Direct allylation of benzyl alcohols, diarylmethanols, and triarylmethanols mediated by XtalFluor-E
作者:Thomas Lebleu、Jean-François Paquin
DOI:10.1016/j.tetlet.2016.12.056
日期:2017.2
We report the direct allylation of benzylalcohols, diarylmethanols and triarylmethanols mediated by XtalFluor-E using allyltrimethylsilane. The resulting allylated products are obtained in moderate to high yield.
Promoter free allylation of trichloroacetimidates with allyltributylstannanes under thermal conditions to access the common 1,1′-diarylbutyl pharmacophore
作者:Nivedita S. Mahajani、John D. Chisholm
DOI:10.1039/c8ob00687c
日期:——
found in many biologically active small molecules. To access these systems under mild conditions, the reaction of diarylmethyl trichloroacetimidates with allyltributylstannanes was explored. Simply heating allyltributylstannane with the trichloroacetimidate resulted in substitution of the imidate with an allyl group. Unlike other methods used to access these systems, no strong base, transition metal catalyst
Unified synthesis of multiply arylated alkanes by catalytic deoxygenative transformation of diarylketones
作者:Miki B. Kurosawa、Kenta Kato、Kei Muto、Junichiro Yamaguchi
DOI:10.1039/d2sc03720c
日期:——
diarylketones leading to multiply arylated alkanes was developed. Diarylketones were reacted with diphenylphosphine oxide resulting in a phospha-Brook rearrangement, followed by palladium-catalyzed cross-couplings or a Friedel–Crafts type alkylation to afford the corresponding multiply arylated alkanes. A variety of diarylketones can be converted to multiply arylated alkanes such as diarylmethanes, tetraarylethanes
Direct allylation of α-aryl alcohols with allyltrimethylsilane catalyzed by heterogeneous tin ion-exchanged montmorillonite
作者:Jiacheng Wang、Yoichi Masui、Makoto Onaka
DOI:10.1016/j.tetlet.2010.04.074
日期:2010.6
The direct allylation of alpha-aryl alcohols with allyltrimethylsilane efficiently proceeded in the presence of tin ion-exchanged montmorillonite under mild conditions according to the proper addition order of reactants and a catalyst. (C) 2010 Elsevier Ltd. All rights reserved.