Stanford大学教授P .A .Wender的实验室发现了一种金属催化环加成反应。他们发现在有些金属催化的 [6 +2 ]环加成反应中 ,有一个副产物是由 [6 +2 - 1]过程生成的七元环化合物。Wender立即想到 ,[5 +2 ]反应可能会通过 [5 +2 +1]过程生成八元环。他们在一个铑催化的反应中证实? Stanford University professor P.A.Wender’s lab uncovered a metal-catalyzed cycloaddition reaction. They found that in some metal-catalyzed [6 + 2] cycloaddition reactions, a byproduct is a seven-membered ring formed by the [6 + 2-1] process. Wender immediately thought that the [5 + 2] reaction might generate an eight-membered ring through the [5 + 2 +1] process. Are they confirmed in a rhodium catalyzed reaction?