Journal
SYNLETT
Volume 31, Issue 13, Pages 1318-1322Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0039-1690879
Keywords
asymmetric catalysis; copper catalysis; bisoxazolines; chlorination; pyrazolones
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Funding
- National Key R&D Program of China [2017YFB0307200]
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A fast and highly enantioselective chlorination of 4-pyrazolones catalyzed by bis(oxazoline)-Cu(ClO4)(2)center dot 6H(2)O complexes has been developed. Under the optimized conditions, a series of pyrazolones bearing stereogenic chlorine-attached carbon centers were obtained in moderate to high yields (up to 98%) and with enantioselectivities of up to 98% ee.
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