Fig. 3: Reaction mechanism.
From: Selective hydrodeoxygenation of α, β-unsaturated carbonyl compounds to alkenes

a The relationship between Lewis acidic site (LAS) density of ZnNC-X catalysts and the conversion of cinnamaldehyde hydrogenation to cinnamyl alcohol. b Mass fragmentation analysis of the products. The blue is the mass spectrum of pure cinnamyl alcohol; the red is the mass spectrum of the reaction product. Reaction conditions: cinnamaldehyde (0.2 mmol), ZnNC-900 (20 mg), 2-propanol-d8 (1 mL), t-butanol, 150 °C, 11 h, N2 (1 MPa). The molar ratio of 2-propanol-d8 to t-butanol is 1:3. c Reaction mechanism for the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol.