Table 2. N-Substituted Pyrrole Formation by Dehydrogenative Coupling of Alcohols and Ammoniaa.


Reaction conditions: Catalyst 1 (0.01 mmol), 2,5-hexanediol (1 mmol), primary alcohol (2 mmol), ammonia (7 bar) 150 °C, 24 h, toluene (0.5 mL), NMR yield with mesitylene as internal standard.
Primary alcohol (4 mmol).
1,4-Butanediol (1 mmol).
1-Phenyl-1,4-pentanediol (1 mmol).
1,4-Diphenyl-1,4-butanediol (1 mmol).