Thermal azide–alkene cycloaddition reactions: straightforward multi-gram access to Δ<sup>2</sup>-1,2,3-triazolines in deep eutectic solvents
作者:Filip Sebest、Luis Casarrubios、Henry S. Rzepa、Andrew J. P. White、Silvia Díez-González
DOI:10.1039/c8gc01797b
日期:——
The multi-gram synthesis of a wide range of 1,2,3-triazolines via azide–alkene cycloaddition reactions in a Deep Eutectic Solvent (DES) is reported. The role of DES in this transformation as well as the origin of the full product distribution was studied with an experimental/computational-DFT approach.
atom-efficient nitrenetransfer reagents in the (porphyrin)ruthenium-catalyzed amination of olefins. Several azides, olefins and [Ru(porphyrin)CO] complexes were tested to investigate the scope and limits of the reaction. Quantitative yields and short reaction times were achieved by using terminal olefins and aryl azides bearing electron-withdrawing groups on the aryl moiety. The reactions were influenced
作者:Kamaraj Sriraghavan、Vayalakkavoor T. Ramakrishnan
DOI:10.1081/scc-100103544
日期:2001.1
Reaction of N-aryl-beta -amino alcohols with p-toluenesulphonyl chloride under phase transfer catalytic condition gave the corresponding N-aryl aziridines in good yields, whereas N-alkyl-beta -amino alcohol [for e.g., L-ephedrine] gave the corresponding N-tosyl derivative as the major product, along with the expected N-alkyl aziridines in lower yield.
[EN] METAL PORPHYRIN CATALYZED OLEFIN AZIRIDINATION WITH SULFONYL AZIDES<br/>[FR] AZIRIDINATION D'OLÉFINES CATALYSÉE PAR UNE PORPHYRINE MÉTALLIQUE AVEC DES SULFONYLAZIDES
申请人:UNIV SOUTH FLORIDA
公开号:WO2009146032A2
公开(公告)日:2009-12-03
Cobalt(II) complex of P1 [Co(P1)], a new porphyrin that was designed on the basis of potential hydrogen bonding interactions in the metal-nitrene intermediate, is a highly active catalyst for olefin aziridination with azides. The [Co(P1)]- based system can be effectively employed for different combinations of aromatic olefins and arysulfonyl azides, synthesizing various sulfonylated aziridines in excellent yields. Besides its mild catalytic conditions, the Co-catalyzed aziridination process enjoys several attributes associated with the relatively low cost of cobalt and widely accessible arylsulfonyl azides. Furthermore, it generates stable dinitrogen as the only by-product.
An Efficient Aziridination of Styrenes Promoted by Visible Light
作者:Akichika Itoh、Kazuki Matsuzawa、Yoshitomo Nagasawa、Eiji Yamaguchi、Norihiro Tada
DOI:10.1055/s-0035-1561635
日期:——
presence of potassium carbonate and iodine in CHCl3 under visiblelight irradiation to produce the corresponding aziridines in moderate to good yields. A reaction mechanism to explain the formation of aziridines is also proposed. Styrenes reacted with sulfonamide in the presence of potassium carbonate and iodine in CHCl3 under visiblelight irradiation to produce the corresponding aziridines in moderate