Alkene Trifluoromethylation-Initiated Remote α-Azidation of Carbonyl Compounds toward Trifluoromethyl γ-Lactam and Spirobenzofuranone-Lactam
作者:Lin Huang、Jin-Shun Lin、Bin Tan、Xin-Yuan Liu
DOI:10.1021/acscatal.5b00311
日期:2015.5.1
antibacterial armeniaspirole from readily available acyclic precursors was developed. The key point of this transformation was the concurrent incorporation of CF3 and azide into the alkene and remote carbonyl α-C–H position via carbonyl-stabilized radical intermediate triggered by alkene trifluoromethylation via a 1,5-H shift in a highly controlled site-selective manner. Furthermore, gram-scale synthesis
开发了第一个前所未有的单锅多米诺骨牌策略,旨在从容易获得的无环前体中分离出各种含CF 3的抗菌亚美尼亚螺的γ-内酰胺和螺苯并呋喃酮-内酰胺支架。该转变的关键点在于,CF 3和叠氮化物通过羰基稳定的自由基中间体同时并入烯烃和较远的羰基α-C–H位置,该中间体是由烯烃的三氟甲基化反应通过在一个高度受控的位置发生1,5–H移位而触发的选择性的方式。此外,证明了这些化合物的克级合成和合成适用性。