作者:Prakash B. Palde、Timothy F. Jamison
DOI:10.1002/anie.201006272
日期:2011.4.4
Safer flow: The synthesis of 5‐substituted tetrazoles in flow (see scheme) is safe, efficient, scalable, requires no metal promoter, and uses a near‐equimolar amount of NaN3, yet nonetheless displays a broad substrate scope. The hazards associated with HN3 are essentially eliminated, shock‐sensitive metal azides such as Zn(N3)2 are avoided, and residual NaN3 is quenched in‐line with NaNO2.
流动更安全:流动中5取代四唑的合成(参见方案)安全,高效,可扩展,不需要金属助催化剂,并且使用接近等摩尔的NaN 3量,但仍显示出广泛的底物范围。基本上消除了与HN 3相关的危害,避免了对冲击敏感的金属叠氮化物(如Zn(N 3)2),并通过NaNO 2在线淬灭了残留的NaN 3。