氨基甲酸丁酯 、 异丁烯 在
正丁醇 作用下,
70.0 ℃
、266.64 kPa
条件下,
反应 4.0h,
以161 g (93% of theory) of butyl N-tert.-butylcarbamate of boiling point 110°-111° C./20 mbar were obtained的产率得到N-叔丁基氨基甲酸丁酯
investigated. Aniline was reacted with titanium n‐butoxide (1) in the presence of carbon dioxide (5 MPa) to give the corresponding n‐butyl N‐phenylcarbamate (BPC) in nearly quantitative yield (99 %) within 20 min. Furthermore, 1 could be regenerated upon reaction with n‐butanol during water removal. The recovered 1 could then be reused in a subsequent reaction.
研究了在Ti(OR)4(R = n Bu(1),Me(2),Et(3),n Pr(4))存在下从胺和二氧化碳直接合成氨基甲酸酯的方法。在二氧化碳(5 MPa)存在下,苯胺与正丁醇钛(1)反应,在20分钟内以几乎定量的产率(99%)得到相应的正丁基N-苯基氨基甲酸酯(BPC)。此外,在脱水过程中与正丁醇反应后可再生1。恢复的1 然后可以在后续反应中重复使用。
PRODUCTION METHOD OF CARBAMIC ACID ESTER
申请人:NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
公开号:US20190185420A1
公开(公告)日:2019-06-20
A method of production of carbamic acid ester has a high yield and high selectivity and is superior in economy. The method of production of a carbamic acid ester includes reacting an amine, carbon dioxide, and an alkoxysilane compound in the presence of a catalyst containing a zinc compound or an alkali metal compound or in the presence of an ionic liquid. A carbamic acid ester is produced, for example by reacting aniline, carbon dioxide, and tetramethoxysilane at a temperature of 150 to 180° C. in the presence of zinc acetate and 2,2′-bipyridine.
申请人:National Institute of Advanced Industrial Science
and Technology
公开号:EP3508473A1
公开(公告)日:2019-07-10
A method of production of carbamic acid ester has a high yield and high selectivity and is superior in economy. The method of production of a carbamic acid ester includes reacting an amine, carbon dioxide, and an alkoxysilane compound in the presence of a catalyst containing a zinc compound or an alkali metal compound or in the presence of an ionic liquid. A carbamic acid ester is produced, for example by reacting aniline, carbon dioxide, and tetramethoxysilane at a temperature of 150 to 180°C in the presence of zinc acetate and 2,2'-bipyridine.
申请人:NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
公开号:US10752579B2
公开(公告)日:2020-08-25
A method of production of carbamic acid ester has a high yield and high selectivity and is superior in economy. The method of production of a carbamic acid ester includes reacting an amine, carbon dioxide, and an alkoxysilane compound in the presence of a catalyst containing a zinc compound or an alkali metal compound or in the presence of an ionic liquid. A carbamic acid ester is produced, for example by reacting aniline, carbon dioxide, and tetramethoxysilane at a temperature of 150 to 180° C. in the presence of zinc acetate and 2,2′-bipyridine.