Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Gemma Cansell"'
Autor:
Joanna M. Redmond, Rebecca H. Pouwer, Thais Cailleau, Andrew J. P. White, Gemma Cansell, Stephen A. Hermitage, D. Christopher Braddock
Publikováno v:
Tetrahedron: Asymmetry. 21:2911-2919
The condensation of enantiopure 1,2-diamines with terephthalaldehyde, isophthalaldehyde or 2-iodo-, 2-alkyl- or 2-aryl-1,3-benzenedialdehydes in toluene followed by treatment with NBS in dichloromethane gives direct access to enantiopure 1,4-, and 1,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad61afd462e02dff0c7df16956758a7f
https://doi.org/10.1016/j.tetasy.2010.12.002
https://doi.org/10.1016/j.tetasy.2010.12.002
Autor:
Alan John Pettman, Suju Mathew, Georges Assaf, Doug Critcher, Gemma Cansell, Stewart T. Hayes, Stuart Field
Publikováno v:
Tetrahedron Letters. 51:5048-5051
We report our results on the construction of a morpholine ring system from the corresponding epoxide and amino alcohol. From this study, we were able to convert a previous four-step synthesis into a more efficient two-step process.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef211c2c4b192b3671c7c3810b0d1b85
https://doi.org/10.1016/j.tetlet.2010.07.106
https://doi.org/10.1016/j.tetlet.2010.07.106
Publikováno v:
Tetrahedron: Asymmetry. 15:3123-3129
A pair of enantiopure chair and twist trans-cyclooctenes isomers were prepared by regioselective Sharpless asymmetric dihydroxylation of the central olefin of (E)-1,5,9-dectriene triene, with subsequent ring-closing metathesis to form an enantiomeric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a382610e5db16b175dcdc917dba80795
https://doi.org/10.1016/j.tetasy.2004.07.036
https://doi.org/10.1016/j.tetasy.2004.07.036
Publikováno v:
Synlett. :461-464
A mild and versatile procedure for the bromination of olefins and activated arenes by in situ generation of 'Br + ' using (diacetoxyiodo)benzene and lithium bromide is presented. The reactions were carried out in open vessels at room temperature and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82a0c741b7ad492aa6301c505f588d84
https://doi.org/10.1055/s-2004-815410
https://doi.org/10.1055/s-2004-815410
Autor:
Rebecca H. Pouwer, Joanna M. Redmond, Stephen A. Hermitage, Gemma Cansell, Thais Cailleau, D. Christopher Braddock, Andrew J. P. White
Publikováno v:
ChemInform. 42
The condensation—oxidation of dialdehydes (I) and (V) with diamines gives the corresponding 1,3- and 1,4-diamidines.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1af5392ad7ab67d6395fa6230045ff1
https://doi.org/10.1002/chin.201122121
https://doi.org/10.1002/chin.201122121
Autor:
Andrew J. P. White, Stephen A. Hermitage, Joanna M. Redmond, Simon M. Ahmad, Gemma Cansell, D. Christopher Braddock
Publikováno v:
ChemInform. 38
(±)-iso-Amarine is a potent organocatalyst at 1 mol % loading for both the bromoacetoxylation of alkenes with added acetic acid and bromolactonisation of unsaturated carboxylic acids with stoichiometric NBS as the electrophilic bromine source. A sim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e7c4e39db6c45fbaffd61c9547ef41a
https://doi.org/10.1002/chin.200749032
https://doi.org/10.1002/chin.200749032
Publikováno v:
ChemInform. 38
Dimethylformamide, dimethylacetamide and tetramethylguanidine were found to act as increasingly active catalysts for the bromolactonisation of γ,δ- and δ,e-unsaturated carboxylic acids with N-bromosuccinimide. The catalysts are readily removed in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9434ecb08900cf16531a711be0bfb709
https://doi.org/10.1002/chin.200719034
https://doi.org/10.1002/chin.200719034
Publikováno v:
ChemInform. 37
Suitably ortho-substituted iodobenzenes act as organocatalysts for the transfer of electrophilic bromine from N-bromosuccinimide to alkenes via the intermediacy of bromoiodinanes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::986b0ed8271efc5a84a7d2a60a48cade
https://doi.org/10.1002/chin.200644046
https://doi.org/10.1002/chin.200644046
Publikováno v:
ChemInform. 37
Bromoiodinanes--conveniently and directly prepared from iodobenzenecarbinols and N-bromosuccinimide, and characterised for the first time crystallographically--act as electrophilic bromine donors.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad266e467bfdaf9b5abd8dcab1694fd0
https://doi.org/10.1002/chin.200632052
https://doi.org/10.1002/chin.200632052
Publikováno v:
ChemInform. 35
A mild and versatile procedure for the bromination of olefins and activated arenes by in situ generation of 'Br + ' using (diacetoxyiodo)benzene and lithium bromide is presented. The reactions were carried out in open vessels at room temperature and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8adda4f38475e1b258cb3b9929af79b9
https://doi.org/10.1002/chin.200426046
https://doi.org/10.1002/chin.200426046