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A Typical NEDDA Cycloaddition Strategy between C-3- and N-Substituted Indoles and Butadienes Using Silica-supported Copper Triflate as an Efficient Catalytic System
The present paper elicits a [4+2] Diels-Alder cycloaddition strategy between C-3- and N-substituted indoles I-1 to I-6 with two dienes of different nucleophilicity using silica-supported Cu(OTf)2. Theoretical studies computed at the B3LYP/6-311G(d) level of theory reveal that all the indoles underta...
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Published in: | Chemistry letters 2016-07, Vol.45 (7), p.752-752 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | The present paper elicits a [4+2] Diels-Alder cycloaddition strategy between C-3- and N-substituted indoles I-1 to I-6 with two dienes of different nucleophilicity using silica-supported Cu(OTf)2. Theoretical studies computed at the B3LYP/6-311G(d) level of theory reveal that all the indoles undertaken behave as electron-poor dienophiles and, therefore, prefer to participate through a normal electron demand Diels-Alder (NEDDA) pathway. The analysis of the local reactivity descriptors further ascertained the completely regioselective outcome of the reaction profile. |
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ISSN: | 0366-7022 1348-0715 |