Cu 0 -catalysed 1,3-dipolar cycloadditions of α-amino acid derived N,N -cyclic azomethine imines to ynones
作者:Jona Mirnik、Eva Pušavec Kirar、Sebastijan Ričko、Uroš Grošelj、Amalija Golobič、Franc Požgan、Bogdan Štefane、Jurij Svete
DOI:10.1016/j.tet.2017.04.050
日期:2017.6
4-acylamino substituted pyrazolidine-3-one-1-azomethine imines and four terminal ynones were performed using Cu0 as catalyst. The corresponding fluorescent cycloadducts were obtained in very high yields upon simple workup. Thus, Cu-metal turned out to be a better catalyst than CuI in terms of yield and ease of isolation. Availability of azomethineimines, mild reaction conditions, and simple workup enable
使用Cu 0作为催化剂,在八个4-酰基氨基取代的吡唑烷-3-一-1-偶氮甲亚胺和四个末端炔酮之间进行了一系列的20次CuAIAC反应。通过简单的后处理即可以非常高的产率获得相应的荧光环加合物。因此,就产率和易于分离而言,Cu-金属被证明是比Cu I更好的催化剂。偶氮甲亚胺的可用性,温和的反应条件和简单的后处理使“点击”访问了密集取代的2,3-二氢-1 H,5 H-吡唑并[1,2- a ]吡唑-1-酮的文库。实验上通过量子化学方法(DFT)评估了不同取代的偶极子的反应性。
PROCESS FOR PREPARING N-H OR N-ALKYL 2-PROPYNAMIDE
申请人:DENG Da
公开号:US20140066655A1
公开(公告)日:2014-03-06
Disclosed is a method for the synthesis of N—H or N-alkyl 2-propynamides useful as intermediate in the manufacture of pharmaceutically active ingredients.
[EN] PROCESS FOR PREPARING N-H OR N-ALKYL 2-PROPYNAMIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE N-H- OU N-ALKYL-2-PROPYNAMIDE
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2014037308A1
公开(公告)日:2014-03-13
Disclosed is a method for the synthesis of N-H or N-alkyl 2-propynamides useful as intermediate in the manufacture of pharmaceutically active ingredients.
Synthesis of Pyrazolesulfoximines Using α-Diazosulfoximines with Alkynes
作者:Zhenhao Zhong、Tsz-Kan Ma、Andrew J. P. White、James A. Bull
DOI:10.1021/acs.orglett.3c04274
日期:2024.2.16
Sulfoximines and pyrazoles are both important motifs in medicinal compounds. Here we report the synthesis and reactivity of sulfoximine diazo compounds as new reagents for the incorporation of sulfoximines. The use of N-silyl sulfoximines enabled formation of monosubstituted diazo compounds. Their application is demonstrated in a [3 + 2] cycloaddition with alkynes to form pyrazole sulfoximines in a
Halopropiolamide compound, production and use thereof
申请人:TAKEDA CHEMICAL INDUSTRIES, LTD.
公开号:EP0649835A1
公开(公告)日:1995-04-26
There are provided with a novel N-substituted-3-halopropiolamide compound, a method of producing the compound, and a composition for controlling noxious organisms containing the compound. The present compound exhibits superior antimicrobial and antifungal effects. Pest control agents containing the compound can advantageously be used for wide applications.