Facile Synthesis and Ring-Opening Cross Metathesis of Carbo- and Heterocyclic Bicyclo[3.2.1]oct-6-en-3-ones Using Gaseous Olefinic Reaction Partners
作者:Marko D. Mihovilovic、Birgit Grötzl、Wolfgang Kandioller、Radka Snajdrova、Adél Muskotál、Dario A. Bianchi、Peter Stanetty
DOI:10.1002/adsc.200505375
日期:2006.3
were prepared by a facile [4+3]-cycloaddition strategy involving sonochemistry. The oxyallyl species required for the reaction with the corresponding diene was generated from a suitable perbromo ketone with activated zinc under sonification conditions. The resulting dibromo bicyclo compounds were reduced to the target products using a Cu/Zn couple. Ring-opening cross metathesis of the resulting bicyclic
通过涉及声化学的简便的[4 + 3]-环加成策略制备标题化合物。与合适的二烯反应所需的羟基烯丙基物质是在超声条件下由合适的具有活化锌的全溴酮生成的。使用Cu / Zn对将所得的二溴双环化合物还原为目标产物。建立了所得双环物质的开环交叉复分解反应,作为非对映选择性制备顺-3,5-二取代环酮的有效方法。尤其是气态烯烃会给出对称和不对称的产物,作为后续转化的通用平台。这是非应变环系统的这种开环反应的第一个例子。