Reaction of aryl- or heteroarylboronicacids with aldehydes, in the presence of PdCl2 and P(1-Nap)3, afforded carbinol derivatives in good to excellent yields. The efficiency of this reaction was demonstrated by the compatibility with nitro, cyano, acetamido, acetoxy, acetyl, carboxyl, trifluoromethyl, fluoro, and chloro groups and the possibility of involving aliphatic aldehyde or hindered substrates
Triflimide-catalyzed allylsilane annulations of benzylic alcohols for the divergent synthesis of indanes and tetralins
作者:Jordan C. T. Reddel、Weiwei Wang、Kalli Koukounas、Regan J. Thomson
DOI:10.1039/c6sc04762a
日期:——
development of a triflimide-catalyzed annulation of benzylic alcohols with allylsilanes for the synthesis of indane or tetralin structures is reported. In this fragment coupling reaction, complexity is built rapidly from readily available starting materials to yield diverse sets of products with up to three contiguous stereocenters. Indanes or tetralins can be generated from common precursors depending
Micro-flow heteroatom alkylation <i>via</i> TfOH-mediated rapid <i>in situ</i> generation of carbocations and subsequent nucleophile addition
作者:Yuma Matsuura、Shinichiro Fuse
DOI:10.1039/d3cc06308a
日期:——
A rapid nucleophilic substitution reaction was developed using carbocations generated from diarylmethanol and trifluoromethanesulfonic acid. Undesired reactions caused by the carbocations were suppressed, presumably due to the rapid and uniform generation of carbocations and the subsequent rapid and uniform distribution of nucleophiles by the micro-flow technology.