Selective Conversion of Benzylic Phosphates into Diarylmethanes Through Al(OTf)<sub>3</sub>
-Catalyzed Friedel-Crafts-Type Benzylation
作者:Taiga Yurino、Asuka Hachiya、Keisuke Suzuki、Takeshi Ohkuma
DOI:10.1002/ejoc.202000077
日期:2020.4.23
Al(OTf)3 exhibits superior catalyst performance in the Friedel–Crafts‐type benzylation using benzylic phosphate as an electrophile. The reaction can be conducted even with 0.2 mol‐% of the catalyst. Twenty‐one different diarylmethanes are formed. The chemoselective property of the catalyst toward the phosphate group over acetate and bromide is noteworthy.
Al(OTf)3在使用磷酸苄基酯作为亲电试剂的Friedel-Crafts型苄基化反应中表现出优异的催化剂性能。即使使用0.2 mol%的催化剂也可以进行反应。形成二十一种不同的二芳基甲烷。值得注意的是,催化剂对乙酸根和溴离子的磷酸根的化学选择性。