期刊
TETRAHEDRON LETTERS
卷 45, 期 44, 页码 8137-8140出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2004.09.056
关键词
tetrahydro-beta-carbolinediketopiperazine; ionic liquid; microwave-assisted organic reaction
Because of their negligible vapor pressures and large dipoles, ionic liquids are excellent media for microwave-accelerated organic reactions. Using low-power microwave irradiation in the new [bdmim][PF6] ionic liquid with temperature controlled at 60degreesC, a three-step synthesis (Pictet-Spengler, Schotten-Baumann, and intramolecular ester amidation) of tetraliydro-beta-carboline-diketopiperazines starting from tryptophan methyl ester was achieved with good isolated yields (49-69%) in only 5 min. (C) 2004 Elsevier Ltd. All rights reserved.
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