Journal
TETRAHEDRON LETTERS
Volume 50, Issue 18, Pages 2060-2064Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2009.02.106
Keywords
Aqueous medium; Ultrasound irradiation; Hetero-Michael reaction; Thiols; Amines; 4-Hydroxy-2-alkynoates
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Funding
- University of L'Aquila (Italy)
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This Letter describes an alternative protocol for the Michael addition of thiols to 4-hydroxy-2-alkynoates. The reaction proceeds at room temperature in water under ultrasound irradiation. With amines instead of thiols a sequential conjugate addition/lactonization reaction leads to important 4-amino-furan-2-one derivatives. (c) 2009 Elsevier Ltd. All rights reserved.
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