Application of recyclable ionic liquid-supported imidazolidinone catalyst in enantioselective Diels–Alder reactions

• Main Authors: Shen, Zhi-Liang, Cheong, Hao-Lun, Lai, Yin-Chang, Loo, Wan-Yi, Loh, Teck-Peng
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/100554; http://hdl.handle.net/10220/16292
• Institution: Nanyang Technological University

The application of ionic liquid-supported imidazolidinone catalyst I in enantioselective Diels–Alder reactions was investigated. The Diels–Alder reactions involving α,β-unsaturated aldehydes and cyclopentadiene proceeded efficiently in the presence of catalyst I to provide the desired products in moderate to good yields with good to excellent enantioselectivities. Especially noteworthy, catalyst I can be recovered and reused for up to five runs while maintaining its high catalytic activity.