Akanksha Babbar, Mohammad Saleem and Dongari Yadagiri*,
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Convergent Synthesis of Functionalized Indolines from Alkyl Aryl Tertiary Amines and Diazoesters via Visible Light-Driven [4 + 1]-Annulation Approach
We report the synthesis of functionalized indolines via α-amino radical/iminium ion through the visible-light-induced SET and HAT mediated [4 + 1]-annulation strategy between alkyl aryl tertiary amines and diazoesters. The unique role of diazoester in this process is as an oxidant for SET generation of aminium ions; it serves as a HAT reagent/deprotonation to form the α-amino radical/iminium ion, and is a reactant to access the functionalized indolines. Mechanistic studies support the proposed mechanism well, and the synthetic utility has also been demonstrated.
期刊介绍:
Organic Letters invites original reports of fundamental research in all branches of the theory and practice of organic, physical organic, organometallic,medicinal, and bioorganic chemistry. Organic Letters provides rapid disclosure of the key elements of significant studies that are of interest to a large portion of the organic community. In selecting manuscripts for publication, the Editors place emphasis on the originality, quality and wide interest of the work. Authors should provide enough background information to place the new disclosure in context and to justify the rapid publication format. Back-to-back Letters will be considered. Full details should be reserved for an Article, which should appear in due course.