A sequential procedure for the synthesis of 2,5-disubstituted thiazoles from terminal alkynes, sulfonyl azides, and thionoesters is reported. A copper(I)-catalyzed 1,3-dipolar cycloaddition of terminal alkynes with sulfonyl azides affords 1-sulfonyl-1,2,3-triazoles, which then react with thionoesters in the presence of a rhodium(II) catalyst. The resulting 3-sulfonyl-4-thiazolines subsequently aromatize
<i>N</i>-Imidazolylation of Sulfoximines from<i>N</i>-Cyano Sulfoximines, 1-Alkynes, and<i>N</i>-Sulfonyl Azides
作者:Sanghyuck Kim、Ji Eun Kim、Jinsub Lee、Phil Ho Lee
DOI:10.1002/adsc.201500636
日期:2015.11.16
The rhodium-catalyzed N-imidazolylation of N-sulfonyl-1,2,3-triazoles with a variety of N-cyano sulfoximines has been developed for the synthesis of N-imidazolyl sulfoximines via elimination of molecular nitrogen. Copper-catalyzed [3+2] cycloaddition followed by rhodium-catalyzed N-imidazolylation from 1-alkynes, N-sulfonylazides, and N-cyano sulfoximines is also demonstrated for the synthesis of N-imidazolyl
Herein, the rhodium(II)-catalyzed cyclopropanation reaction of pinacol allylboronate with N-sulfonyl-1,2,3-triazoles is reported. Boryl-substituted cyclopropylmethanamines are produced in a highly diastereo- and enantioselective manner. Various cyclopropylmethanamines containing a quaternary stereocenter are derivedfrom them.
Arylation of Rhodium(II) Azavinyl Carbenes with Boronic Acids
作者:Nicklas Selander、Brady T. Worrell、Stepan Chuprakov、Subash Velaparthi、Valery V. Fokin
DOI:10.1021/ja3062453
日期:2012.9.12
A highly efficient and stereoselective arylation of in situ-generated azavinyl carbenes affording 2,2-diaryl enamines at ambient temperatures has been developed. These transition-metal carbenes are directly produced from readily available and stable 1-sulfonyl-1,2,3-triazoles in the presence of a rhodium carboxylate catalyst. In several cases, the enamines generated in this reaction can be cyclized
申请人:KNU-Industry Cooperation Foundation 강원대학교산학협력단(220040088571) BRN ▼221-82-10213
公开号:KR101742226B1
公开(公告)日:2017-05-31
본 발명은 하기 화학식 1로 표시되는 새로운 N-이미다졸릴 설폭시민 유도체 및 이의 제조방법에 관한 것으로, 보다 상세하게는 화학식 2로 표시되는 N-시아노 설폭시민 유도체를 출발물질로 하여 제조된 N-이미다졸릴 설폭시민 유도체 및 이의 제조방법에 관한 것이다. [화학식 1] [화학식 2] 상기 화학식 1 및 2에서, R, R, R, R 및 R는 발명의 상세한 설명에서의 정의와 동일하다.