用于催化： · 苯乙炔的均相甲氧基羰基化和加氢羧化反应。 · 亚甲基半缩醛的直接Friedel-Crafts反应。 · 路易斯酸性条件下的氨甲基化反应。 · Prins型环化反应。 · 乳酸直接缩聚。 · 阳离子苄基化反应。 · 羰基化合物的化学选择性硫缩醛化和反硫代缩醛化。 用于邻硝基甲苯一硝基化的可回收利用的优良催化剂。 Hafnium trifluoromethanesulfonate hydrate is an excellent recyclable catalyst for the mononitration of o-nitrotoluene Catalyst for: · Homogeneous methoxycarbonylation and hydrocarboxylation reactions of phenylacetylene. · Direct Friedel-Crafts reactions of chromene hemiacetals. · Aminomethylation reactions under Lewis acidic conditions. · Prins-type cyclization reactions. · Direct polycondensation of lactic acid. · Cationic benzylation reactions. · Chemoselective thioacetalization and transthioacetalization of carbonyl compounds. Excellent and recyclable catalyst for the mononitration of o-nitrotoluene. Hafnium trifluoromethanesulfonate hydrate is an excellent recyclable catalyst for the mononitration of o-nitrotoluene