Metal-Free Diaryl Etherification of Tertiary Amines by <i>Ortho</i>-C(sp<sup>2</sup>)–H Functionalization for Synthesis of Dibenzoxazepines and -ones
作者:Vellekkatt Jamsheena、Chikkagundagal K. Mahesha、M. Nibin Joy、Ravi S. Lankalapalli
DOI:10.1021/acs.orglett.7b03328
日期:2017.12.15
A phenyliodine(III) diacetate mediated umpolung reactivity of the tertiary amines with suitably substituted o-hydroxybenzyl and phenyl groups is exploited to facilitate o-C(sp2)–H functionalization to afford diaryl ethers. The presence of an o-CHO and secondary amine functionalities in the resulting diaryl ether, generated in situ, were utilized for synthesis of dibenzoxazepines and dibenzoxazepinones