Cu-catalyzed selective cascade sp<sup>3</sup> C–H bond oxidative functionalization towards isoxazoline derivatives
作者:Gang-Wei Wang、Ming-Xing Cheng、Ran-Song Ma、Shang-Dong Yang
DOI:10.1039/c5cc01004g
日期:——
sp(3) C-H bond oxidative functionalization of the 2-ethylazaarenes has been developed. The two different sp(3) C-H bonds in 2-ethylazaarenes are selectively oxidized and four new types of bonds (C=O, C=N, C-C, C-O) are constructed in one operation. Starting from the simple substrates and cheap nitro source, this reaction provides an efficient approach to produce new kinds of isoxazolines.
Friedländer-type condensation of aminonaphthalene carbaldehydes with (1) primary or secondary alcohols mediated by urea/KOH or with (2) diketones or β-ketoesters is described. The behavior of naphthalene derivatives in the Friedländer annulation, resulted in the formation of Friedländer or non-Friedländer products, is also presented. Graphical abstract
Traceless Directing-Group Strategy in the Ru-Catalyzed, Formal [3 + 3] Annulation of Anilines with Allyl Alcohols: A One-Pot, Domino Approach for the Synthesis of Quinolines
A unique, ruthenium-catalyzed, [3 + 3] annulation of anilines with allyl alcohols in the synthesis of substituted quinolines is reported. The method employs a traceless directing group strategy in the proximal C–H bond activation and represents a one-pot Domino synthesis of quinolines from anilines.