Light-induced stereospecific intramolecular [2+2]-cycloaddition of atropisomeric 3,4-dihydro-2-pyridones
作者:Elango Kumarasamy、J. Sivaguru
DOI:10.1039/c2cc37123e
日期:——
Atropisomeric 3,4-dihydro-2-pyridones undergo stereospecific [2+2]-photocycloaddition in solution with high stereoselectivity (ee > 98% and de > 96%) in the product. The chiral transfer during phototransformation was rationalized based on the stability/reactivity of the biradical.
具有固定构型的3,4-二氢-2-吡啶酮在溶液中经历立体特异性的[2+2]-光环加成反应,表现出高度的立体选择性(产物的对映体过量值大于98%,非对映体过量值大于96%)。光转化过程中的手性传递可以基于双自由基的稳定性/反应性来解释。