https://scholars.lib.ntu.edu.tw/handle/123456789/612095
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Farrell, Jeffrey M. | en_US |
dc.contributor.author | Stephan, Douglas W. | en_US |
dc.contributor.author | JEFFREY M. FARRELL | zz |
dc.creator | Farrell, Jeffrey M.; Stephan, Douglas W. | - |
dc.date.accessioned | 2022-05-27T07:37:44Z | - |
dc.date.available | 2022-05-27T07:37:44Z | - |
dc.date.issued | 2015 | - |
dc.identifier.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027928783&doi=10.1002%2fanie.201500198&partnerID=40&md5=2dfbdb811413c152b1c495b6eab1c87c | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/612095 | - |
dc.description.abstract | The NHC-borane adduct (IBn)BH3 (1) (NHC= N-heterocyclic carbene; IBn=1,3-dibenzylimidazol-2ylidene) reacts with [Ph3C][B(C6F5)4] through sequential hydride abstraction and dehydrogenative cationic borylation(s) to give singly or doubly ring closed NHC-borenium salts 2 and 3. The planar doubly ring closed product [C3H2(NCH2C6H4)2B][B(C6F5)4] is resistant to quaternization at boron by Et2O coordination, but forms classical Lewis acid-base adducts with the stronger donors Ph3P, Et3PO, or 1,4-diazabicyclo[2.2.2]octane (DABCO). Treatment of 3 with tBu3P selectively yields the unusual oligomeric borenium salt trans-[(C3H2(NCH2C6H4)2B)2(C3H2(NCHC6H4)2B)][B(C6F5)4] (7). Boron in action: Singly or doubly ring closed NHC-borenium salts (NHC= N-heterocyclic carbene) are prepared by dehydrogenative cationic borylation. Treatment of the planar doubly ring closed product (see picture, left) with tBu3P leads to the formation of an unusual trans C2-symmetric oligomeric borenium salt (right). Atom colors: C, black; N, blue; B, yellow. ? 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. | - |
dc.relation.ispartof | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | - |
dc.subject | boranes; borylation; carbenes; frustrated Lewis pairs; steric hindrance | - |
dc.subject.other | Boron; Hydrides; Oligomers; Salts; Synthesis (chemical); boranes; Borylation; Carbenes; Frustrated lewis pairs; Steric hindrances; Organic compounds | - |
dc.title | Planar N-Heterocyclic Carbene Diarylborenium Ions: Synthesis by Cationic Borylation and Reactivity with Lewis Bases | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1002/anie.201500198 | - |
dc.identifier.scopus | 2-s2.0-85027928783 | - |
dc.relation.pages | 5214-5217 | - |
dc.relation.journalvolume | 54 | - |
dc.relation.journalissue | 17 | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
crisitem.author.dept | Chemistry | - |
crisitem.author.dept | Chemistry | - |
crisitem.author.orcid | 0000-0001-5377-354X | - |
crisitem.author.parentorg | College of Science | - |
crisitem.author.parentorg | College of Science | - |
顯示於: | 化學系 |
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