33471-66-8Relevant academic research and scientific papers
Insight into the Mechanism of the CuAAC Reaction by Capturing the Crucial Au4Cu4-π-Alkyne Intermediate
Fang, Yaping,Bao, Kang,Zhang, Peng,Sheng, Hongting,Yun, Yapei,Hu, Shu-Xian,Astruc, Didier,Zhu, Manzhou
supporting information, p. 1768 - 1772 (2021/02/06)
The classic Fokin mechanism of the CuAAC reaction of terminal alkynes using a variety of Cu(I) catalysts is well-known to include alkyne deprotonation involving a bimetallic σ,π-alkynyl intermediate. In this study, we have designed a CNT-supported atomica
Copper-catalyzed: In situ oxidative-coupling for one-pot synthesis of 5-aryl-1,4-disubstituted 1,2,3-triazoles under mild conditions
Li, Lingjun,Li, Qianqian,Wang, Chao,Wang, Shilei,Zhu, Anlian,Zhu, Gongming
, p. 38108 - 38114 (2021/12/09)
A new reaction system with CuCl as catalyst, TEA as base and O2/chloramine-T as oxidant was developed for one-pot in situ oxidative-coupling to synthesize 5-aryl-1,4-disubstituted 1,2,3-triazoles in this paper. A variety of 5-arylated-1,2,3-triazole compounds could be efficiently prepared directly from the readily accessible organic azides, terminal alkynes and arylboronic acids. Advantages of the method include use of low-cost catalyst, clean oxidant, less-toxic additive, and low reaction temperature. Importantly, due to avoiding harsh strong basic reagents and high temperatures, the presented method can offer mild conditions for multi-component synthesis of 5-aryl-1,2,3-triazoles from the designed structurally complicated alkynyl or azide donors bearing natural product motifs and sensitive functional groups.
General Synthesis of Tri-Carbo-Substituted N2-Aryl-1,2,3-triazoles via Cu-Catalyzed Annulation of Azirines with Aryldiazonium Salts
Cheung, Chi Wai,Feng, Fang-Fang,Li, Jun-Kuan,Liu, Xuan-Yu,Ma, Jun-An,Zhang, Fa-Guang
, p. 10872 - 10883 (2020/09/23)
The general synthesis of fully substituted N2-aryl-1,2,3-triazoles is hitherto challenging compared with that of the N1-aryl counterparts. Herein, we describe a Cu-catalyzed annulation reaction of azirines and aryldiazonium salts. This regiospecific metho
Copper-Catalyzed Decarboxylative Cycloaddition of Propiolic Acids, Azides, and Arylboronic Acids: Construction of Fully Substituted 1,2,3-Triazoles
Li, Ya-Min,Li, Yi,Wang, Xiang-Xiang,Xia, Wen-Jin,Xin, Yangchun,Ye, Rui-Rong,Zhou, Bin
, p. 3576 - 3586 (2020/03/23)
A copper-catalyzed decarboxylative cycloaddition of propiolic acids, azides, and arylboronic acids is described. The present reaction provides an efficient and convenient method for the synthesis of various fully substituted 1,2,3-Triazoles from readily available starting materials. A possible mechanism is proposed.
An enolate-mediated regioselective synthesis of 1,2,3-triazoles via azide-aldehydes or ketones [3+2]-cycloaddition reactions in aqueous phase
Chavan, Subhash P.,Joshi, Sameer M.,Llop, Jordi,Rode, Chandrashekhar V.,Tripathi, Anupam
supporting information, (2020/02/13)
A synthetic route for the direct conversion of arylazides into the corresponding trizoles via phase transfer catalyst-assisted [3+2] cycloaddition reaction under basic conditions in aqueous medium is reported. This synthetic methodology, which offers high
CuI/Et 2 NH-Catalyzed One-Pot Highly Efficient Synthesis of 1,4-Disubstituted 1,2,3-Triazoles in Green Solvent Glycerol
Guo, Shengqiang,Zhou, Yang,Dai, Bencai,Huo, Cuimeng,Liu, Changchun,Zhao, Yongde
supporting information, p. 2191 - 2199 (2018/04/05)
A concise one-pot three-component reaction of organic halides, terminal acetylenes, and sodium azide provided an efficient route for the synthesis of 1,2,3-triazoles. A variety of 1,2,3-triazoles were prepared in good to excellent yields with green solven
Nickel-Catalyzed Azide-Alkyne Cycloaddition to Access 1,5-Disubstituted 1,2,3-Triazoles in Air and Water
Kim, Woo Gyum,Kang, Mi Eun,Lee, Jae Bin,Jeon, Min Ho,Lee, Sungmin,Lee, Jungha,Choi, Bongseo,Cal, Pedro M. S. D.,Kang, Sebyung,Kee, Jung-Min,Bernardes, Gon?alo J. L.,Rohde, Jan-Uwe,Choe, Wonyoung,Hong, Sung You
, p. 12121 - 12124 (2017/09/12)
Transition-metal-catalyzed or metal-free azide-alkyne cycloadditions are methods to access 1,4- or 1,5-disubstituted 1,2,3-triazoles. Although the copper-catalyzed cycloaddition to access 1,4-disubstituted products has been applied to biomolecular reaction systems, the azide-alkyne cycloaddition to access the complementary 1,5-regioisomers under aqueous and ambient conditions remains a challenge due to limited substrate scope or moisture-/air-sensitive catalysts. Herein, we report a method to access 1,5-disubstituted 1,2,3-triazoles using a Cp2Ni/Xantphos catalytic system. The reaction proceeds both in water and organic solvents at room temperature. This protocol is simple and scalable with a broad substrate scope including both aliphatic and aromatic substrates. Moreover, triazoles attached with carbohydrates or amino acids are prepared via this cycloaddition.
A general method of Suzuki-Miyaura cross-coupling of 4- and 5-halo-1,2,3-triazoles in water
Gribanov, Pavel S.,Chesnokov, Gleb A.,Topchiy, Maxim A.,Asachenko, Andrey F.,Nechaev, Mikhail S.
, p. 9575 - 9578 (2017/11/30)
A general method of the synthesis of 1,4,5-trisubstituted-1,2,3-triazoles by Suzuki-Miyaura cross-coupling from 4- and 5-halo-1,2,3-triazoles is reported. The reaction is mediated by an expanded-ring N-heterocyclic carbene palladium complex in water. The
Palladium-Catalyzed Regioselective C-5 Arylation of 1,2,3-Triazoles with Diaryliodonium Salts
Gang, Fangli,Che, Yang,Du, Zhengyin,Feng, Hua,Fu, Ying
supporting information, p. 1624 - 1629 (2017/08/11)
An effective method for C-5 arylation of 1,4-disubstituted 1,2,3-triazoles and C-5 regioselective arylation of 1-substituted 1,2,3-triazoles via sp 2 C-H activation with palladium as a catalyst and diaryliodonium salts as arylating reagents is described. Various electron-rich and electron-deficient substituents attached to triazoles and diaryliodonium salts were tolerable to give the desired products with good isolated yields in 24 hours under air atmosphere.
Bench-Stable 5-Stannyl Triazoles by a Copper(I)-Catalyzed Interrupted Click Reaction: Bridge to Trifluoromethyltriazoles and Trifluoromethylthiotriazoles
Wei, Fang,Zhou, Tong,Ma, Yudao,Tung, Chen-Ho,Xu, Zhenghu
supporting information, p. 2098 - 2101 (2017/04/27)
Metalated triazoles are the key reactive intermediate of the current click reaction (CuAAC). Bench-stable 5-stannyl triazoles are obtained by a copper-catalyzed interrupted click reaction of easily available terminal alkynes. Subsequent palladium-catalyze
