Zobrazeno 1 - 10
of 177
pro vyhledávání: '"James A. Lovell"'
Publikováno v:
Freshwater Science. 36:626-634
Investigations into how fish affect macroinvertebrates in lotic ecosystems have produced equivocal results, and few researchers have examined fish effects on invertebrates in sandy-bottomed blackwater streams. We measured the responses of macroinvert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d2a9a37447ca80dbf78b9b2b09fbc4f
https://doi.org/10.1086/693474
https://doi.org/10.1086/693474
Autor:
David L. Jauncey, Lucyna Kedziora-Chudczer, James E.J. Lovell, Jean-Pierre MacQuart, George D. Nicolson, Rick A. Perley, John E. Reynolds, Anastasios K. Tzioumis, Mark H. Wieringa, Hayley E. Bignall
Publikováno v:
International Astronomical Union Colloquium. 182:86-92
Intra-day variability (IDV) of active galactic nuclei (AGN) has been detected from gamma-ray energies to radio wavelengths. At high energies, such variability appears to be intrinsic to the sources themselves. However, at radio wavelengths, brightnes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13a64935ed4488daf13144bef1410f84
https://doi.org/10.1017/s0252921100000750
https://doi.org/10.1017/s0252921100000750
Autor:
James M. Lovell, John A. Joule
Publikováno v:
Synthetic Communications. 27:1209-1215
1,8-Diiodoanthracene has been prepared from commercially available 1,8-dichloroanthraquinone; it was shown to couple twice under Pd(0)-catalysis, with thianthrene 1- and 2-boronic acids giving 1,8-bis(thianthrenyl)anthracenes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16f2135d33522bb8685f6e594625ecd6
https://doi.org/10.1080/00397919708003358
https://doi.org/10.1080/00397919708003358
Publikováno v:
Tetrahedron Letters. 37:4283-4286
The alkaloids hydroxycryptolepine, cryptolepine and quindoline have been synthesised utilising the intramolecular β-nucleophilic substitution of a 1-phenylsulfonyl-2-acylindole.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5419727ac3429ad718474d02d8772f5
https://doi.org/10.1016/0040-4039(96)00818-0
https://doi.org/10.1016/0040-4039(96)00818-0
Publikováno v:
Tetrahedron. 52:4745-4756
Lithiation of thianthrene 5-oxide, then trapping with chlorotrimethylsilane gave 4-mono-, 4,6-di, 4b, and 4,6,9-tri-TMS derivatives. Reduction of oxide 4b to the thianthrene followed by reaction with bromine gave 4,6-dibromothianthrene which coupled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d78551da524daf51d1c06f6cf043b651
https://doi.org/10.1016/0040-4020(96)00145-7
https://doi.org/10.1016/0040-4020(96)00145-7
Publikováno v:
ChemInform. 27
Lithiation of thianthrene 5-oxide, then trapping with chlorotrimethylsilane gave 4-mono-, 4,6-di, 4b, and 4,6,9-tri-TMS derivatives. Reduction of oxide 4b to the thianthrene followed by reaction with bromine gave 4,6-dibromothianthrene which coupled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::032532eb8118b304d850012230f6d382
https://doi.org/10.1002/chin.199629165
https://doi.org/10.1002/chin.199629165
Publikováno v:
ChemInform. 27
The alkaloids hydroxycryptolepine, cryptolepine and quindoline have been synthesised utilising the intramolecular β-nucleophilic substitution of a 1-phenylsulfonyl-2-acylindole.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b482586cde6ece87e2f524c582e9150
https://doi.org/10.1002/chin.199637304
https://doi.org/10.1002/chin.199637304
Autor:
James M. Lovell, John A. Joule
Publikováno v:
ChemInform. 28
Lithiation of thianthrene at C-1 allows the synthesis of various 1-substituted thianthrenes for example thianthren-1-ylboronic acid and 1-tributylstannylthianthrene, which undergo palladium-catalysed couplings with aryl halides. 2-Bromothianthrene pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b982f69374e0ddeabd08360e9d01fdc
https://doi.org/10.1002/chin.199711123
https://doi.org/10.1002/chin.199711123
Autor:
James M. Lovell, John A. Joule
Publikováno v:
ChemInform. 28
1,8-Diiodoanthracene has been prepared from commercially available 1,8-dichloroanthraquinone; it was shown to couple twice under Pd(0)-catalysis, with thianthrene 1- and 2-boronic acids giving 1,8-bis(thianthrenyl)anthracenes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ba29716f87cebe8c716855bd21cd7e7
https://doi.org/10.1002/chin.199729089
https://doi.org/10.1002/chin.199729089