Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Heather E. Burks"'
Autor:
Jayasree M, Srinivasan, Heather E, Burks, Colin R, Smith, Rajesh, Viswanathan, Jeffrey N, Johnston
Publikováno v:
Synthesis. 2005(2)
Two nonnatural proline derivatives, (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::2195703c66796d80d60ec0a19dc61f8a
https://pubmed.ncbi.nlm.nih.gov/36277480
https://pubmed.ncbi.nlm.nih.gov/36277480
Publikováno v:
Journal of the American Chemical Society. 144:13981-13981
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b17de46eb348c5d58fd026f10fc53d86
https://doi.org/10.1021/jacs.2c06800
https://doi.org/10.1021/jacs.2c06800
Publikováno v:
Journal of the American Chemical Society. 129:8766-8773
In the presence of a chiral phosphoramidite ligand, the palladium-catalyzed diboration of allenes can be executed with high enantioselectivity. This reaction provides high levels of selectivity with a range of aromatic and aliphatic allene substrates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d693afc92f96d9412ed23d59e289705
https://doi.org/10.1021/ja070572k
https://doi.org/10.1021/ja070572k
Autor:
Jeffrey N. Johnston, Heather E. Burks, Colin R. Smith, Jayasree M. Srinivasan, Rajesh Viswanathan
Publikováno v:
Synthesis. 2005:330-333
Two nonnatural proline derivatives, (S)- and (R)-7-azaindoline a-amino acid have been prepared and isolated as their trifluoro- acetate salt on gram scale. The convergent sequence (6 steps from 2-bromopyridine) employs a combination of enantioselecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48628ed6f26d346e90330ef5e2ad40c8
https://doi.org/10.1055/s-2004-831226
https://doi.org/10.1055/s-2004-831226
Publikováno v:
ChemInform. 42
A chiral BINOL-derived Cu(II) phosphate is successfully applied as catalyst in the asymmetric cycloisomerization—indole addition of α-alkynylcyclohexenones (I) and (IV) to give indolyl-substituted tetrahydrobenzofurans in good yields and stereosel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac4268f899fd3ca498ab2b7e85c777be
https://doi.org/10.1002/chin.201144093
https://doi.org/10.1002/chin.201144093
Publikováno v:
Journal of the American Chemical Society. 133(22)
A catalytic enantioselective reaction based on a copper(II) catalyst strictly containing chiral anionic ligands is described. In the present work, copper(II)–phosphate catalyst promotes the intramolecular heterocyclization of 2-(1-alkynyl)-2-alkene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef1c223437dbc1113a398db8bd3b8729
https://pubmed.ncbi.nlm.nih.gov/35853616
https://pubmed.ncbi.nlm.nih.gov/35853616
Publikováno v:
ChemInform. 40
Asymmetric 1,4-dihydroxylations of 1,3-dienes, and other transformations, are initiated by the Pt-catalyzed enantioselective addition of bis(pinacolato)diboron (B2(pin)2) to conjugated dienes. The studies reported in this communication suggest that b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70ab3f1cb09db4b66c5e83c4a5c45f44
https://doi.org/10.1002/chin.200949049
https://doi.org/10.1002/chin.200949049
Autor:
Heather E. Burks, James P. Morken
Publikováno v:
ChemInform. 39
This article summarizes recent developments in the area of catalytic enantioselective reactions of unsaturated organic substrates with diboron, silylboron, and disilane reagents. These reactions provide new routes to the functionalization of prochira
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd2016985f78e518e07c51a7dc8b51b3
https://doi.org/10.1002/chin.200810242
https://doi.org/10.1002/chin.200810242
Autor:
James P. Morken, Heather E. Burks
Publikováno v:
Chemical communications (Cambridge, England). (45)
This article summarizes recent developments in the area of catalytic enantioselective reactions of unsaturated organic substrates with diboron, silylboron, and disilane reagents. These reactions provide new routes to the functionalization of prochira
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::caf1cba7e2db9d1da073a5bd32cf176a
https://pubmed.ncbi.nlm.nih.gov/18004420
https://pubmed.ncbi.nlm.nih.gov/18004420
Publikováno v:
Organic letters. 7(24)
[reaction: see text] Palladium-catalyzed enantioselective diboration of prochiral allenes generates a reactive chiral allylboron intermediate which is a versatile reagent for the allylation of carbonyls. Experiments that improve the enantioselectivit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c9ebddb13599b65277799594975ab20
https://pubmed.ncbi.nlm.nih.gov/16288542
https://pubmed.ncbi.nlm.nih.gov/16288542