Xanthate-Mediated Incorporation of Quaternary Centers into Heteroarenes
摘要:
The xanthate-mediated addition of tertiary alkyl radicals to heteroarenes enabled the easy functionalization of heteroaromatic rings as well as more decorated structures, such as marketed drugs or agrochemicals. This work provides a synthetic tool for efficiently exploring the chemical space by allowing late-stage diversification with a high tolerance toward functional groups.
S-Alkyl and S-acyl xanthates are valuable sources of alkyl and acylradicals which can be trapped inter- or intra-molecularly by various alkenes in a radical chain process.
Kinetic resolution of racemic pyrrolidine-2,5-diones using chiral oxazaborolidine catalysts
作者:Mike D. Barker、Rachel A. Dixon、Simon Jones、Barrie J. Marsh
DOI:10.1039/b800510a
日期:——
Kinetic resolution of racemic C-3 substituted pyrrolidine-2,5-diones has been achieved for the first time using highly efficient oxazaborolidine catalysts derived from cis-1-amino-indan-2-ol.