Table 4.

The yields for the oligomerization reaction using the 4r catalyst.

Entry	Reaction time	Compound 5 yield (%)	Compound 6 yield (%)	Compound 7 yield (%)	FA conversion (%)
1	1 h	5.85	6.84	1.63	28.42
2	2 h	6.61	6.33	2.81	30.70
3	3 h	13.97	7.20	5.47	43.27
4	4 h	14.18	11.72	6.53	50.59
5	5 h	18.7	17.03	6.75	57.4
6	6 h	20.2	23.20	10.1	75.1
7	7 h	20.3	20.60	10.86	80.9
8	8 h	17.47	13.80	8.94	82.56
9	9 h	14.20	8.94	6.93	89.81
10	10 h	13.10	6.87	6.81	89.82

^*Reaction conditions: FA (10 mmol), catalyst 4r (0.01 equiv.), toluene (10 mL) and 100 °C. GC yield.