choride (TMSCl) brought about facile and regioselective reductive dimerization to give the corresponding bis(silyl enol ethers), 1,6-bis(trimethylsilyloxy)-1,5-dienes. Similar Mg-promoted reductive dimerization of 1,3-cyclic diketones in the presence of TMSCl followed by acid-catalyzed hydrolysis led to selective formation of the corresponding 1,6-diketo-2,4-dienes in moderate to good yields.
在三甲基甲
硅烷基
氯(TMSCl)存在下用Mg
金属处理α,β-不饱和酮可轻松实现区域选择性还原二聚,得到相应的双(甲
硅烷基烯醇醚),1,6-双(三甲基甲
硅烷氧基)-1,5 -dienes。在TMSC1存在下,类似的Mg促进的1,3-环二酮的还原还原二聚,然后酸催化的
水解导致以中等至良好的收率选择性地形成相应的1,6-二酮-2,4-二烯。