Reaction of (<i>Z</i>)-1-Aryl-3-hexen-1,5-diynes with Sodium Azide: Synthesis of 1-Aryl-1<i>H</i>-benzotriazoles
作者:Zhong-Yi Chen、Ming-Jung Wu
DOI:10.1021/ol047563q
日期:2005.2.1
[reaction: see text] A novel tandem cascade reaction involving 1,3-dipolar cycloaddition reaction, anionic cyclization, and sigmatropic rearrangement for the synthesis of 1-aryl-1H-benzotriazoles 2 and 3 was accomplished by treatment of the (Z)-1-aryl-3-henen-1,5-diynes (1) with sodium azide in DMF or DMSO at 80 degrees C for 12 h and gives 65-91% yields.
[反应:参见正文]通过(Z)-的处理,完成了涉及1,3-偶极环加成反应,阴离子环化和σ重排的新型串联级联反应,用于合成1-芳基-1H-苯并三唑2和3。 1-芳基-3-henen-1,5-二炔(1)与叠氮化钠在DMF或DMSO中在80摄氏度下反应12小时,收率65-91%。