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. 2009 Sep 3;14(9):3411–3424. doi: 10.3390/molecules14093411

Table 1.

Optimized results of allylbenzene isomerization by KF/Al2O3.

1 1: (KF/Al2O3) (mol/mol) Method Aa Method Ba
Yieldb (Conv.,b time,c Pd) Selectivityb (%) Yieldb (Conv.,b time,c tempf) Selectivityb (%)
cis trans cis trans
1a 2 : 4 96(100, 11, 630) 15 85 99 (100, 2.5, 140) 10 90
1b 2 : 10 94 (100, 13, 400) 14 86 96 (100, 3.5, 150) 13 87
1c 2 : 4 96 (99, 15, 400) 16 83 99 (100, 2.5, 140) 13 87
1d 2 : 8 96 (96, 6, 630) 19 77 98 (100, 2.5, 150) 12 88
1e 2 : 40 97 (97, 9, 80) a 6 91 77 (78, 1.3, 203)a∗∗ 11 67

a Method A: The reaction was assisted by microwave irradiation under solvent-free conditions; Method B: The reaction was assisted by heating in an oil bath under solvent-free conditions; a Method A1: The reaction was assisted by microwave irradiation under heterogeneous conditions; a∗∗ Method B1: The reaction was assisted by heating in an oil bath under heterogeneous conditions; b Yield, Conv. (conversion yield), and Selectivity were determined by GC/MS; c time = reaction time in minutes; c time = reaction time in hours; d P = power of microwave oven (W); f temp = oil bath temperature (°C).