期刊
TETRAHEDRON LETTERS
卷 49, 期 23, 页码 3782-3784出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.04.011
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A series of 6-(arylethynyl)purine derivatives are synthesized from the corresponding 6-halopurines via sequential and 'one-pot' Sonogashira-coupling reactions. The nature of the acetylene source was found to have a profound influence on the efficiency of the process. In sequential couplings, 2-methyl-but-3-yn-2-ol was found to be an efficient acetylene surrogate, while in the 'one-pot' reaction, 1-ethynylcyclohexanol gave superior results. (C) 2008 Elsevier Ltd. All rights reserved.
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