... 155 CHIMIA 2004, 58, No. 3 ... In conclusion, perfluorinated NH-acidic imides 4 and CH-acidic methides 5 are ex- cellent catalysts for the synthesis of (all- rac)-α-tocopherol (3) from trimethylhydro- quinone (1) and isophytol (2). Best results were achieved by the application of ...