl.
In one embodiment, the process comprises contacting the monoethanolamine substrate with a cyanide source and a formaldehyde source to form a N-cyanomethylated monoethanolamine intermediate, and contacting the N-cyanomethylated monoethanolamine intermediate with a hydroxide source and a metal-containing catalyst to form the iminodiacetic acid compound.
这项发明涉及一种从具有以下结构的单乙醇胺化合物制备亚胺二乙酸化合物的方法:其中R1是氢、烃基或取代烃基。在一种实施方式中,该方法包括将单乙醇胺底物与氰源和甲醛源接触,形成N-氰甲基化的单乙醇胺中间体,然后将N-氰甲基化的单乙醇胺中间体与氢氧化物源和含金属催化剂接触,形成亚胺二乙酸化合物。