我们报告了一种新的电化学无负载电解质方法,用于通过草酸氧化合成尿素、氨基甲酸酯和硫代氨基甲酸酯。这种简单、实用且无光气的路线包括在有机碱存在下通过草酸的阳极脱羧原位生成异氰酸酯中间体,然后一锅加入合适的亲核试剂以提供相应的尿素,氨基甲酸酯和硫代氨基甲酸酯。此程序适用于不同的胺、醇和硫醇。此外,当使用单程连续电化学流动条件并且该反应在碳石墨 C gr /C gr 在流动池中,可以在 6 分钟的停留时间内以高产率获得尿素化合物,解锁在批量条件下无法访问的底物,同时易于扩展。
DOI:
10.1021/acs.oprd.1c00112
作为产物:
描述:
2-苯乙胺 、 草酸二乙酯 在
甲苯 、 正己烷 作用下,
以
甲苯 为溶剂,
反应 5.25h,
以to obtain 158 g (710 mmol, yield 86%) of ethyl N-(2-phenylethyl)oxamate as white crystals的产率得到2-氧代-2-(苯乙基氨基)乙酸乙酯
Novel pyridine derivative and pyrimidine derivative
申请人:Matsushima Tomohiro
公开号:US20050277652A1
公开(公告)日:2005-12-15
A compound represented by the following formula, a salt thereof or a hydrate of the foregoing has an excellent hepatocyte growth factor receptor (HGFR) inhibitory activity, and exhibits anti-tumor activity, angiogenesis inhibitory activity and cancer metastasis inhibitory activity.
[R
1
represents C
1-6
alkyl or the like; R
2
and R
3
represent hydrogen; R
4
, R
5
, R
6
, and R
7
may be the same or different and each represents hydrogen, halogen, C
1-6
alkyl or the like; R
8
represents hydrogen or the like; R
9
represents C
1-6
alkyl or the like; V
1
represents oxygen or the like; V
2
represents oxygen or sulfur; W represents —NH— or the like; X represents —CH═, nitrogen or the like; and Y represents oxygen or the like.]
A One-Pot Synthesis of Functionalised 3-pyrolin-2-ones by a four-component reaction between Triphenylphosphine, Primary Amines, Dimethyl Acetylenedicarboxylate and Ethyl Chlorooxoacetate
Reactionbetween triphenylphosphine, dimethy acetylenedicarboxylate and amines produces phosphorus ylids which undergo a smooth reaction with ethyl chlorooxoacetate and triethylamine to produce dimethyl N-aryl-(or alkyl)-4-ethoxy-5-oxo-2,5-dihydro-1H-pyrole-2,3-dicarboxylates in high yields.
The generation of carbamoyl radicals, followed by their addition to heteroarenes, was performed under mild conditions through a metal-free photocatalyzed decarboxylation of oxamic acids. The process has been applied to the carbamoylation of heteroaromatic bases using α-aminoacid-derived oxamic acids, leading to the corresponding amides without racemization.
Novel pyridine Derivative and Pyrimidine Derivative (1)
申请人:Matsushima Tomohiro
公开号:US20070270421A1
公开(公告)日:2007-11-22
A compound represented by the following formula, a salt thereof or a hydrate of the foregoing has an excellent hepatocyte growth factor receptor (HGFR) inhibitory activity, and exhibits anti-tumor activity, angiogenesis inhibitory activity and cancer metastasis inhibitory activity.
[R
1
represents C
1-6
alkyl or the like; R
2
and R
3
represent hydrogen; R
4
, R
5
, R
6
, and R
7
may be the same or different and each represents hydrogen, halogen, C
1-6
alkyl or the like; R
8
represents hydrogen or the like; R
9
represents C
1-6
alkyl or the like; V
1
represents oxygen or the like; V
2
represents oxygen or sulfur; W represents —NH— or the like; X represents —CH═, nitrogen or the like; and Y represents oxygen or the like.]
It is an object of the present invention to provide 2-iminocarboxylic acid derivatives, and a practically suitable industrial method for producing benzazepinones in a short process under mild conditions. The present invention provides a method for producing a benzazepinone or a salt thereof, which comprises opening a ring of an isoquinoline derivative and subsequently converting the thus generated amine into a benzazepinone through lactamization reaction.