期刊
SYNLETT
卷 25, 期 19, 页码 2738-2742出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0034-1379219
关键词
N-heterocyclic carbenes; hydroalkenylation; nitrate additive; unsaturated ethers; nickel hydride
资金
- HK PhD Fellowship
- NSFC [21102122]
- SUSTC
- CUHK SZRI
- [GJHS20120702105523302]
The first tail-to-tail vinyl ether dimerization has been developed by using a newly identified synergistic effect between the NHC-NiH catalyst and organonitrate additive (PhNO2 or t-BuNO2). The additive enhanced the desired C-C bond-forming reactivity by a proposed competitive coordination with the alkoxyl group of the hydrometallated vinyl ether species to the Ni center. This combination addressed complications related to -alkoxy (-OR) elimination and polymerization, and gave unexpected dimerization regioselectivity.
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