The strong Bronsted basic character of N-heterocyclic carbenes (NHCs) has been used to promote the cascade double Michael addition between fluorenes and dienones. Under catalyst loadings of 1-5mol% of NHC, fluorene reacts with divinyl ketones (DVKs) to afford anti-spirofluorene compounds in high yields. However, when benzenedi(enones) were employed as Michael acceptors in the presence of 10mol% of NHC, fluorene undergoes a different inter- and intramolecular cascade double Michael addition, providing multi-substituted indanes in high yields with excellent diastereoselectivity.
机构:
Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R ChinaLanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Zhang, Hai-Rui
Dong, Zhen-Wen
论文数: 0引用数: 0
h-index: 0
机构:
Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R ChinaLanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Dong, Zhen-Wen
Yang, Yu-Jie
论文数: 0引用数: 0
h-index: 0
机构:
Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R ChinaLanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Yang, Yu-Jie
Wang, Ping-Luan
论文数: 0引用数: 0
h-index: 0
机构:
Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R ChinaLanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Wang, Ping-Luan
Hui, Xin-Ping
论文数: 0引用数: 0
h-index: 0
机构:
Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R ChinaLanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
机构:
Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China
Rong, Zi-Qiang
Jia, Min-Qiang
论文数: 0引用数: 0
h-index: 0
机构:
Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China
Jia, Min-Qiang
You, Shu-Li
论文数: 0引用数: 0
h-index: 0
机构:
Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China