期刊
TETRAHEDRON LETTERS
卷 48, 期 18, 页码 3209-3212出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2007.03.018
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Zirconocene catalyzed cyclization of 2-(5-methoxy-3-penten-1-yl)styrene in the presence of organomagnesium reagents was studied. The cyclization proceeded in high isolated yields (up to 84%) with excellent trans-selectivity (> 98%), which is unusual for the formation of cyclohexane derivatives. Catalytic cyclization in the presence of Cp2ZrCl2 proceeded as well with similar results. The reaction with (R,R)-(EBTHI)(2)ZrCl2 gave a cis/trans mixture of 5 in low yield and poor ee. (c) 2007 Elsevier Ltd. All rights reserved.
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