A New One-Pot Synthetic Approach to the Highly Functionalized (<i>Z</i>)-2-(Buta-1,3-dienyl)phenols and 2-Methyl-2<i>H</i>-chromenes: Use of Amine, Ruthenium and Base-Catalysis
作者:Dhevalapally B. Ramachary、Vidadala V. Narayana、Kinthada Ramakumar
DOI:10.1002/ejoc.200800472
日期:2008.8
(Z)-2-(buta-1,3-dienyl)phenols 6 and 2-methyl-2H-chromenes 7 from simple starting materials was achieved for the first time through ring-closing metathesis/base-induced ring opening/[1,7]-sigmatropic hydrogen shift reactions. The synthesis of privileged (Z)-2-(buta-1,3-dienyl)phenols 6 via base-induced ring opening of highly functionalized benzo[b]oxepines 5 is described(© Wiley-VCH Verlag GmbH &
一种用于合成高度取代的苯并[b]氧杂环庚烷 5、(Z)-2-(buta-1,3-dienyl)phenols 6 和 2-methyl-2H-chromenes 7 的实用且简单的一锅多催化工艺首次通过闭环复分解/碱诱导开环/[1,7]-σ-σ 氢位移反应从简单的起始材料中获得。描述了通过碱诱导的高度官能化苯并 [b] 氧杂环庚烷 5 开环合成特权 (Z)-2-(buta-1,3-dienyl)phenols 6 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 魏因海姆,德国,2008)