Probing the Scope of the Amidine-1,2,3-triazine Cycloaddition as a Prospective Click Ligation Method
作者:Sebastian J. Siegl、Milan Vrabel
DOI:10.1002/ejoc.201800530
日期:2018.10.9
The amidine–1,2,3‐triazine cycloaddition was studied as a click ligation method. A new protocol for base‐promoted in situ formation of free amidine bases undergoing cycloaddition with 1,2,3‐triazines is reported. The reaction shows excellent orthogonality to strain‐promoted azide–alkyne cycloadditions or trans‐cyclooctene–1,2,4,5‐tetrazine cycloadditions. Limitations and advantages of the reaction
a1,2,3-三嗪环加成反应是一种点击连接法。报道了一种新的协议,该协议用于与1,2,3-三嗪进行环加成反应的游离am碱的碱促进原位形成。该反应与应变促进的叠氮化物-炔烃环加成反应或反式-环辛烯-1,2,4,5-四嗪环加成反应显示出优异的正交性。公开了反应的局限性和优点。