期刊
TETRAHEDRON LETTERS
卷 46, 期 42, 页码 7213-7215出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2005.08.072
关键词
Heck cyclization; tethered cyclization; ester rotation barrier
Ether tethers allow Heck cyclizations to proceed in high yields. Ester tethers lead to low yields. Styrene trapping experiments indicate that ester reactions form viable organopalladium intermediates that cannot cyclize efficiently. (c) 2005 Elsevier Ltd. All rights reserved.
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