Table 2.

Hydrogenation of different diene and triene substrates using C8 PdNP^a

Substrate	1,2-Add	Yield (%)	1,4-Add	Yield (%)	1,4-Add/1,2-add
1	1a	9	1b	91	10.4
2	2a	7	2c	93	14.2
	2b	0
3b	3a	92c E/Z = 4.0	3a	—	—
	3b	8
4	4a	29	4c	71 E/Z = 3.5	2.4
	4b	0
5b	5a	90c	5a	—	—
	5b	7
6b	6a	90c	6a	—	—
	6b	5
7	7a	41	7c	59	1.5
	7b	0
8	8a	3	7c	69	3.0
	8b	20

^aReaction conditions: 0.5 mmol diene, 5 mol% Pd catalyst, 2.5 mL CDCl₃, 1 atm H₂, 24 h reaction. Yields were obtained by 400 MHz ¹H NMR.

^bThe catalytic reaction of this substrate yields the same product after 1,2- and 1,4-addition reactions.

^cThis yield is the combination of both 1,2- and 1,4-addition reactions.