Sensitive nature of ligand coupling and pseudorotation to electronic effect of substituent---ligand coupling in the reactions of benzylic aryl sulfoxides with benzylic Grignard reagents
Unlike the reaction of benzylic 2-pyridyl sulfoxides with benzylic Grignardreagents, in the reaction of p-benzenesulfonylphenyl benzylic sulfoxides with benzylic Grignardreagents, benzylic groups bearing an electron-withdrawing group tends to couple with the aryl group preferentially. This change is considered to be due to a slight change of electronic environements which would effect on the ease
Versatile C(sp<sup>2</sup>)−C(sp<sup>3</sup>) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes
作者:William M. Dean、Mindaugas Šiaučiulis、Thomas E. Storr、William Lewis、Robert A. Stockman
DOI:10.1002/anie.201602264
日期:2016.8.16
The reaction of chiral (hetero)aryl benzyl sulfoxides with Grignard reagents affords enantiomerically pure diarylalkanes in up to 98 % yield and greater than 99.5 % enantiomeric excess. This ligand coupling reaction is tolerant to multiple substitution patterns and provides access to diverse areas of chemical space in three operationally simple steps from commercially available reagents. This strategy
A Sulfoxide Reagent for One‐Pot, Three‐Component Syntheses of Sulfoxides and Sulfinamides**
作者:Fumito Saito
DOI:10.1002/anie.202213872
日期:2022.12.23
Upon Grignard reactions, a simple sulfoxide reagent allows the formation of sulfenate anions that are subsequently transformed into sulfoxides and sulfinamides. This one-pot, three-component method does not require substrates with preinstalled sulfur functional groups.