Journal
TETRAHEDRON LETTERS
Volume 58, Issue 2, Pages 163-167Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2016.11.122
Keywords
Annulation; Alkyne; Tetrasubstituted pyrrole; Microwave; Pentasubstituted pyrrole
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Funding
- National Science Foundation of China [21502013]
- Scientific and Technological Research Program of the Chongqing Municipal Education Commission [KJ1501111]
- Chongqing University of Arts and Sciences [R2015BX01]
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A La(OTf)(3) catalyzed synthesis of tetrasubstituted pyrroles under microwave irradiation has been developed affording various alpha-aryl tetrasubstituted pyrroles in acceptable to good yields (36-82% yield) through condensation/alkyne azacyclization/isomerization sequence. Functionalized alpha-aryl pentasubstituted pyrroles could be prepared from tetrasubstituted pyrroles through easy transformations. (C) 2016 Elsevier Ltd. All rights reserved.
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