Exploring Tandem Ruthenium-Catalyzed Hydrogen Transfer and S<sub>N</sub>Ar Chemistry
作者:Kurt Polidano、Benjamin G. Reed-Berendt、Anaïs Basset、Andrew J. A. Watson、Jonathan M. J. Williams、Louis C. Morrill
DOI:10.1021/acs.orglett.7b03441
日期:2017.12.15
A hydrogen-transfer strategy for the catalytic functionalization of benzylic alcohols via electronic arene activation, accessing a diverse range of bespoke diaryl ethers and aryl amines in excellent isolated yields (38 examples, 70% average yield), is reported. Taking advantage of the hydrogen-transfer approach, the oxidation level of the functionalized products can be selected by judicious choice
Three-step synthesis of an array of substituted benzofurans using polymer-supported reagents
作者:Jörg Habermann、Steven V. Ley、René Smits
DOI:10.1039/a904384e
日期:——
achieved by the bromination of acetophenones to α-bromoacetophenones by polymer-supported pyridiniumbromideperbromide (PSPBP). The subsequent clean substitution of the obtained bromides by phenols using 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD-P) and cyclodehydration of the resulting α-phenoxyacetophenones using Amberlyst 15, affords pure products without the need for any chromatographic purification
A Practical and Efficient Route for the Highly Enantioselective Synthesis of Mexiletine Analogues and Novel β-Thiophenoxy and Pyridyl Ethers
作者:Kun Huang、Margarita Ortiz-Marciales、Viatcheslav Stepanenko、Melvin De Jesús、Wildeliz Correa
DOI:10.1021/jo801181d
日期:2008.9.1
A practical and efficient procedure for the enantioselective synthesis of mexiletine analogues with use of 10% of spiroborate ester 6 as chirality transfer agent is presented. A variety of mexiletine analogues were prepared in good yield with excellent enantioselectivities (91−97% ee) from readily available starting materials. The developed methodology was also successfully applied for the synthesis