Efficient construction of indole rings from 2-ethynylaniline derivatives catalyzed by copper(II) salts and its application to the tandem cyclization reactions
The efficient cyclization reactions of the N-methanesulfonyl or N-ethoxycarbonyl derivatives of 2-ethynylanilines, functionalized on the benzene ring and/or the acetylene terminal into indoles catalyzed by either Cu(OTf)2 or Cu(OAc)2 are accomplished. The application of this reaction to the tandem cyclization reaction is also described.
Divergent Pd(ii) and Au(iii) mediated nitroalkynol cycloisomerizations
作者:Pitambar Patel、Chepuri V. Ramana
DOI:10.1039/c0ob00858c
日期:——
A new cycloisomerization reaction comprising the simultaneous addition of nitro and alcohol groups across CC leading to skeletally diverse small molecules is documented.