Unsymmetrical alkenes by carbene coupling from diazirine decomposition in the presence of diazo compounds
作者:Michael P. Doyle、Alvaro H. Devia、Kathlene E. Bassett、Jan W. Terpstra、Surendra N. Mahapatro
DOI:10.1021/jo00384a049
日期:1987.4
DOYLE M. P.; DEVIA A. H.; BASSETT K. E.; TERPSTRA J. W.; MAHAPATRO S. N., J. ORG. CHEM., 52,(1987) N 8, 1619-1621
作者:DOYLE M. P.、 DEVIA A. H.、 BASSETT K. E.、 TERPSTRA J. W.、 MAHAPATRO S. N.
DOI:——
日期:——
Metal-free, Regio-, and Stereo-Controlled Hydrochlorination and Hydrobromination of Ynones and Ynamides
作者:Xiaojun Zeng、Zhichao Lu、Shiwen Liu、Gerald B. Hammond、Bo Xu
DOI:10.1021/acs.joc.7b02257
日期:2017.12.15
We developed an atom-economical and metal-free method for the regio- and stereo-selective hydrohalogenation of ynones and ynamides using easy to handle DMPU/HX (X = Br or Cl) reagents. The reaction operates under mild conditions and a range of functional groups is well tolerated. We propose that the hydrohalogenation of ynones gives the anti-addition products via a concerted multimolecular AdE3 mechanism