Benzyl<i>N</i>-Phenyl-2,2,2-trifluoroacetimidate: A New and Stable Reagent for O-Benzylation
作者:Yasunori Okada、Mamiko Ohtsu、Masafumi Bando、Hidetoshi Yamada
DOI:10.1246/cl.2007.992
日期:2007.8.5
A new O-benzylation reagent, benzyl N-phenyl-2,2,2-trifluoroacetimidate, has been developed. It even reacts with sterically hindered alcohols and base-sensitive hydroxy esters to afford the corresponding benzyl ethers catalyzed by TMSOTf in 1,4-dioxane. This reagent was more stable than benzyl 2,2,2-trichloroacetimidate, a known benzylation reagent.
一种新的 O 型苄基化试剂--N-苯基-2,2,2-三氟乙酰亚氨酸苄酯已经研制成功。在 1,4- 二氧六环中的 TMSOTf 催化下,它甚至能与立体受阻的醇和碱敏感的羟基酯发生反应,生成相应的苄基醚。这种试剂比已知的苄化试剂 2,2,2-三氯乙酰亚氨酸苄酯更加稳定。