4-卤代苯基-5-乙氧羰基-6-甲基-3... 申请号:CN201810150052.5 专利类型:发明授权 公开(公告)日:
状态:寻求转化 转让价格:面议
本发明涉及一种4‑卤代苯基‑5‑乙氧羰基‑6‑甲基‑3, 4‑二氢嘧啶‑2(1H)‑酮的合成方法。该方法具体为:以卤代苯甲醛、乙酰乙酸乙酯和尿素为底物,DES为催化剂,无溶剂条件下,于60‑75℃搅拌反应30‑45min;所述卤代苯甲醛、乙酰乙酸乙酯、尿素和DES的摩尔比为1:1:1.5:0.3。本发明以价廉易得的DES做催化剂,反应过程中不需要加入其它溶剂,可以有效减少其他有机溶剂和腐蚀性催化剂...
4-卤代苯基-5-乙氧羰基-6-甲基-3... 申请号:CN201810150052.5 专利类型:发明授权 公开(公告)日:
状态:寻求转化 转让价格:面议
本发明涉及一种4‑卤代苯基‑5‑乙氧羰基‑6‑甲基‑3, 4‑二氢嘧啶‑2(1H)‑酮的合成方法。该方法具体为:以卤代苯甲醛、乙酰乙酸乙酯和尿素为底物,DES为催化剂,无溶剂条件下,于60‑75℃搅拌反应30‑45min;所述卤代苯甲醛、乙酰乙酸乙酯、尿素和DES的摩尔比为1:1:1.5:0.3。本发明以价廉易得的DES做催化剂,反应过程中不需要加入其它溶剂,可以有效减少其他有机溶剂和腐蚀性催化剂...
4-卤代异吲哚啉盐酸盐的制备方法 申请号:CN201710816259.7 专利类型:发明申请 公开(公告)日:2017-09-12
状态:寻求转化 转让价格:面议
本发明提供了一种4‑卤代异吲哚啉盐酸盐的制备方法,由2, 3‑二卤甲基‑3‑卤代苯为原料,经环合反应制备得到式Ⅰ化合物,反应式如下:n为1或2;其中,X1为卤素,R为烷氧基,氨甲酰基,苯氧基,苄氧基,羰基,羟基,酰胺或烷基取代的酰胺。所述环合反应试剂为烷氧胺,尿素,苯氧胺,苄氧胺,羟胺或酰肼等。后经还原或者水解反应制备得到4‑卤代异吲哚啉盐酸盐。本发明不仅还原反应条件温和,而且,反应收率高,成本低...
4-substituted coumar... 申请号:US15761885 专利类型:发明授权 公开(公告)日:
状态:寻求转化 转让价格:面议
The present invention pertains to the field of chemical medicine, particularly to 4-substituted coumarin derivatives and preparation methods and applications thereof. The invention provides 4-substit...
4-substituted coumar... 申请号:US15761885 专利类型:发明授权 公开(公告)日:
状态:寻求转化 转让价格:面议
The present invention pertains to the field of chemical medicine, particularly to 4-substituted coumarin derivatives and preparation methods and applications thereof. The invention provides 4-substit...
4-SUBSTITUED COUMARI... 申请号:EP16847758 专利类型:检索报告 公开(公告)日:2016-02-29
状态:寻求转化 转让价格:面议
The present Invention pertains to the field of chemical medicine, particularly to 4-substituted coumarin derivatives and preparation methods and applications thereof. The Invention provides 4-substit...
4-HYDROXY-3-(HETEROA... 申请号:JP2019023478 专利类型:发明申请 公开(公告)日:
状态:寻求转化 转让价格:面议
PROBLEM TO BE SOLVED : To provide compounds for the treatment and/or prophylaxis of multiple diseases or disorders associated with APJ, stereoisomers, tautomers, pharmaceutically acceptable salts,...
4-Formyl-3-hydroxy-2... 申请号:MD20170061 专利类型:发明授权 公开(公告)日:
状态:寻求转化 转让价格:面议
The invention relates to organic chemistry and medicine, in particular to a biologically active organic compound of the dithiohydrazone class, 4-formyl-3-hydroxy-2-naphthoic acid derivative of the F...
4-AMINOPYRIMIDINE DE... 申请号:WOCN18085021 专利类型:发明申请 公开(公告)日:2018-04-28
状态:寻求转化 转让价格:面议
Disclosed is a 4-aminopyrimidine derivative used as an adenosine A2A receptor antagonist, having general structural formula (I). R1 is selected from halogen, cyano group, or trifluoromethyl; R2 is...
4-AMINOPYRIDINE DERI... 申请号:WOCN18109300 专利类型:发明申请 公开(公告)日:
状态:寻求转化 转让价格:面议
Disclosed are a 4-aminopyridine derivative, a pharmaceutical composition thereof, a preparation method therefor and a use thereof. The 4-aminopyridine derivative (I) of the present invention, and a...