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Article: Design and synthesis of chiral ketones for catalytic asymmetric epoxidation of unfunctionalized olefins
Title | Design and synthesis of chiral ketones for catalytic asymmetric epoxidation of unfunctionalized olefins |
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Authors | |
Issue Date | 1998 |
Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html |
Citation | Journal Of The American Chemical Society, 1998, v. 120 n. 24, p. 5943-5952 How to Cite? |
Abstract | A series of C2 symmetric chiral ketones were designed and synthesized for catalytic asymmetric epoxidation of unfunctionalized olefins. Among those ketones screened, (R)-7, (R)-9, and (R)-10 were found to be highly efficient catalysts for epoxidation of trans-stilbenes with enantioselectivities in the range of 84-95%. Convincing evidence was provided for a spiro transition state of dioxirane epoxidation. Through the 18O-labeling experiment, chiral dioxiranes were found to be the intermediates in chiral ketone catalyzed epoxidation reactions. |
Persistent Identifier | http://hdl.handle.net/10722/69661 |
ISSN | 2023 Impact Factor: 14.4 2023 SCImago Journal Rankings: 5.489 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Yang, D | en_HK |
dc.date.accessioned | 2010-09-06T06:15:42Z | - |
dc.date.available | 2010-09-06T06:15:42Z | - |
dc.date.issued | 1998 | en_HK |
dc.identifier.citation | Journal Of The American Chemical Society, 1998, v. 120 n. 24, p. 5943-5952 | en_HK |
dc.identifier.issn | 0002-7863 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/69661 | - |
dc.description.abstract | A series of C2 symmetric chiral ketones were designed and synthesized for catalytic asymmetric epoxidation of unfunctionalized olefins. Among those ketones screened, (R)-7, (R)-9, and (R)-10 were found to be highly efficient catalysts for epoxidation of trans-stilbenes with enantioselectivities in the range of 84-95%. Convincing evidence was provided for a spiro transition state of dioxirane epoxidation. Through the 18O-labeling experiment, chiral dioxiranes were found to be the intermediates in chiral ketone catalyzed epoxidation reactions. | en_HK |
dc.language | eng | en_HK |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html | en_HK |
dc.relation.ispartof | Journal of the American Chemical Society | en_HK |
dc.title | Design and synthesis of chiral ketones for catalytic asymmetric epoxidation of unfunctionalized olefins | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0002-7863&volume=120&issue=24&spage=5943&epage=5952&date=1998&atitle=Design+and+synthesis+of+chiral+ketones+for+catalytic+asymmetric+epoxidation+of+unfunctionalized+olefins | en_HK |
dc.identifier.email | Yang, D:yangdan@hku.hk | en_HK |
dc.identifier.authority | Yang, D=rp00825 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1021/ja980428m | en_HK |
dc.identifier.scopus | eid_2-s2.0-0031749334 | en_HK |
dc.identifier.hkuros | 32404 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0031749334&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 120 | en_HK |
dc.identifier.issue | 24 | en_HK |
dc.identifier.spage | 5943 | en_HK |
dc.identifier.epage | 5952 | en_HK |
dc.identifier.isi | WOS:000074419100010 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Yang, D=7404800756 | en_HK |
dc.identifier.issnl | 0002-7863 | - |