Table 1 Acceptorless dehydrogenation of 1,2,3,4-tetrahydroquinoline (1a)

From: Iron-based nanocatalyst for the acceptorless dehydrogenation reactions

Entry Catalyst Conversion (%)a Yield (%)a
1 Fe-Phenb Trace Trace
2 Fe-Phen@EGOc 20 16
3 Fe@EGO 17 15
4 Phen@EGO 6 Trace
5 Fe-L1@EGO-400 40 37
6 Fe-L1@EGO-600 52 45d
7 Fe-L1@EGO-900 98 92 (88)d
8 Fe-L2@EGO-900 51 40
9 Fe-L3@EGO-900 30 22
10 0 0
11 Fe-L1@Al2O3-900 23 19
12 Fe-L1@SiO2-900 15 11
13 Fe-L1@CeO2-900 8 Trace
14 Fe-L1@TiO2-900 27 16
  1. Reaction conditions: 1a (0.5 mmol), cat. Fe-L1@EGO-900 (8 mol%), t-BuOK (10 mol%), and mesitylene (2 mL) heated at 145 °C
  2. aYields of 2a and conversion of 1a were determined by gas chromatography (GC)
  3. bReaction under homogeneous conditions using the in situ-generated Fe catalyst
  4. cNon-pyrolyzed materials
  5. dIsolated yield