Table 1. Effect of Metal Co-catalyst on the Reduction of n-Heptylbenzene.

entry	catalyst	additive	1a/2aa (mol/mol)
1	10% Pt/C		no reaction
2	10% Pt/C	Fe	0/100 (98)b
3	10% Pt/C	Zn	76/24
4	10% Pt/C	Co	89/11
5	10% Pt/C	Ni, Cr, Cu, Al, or Mg	no reaction
6	10% Pt/C	FeO	33/67
7	10% Pt/C	Fe2O3	25/75
8	10% Pd/C	Fe	no reaction
9	10% Rh/C	Fe	no reaction
10		Fe	no reaction
11c	10% Pt/C	Fe	47/53
12d	10% Pt/C	Fe	no reaction
13e	10% Pt/C	Fe	0/100 (97)b

^aRatio was determined by ¹H NMR.

^bIsolated yield.

^cAt 80 °C.

^dAt 50 °C.

^e7.4 mmol of 1a (1.3 g) was used as a substrate.