Modular radical cross-coupling with sulfones enables access to sp
<sup>3</sup>
-rich (fluoro)alkylated scaffolds
作者:Rohan R. Merchant、Jacob T. Edwards、Tian Qin、Monika M. Kruszyk、Cheng Bi、Guanda Che、Deng-Hui Bao、Wenhua Qiao、Lijie Sun、Michael R. Collins、Olugbeminiyi O. Fadeyi、Gary M. Gallego、James J. Mousseau、Philippe Nuhant、Phil S. Baran
DOI:10.1126/science.aar7335
日期:2018.4.6
A sulfur matchmaker for fluorous coupling Fluorination is a burgeoning technique for fine-tuning the properties of pharmaceutical compounds. Unfortunately, the cross-coupling reactions widely used to make carbon-carbon bonds in drug research can be tripped up by fluorine substituents. Merchant et al. report a class of easily prepared, solid sulfone compounds that engage in nickel-catalyzed coupling
Synthesis of 1,5-disubstituted tetrazoles via Suzuki–Miyaura cross-coupling of 5-chloro-1-phenyltetrazole
作者:Qing Tang、Ryan Gianatassio
DOI:10.1016/j.tetlet.2010.04.091
日期:2010.7
Suzuki–Miyaura coupling reactions of 5-chloro-1-phenyl-tetrazole with various functionalized arylboronic acids were investigated. In the presence of catalytic amounts of SPhos/Pd(OAc)2 or RuPhos/Pd(OAc)2, the reaction proceeded smoothly to afford 1,5-diaryltetrazoles in good to excellent yields.
regioselective synthesis of 1,5-disubstituted tetrazoles has been developed. By means of electrophilic amide activation, and further C–C bond cleavage and rearrangement, a diverse set of functionalized 1,5-DST derivatives were selectively constructed under mild conditions. As showcased in the mechanisms, the chemoselectivity is easily switched by the selection of the starting materials in the reaction.