A copper(II)-catalyzed, sequential Michael addition-aldol condensation reaction of N-carboxybenzyl-protected aminobenzaldehyde with various alpha,beta-unsaturated N-acyl pyrroles is described. Substrate scope was found to include both aryl and aliphatic N-acyl pyrroles as the Michael acceptors, and isolated product yields as high as 93% were observed. The use of acetonitrile as the reaction solvent proved to be crucial for catalysis, both to function as a labile ligand for copper, as well as an agent to minimize hydrolytic catalyst poisoning. (C) 2011 Elsevier Ltd. All rights reserved.
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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
Zhu, Can
Ma, Shengming
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Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China
Fudan Univ, Dept Chem, Shanghai 200433, Peoples R ChinaChinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China
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Univ Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R ChinaUniv Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China
Wang, Qiang
Jiang, Bo
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Univ Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R ChinaUniv Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China
Jiang, Bo
Yu, Liu-Zhu
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Univ Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R ChinaUniv Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China
Yu, Liu-Zhu
Wei, Yin
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Univ Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R ChinaUniv Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China
Wei, Yin
Shi, Min
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Univ Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R ChinaUniv Chinese Acad Sci, Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China