On January 1, 2021, Wang, Mengdan; Yang, Yajie; Yin, Liqiang; Feng, Ye; Li, Yanzhong published an article.Name: Methyl 2-cyclopentanonecarboxylate The title of the article was Selective Synthesis of Pyrano[3,2-b]indoles or Cyclopenta[b]indoles Tethered with Medium-Sized Rings via Cascade C-C σ-Bond Cleavage and C-H Functionalization. And the article contained the following:
Highly atom-economical tandem reactions have been developed for the synthesis of pyrano[3,2-b]indoles or cyclopenta[b]indoles tethered with 7-, 8-, or 9-membered rings. These reactions first undergo a carbon-carbon σ-bond cleavage reaction of cyclic β-ketoesters. Next, in the presence of CuCl2 and Ag2CO3, intramol. O-H/C-H coupling occurs to give pyrano[3,2-b]indoles. This is the first example for capture of the enoloxyl radical of the intramol. C-O bond formation reaction, whereas C3 nucleophilic addition afforded cyclopenta[b]indoles using TsOH·H2O. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Name: Methyl 2-cyclopentanonecarboxylate
The Article related to pyranoindole tethered ring preparation cascade cyclization alkynone cyclic ketone, cyclopenta indole tethered ring preparation cascade cyclization alkynone, Heterocyclic Compounds (One Hetero Atom): Pyrans and other aspects.Name: Methyl 2-cyclopentanonecarboxylate
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