Efficient and selective reduction of α-pinene to cis-pinane by NaBH₄ using NiCl₂•6H₂O/PEG-800/ethanol as the catalytic system

Abstract

The reduction of α-pinene by NaBH₄ was achieved using NiCl₂•6H₂O in PEG-800/ethanol system under room temperature. Under the optimized conditions, the conversion of α-pinene and the selectivity of cis-pinane reached 97% and 98%, respectively. On the basis of TEM and a series of poisoning experiments, the nature of the active catalytic species for the reaction was discussed.

Graphical Abstract

Keywords:

• α-pinene
• selective reduction
• NaBH4
• Ni nanoparticles
• PEGs

Additional information

Funding

This work was supported by Shandong Provincial Natural Science Foundation (ZR2018QEM003), Project of Shandong Province Higher Educational Science and Technology Program (J17KA117) and Weifang Science & Technology Development Plan (2018GX002).