期刊
TETRAHEDRON
卷 58, 期 8, 页码 1607-+出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(02)00025-X
关键词
alkynes; oxidation with PdCl2-DMSO; 1,2-diketones
Oxidation of the triple bond in 4-alkynylpyrazoles 2a-e and acetylenic derivatives of the crown-ethers 7a,b with PdCl2-DMSO has been carried out to give unsymmetrical hetaryl-1,2-diketones 3a-e; 8a,b. Attempts to oxidize the triple bond in 5-alkynylpyrazole 6 and alkynylpyridines 5a,b and 9 failed. (C) 2002 Elsevier Science Ltd. All rights reserved.
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