Journal
TETRAHEDRON LETTERS
Volume 41, Issue 45, Pages 8717-8721Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(00)01564-1
Keywords
Suzuki reaction; palladium-catalyzed cross coupling; 2,3-diarylindoles; indoxole
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A convenient, one-pot synthesis of 2,3-diarylindoles 4 is described via a bis-Suzuki palladium-catalyzed cross coupling of 2,3-dihalo-1-(phenylsulfonyl)indoles 1 with arylboronic acids 2, followed by cleavage of the N-protecting group to give 4. The anti-inflammatory drug indoxole (4c) is prepared in high yield. (C) 2000 Elsevier Science Ltd. All rights reserved.
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