期刊
ACS OMEGA
卷 3, 期 2, 页码 1614-1620出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.7b01846
关键词
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资金
- DST-SERB [EMR/2016/003002]
- IISER Bhopal
Rollover C-H activation with transition-metal complexes has been found to be a difficult but viable pathway to functionalize potentially chelating molecules, which are otherwise reluctant to react further. However, selective rollover or nonrollover C-H activation pathway depends on the stereoelectronic demand of the associated organometallic intermediate(s). The presented work addresses the above issue on abnormal N-heterocyclic carbene (NHC) platform. Catalytic reactions of pyridine-imidazolium substrates with internal alkynes have been selectively guided toward either rollover or nonrollover C-H functionalization route via fulfilling the steric and electronic demands of the relevant rhodium(III)-abnormal NHC metallacyclic intermediates.
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