Scandium(III) Trifluoromethanesulfonate Catalyzed Aromatic Nitration with Inorganic Nitrates and Acetic Anhydride.
作者:Atsushi Kawada、Shigemitsu Takeda、Kazumi Yamashita、Hitoshi Abe、Takashi Harayama
DOI:10.1248/cpb.50.1060
日期:——
aromatic nitration with carboxylic anhydride-inorganic nitrate as the nitrating agent. In the presence of a catalytic amount of RE(OTf)3, the nitration of substituted benzenes proceeded to afford the corresponding nitrobenzenes. Especially, scandium(III) trifluoromethanesulfonate (scandium(III) triflate, Sc(OTf)3) is the most active catalyst among our tested Lewis acids. It was also found that acetic anhydride-Al(NO3)
发现稀土金属(III)三氟甲磺酸盐(稀土金属(III)三氟甲磺酸盐,RE(OTf)3)是用羧酸酐-无机硝酸盐作为硝化剂进行芳族硝化的有效催化剂。在催化量的RE(OTf)3存在下,进行取代苯的硝化反应,得到相应的硝基苯。尤其是,三氟甲磺酸scan(III)(三氟甲磺酸,(Sf(OTf)3))是我们测试过的路易斯酸中活性最高的催化剂。还发现乙酸酐-Al(NO3).9H2O是该系统中最活跃的硝化剂。