Abstract

In this paper, we describe a useful Mannich-type reaction in fluorous phase. By use of perfluorodecalin (C 10F 18, cis- and trans-mixture) as a fluorous solvent and perfluorinated rare earth metal salts such as Sc(OSO 2C 8F 17) 3 or Yb(OSO 2C 8F 17) 3 (2.0 mol%) as a catalyst, the Mannich-type reaction of arylaldehydes with aromatic amines and (1-methoxy-2-methylpropenyloxy)trimethylsilane can be performed for many times without reloading the catalyst and the fluorous solvent.

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