期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 25, 期 33, 页码 7839-7842出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201901543
关键词
alkynes; cross-coupling; dihalogenation; hydrohalogenation; hypervalent iodine compounds
资金
- Ministry of Education (Singapore)
- Nanyang Technological University [MOE2016-T2-2-043]
We report herein the synthesis of highly substituted and stereochemically well-defined vinylbenziodoxole (VBX) derivatives through hydrochlorination and iodochlorination of ethynylbenziodoxoles. The hydrochlorination is achieved using pyridine hydrochloride as an HCl source in an anti-fashion under mild, open-air conditions to afford a 2-chlorinated VBX product, which serves as a useful building block for the stereoselective synthesis of trisubstituted alkenes. Meanwhile, iodochlorination with iodine monochloride proceeds in an unusual syn-pathway, stereoselectively affording a tetrasubstituted VBX derivative.
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