Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Joanna Hejmanowska"'
Autor:
Joanna Hejmanowska, Łukasz Albrecht
Publikováno v:
ARKIVOC, Vol 2016, Iss 5, Pp 225-241 (2016)
Externí odkaz:
https://doaj.org/article/3d973a971ff64767845ecb3a7eb6ab09
This study aimed to investigate the possibility of using one-shot hyperspectral airborne images to recognize crops for an area with many small plots. The results showed that unsupervised clustering methods could classify crops with an accuracy of 80%
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2c95475e1e2cfedd8ee9c2c9e6deb56
Publikováno v:
Chem. Commun.. 53:11472-11475
The development of the unprecedented ortho-regioselective inverse-electron-demand hetero-Diels-Alder (IEDHDA) reaction is described. It has been demonstrated that by proper choice of reactants and reaction conditions the inverse-electron-demand heter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1b9989b034ff281604442ae1fb907e1
https://doi.org/10.1039/c7cc06518c
https://doi.org/10.1039/c7cc06518c
Publikováno v:
European Journal of Organic Chemistry. 2017:950-954
An efficient application of aryl and hetaryl thioketones as dienophiles in the enantioselective thia-Diels-Alder reaction is presented for the first time. It has been demonstrated that thioketones of that type can serve as useful heterodienophiles in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1beca5b08af059590df37290ff2f9f91
https://doi.org/10.1002/ejoc.201601307
https://doi.org/10.1002/ejoc.201601307
Autor:
Paulina Pipiak, Heinz Heimgartner, Joanna Hejmanowska, Grzegorz Mlostoń, Marcin Jasiński, Paulina Grzelak, Łukasz Albrecht, Róża Hamera-Fałdyga, Katarzyna Urbaniak
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 192:204-211
Methods for the synthesis of hetaryl and ferrocenyl thioketones as well as applications of this class of organic sulfur compounds in the synthesis of both sulfur-containing and sulfur-free organic products are summarized. The most important applicati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb1b96f335164dc29ce02d25a8ed2845
https://doi.org/10.1080/10426507.2016.1252368
https://doi.org/10.1080/10426507.2016.1252368
Publikováno v:
Advanced Synthesis & Catalysis. 357:3843-3848
An organocatalytic approach for the stereoselective synthesis of 3,4-dihydrocoumarins with an α,α-disubstituted amino acid moiety incorporated is presented. The developed methodology is based on the cascade reaction between α-substituted azlactone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66e23bfd02be4acdcc99a7b9c8a8a364
https://doi.org/10.1002/adsc.201500598
https://doi.org/10.1002/adsc.201500598
Publikováno v:
Synlett. 25:2957-2961
A novel method for the preparation of the spirocyclic Δβ,γ-butenolides is presented. The developed strategy is based on a trienamine-mediated [4+2]-cycloaddition between (E)-3-alkylidene-5-arylfuran-2(3H)-ones and 2,4-dienals. Target products cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::229199a7e46cc6e967d5689f3ceafe21
https://doi.org/10.1055/s-0034-1378905
https://doi.org/10.1055/s-0034-1378905
Publikováno v:
Synthesis. 46:3233-3238
Quaternary amino acids containing a geminal bisphosphonate moiety have been synthesized for the first time. The developed two-step reaction sequence utilizes the Michael addition of α-substituted azlactones to a vinylidene bisphosphonate as the key
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7aadf2716306c5032ac09f2348eb71cf
https://doi.org/10.1055/s-0034-1378997
https://doi.org/10.1055/s-0034-1378997
Publikováno v:
ChemInform. 47
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3904c80fb349ea5a9a13b679d0e0866f
https://doi.org/10.1002/chin.201617153
https://doi.org/10.1002/chin.201617153
Publikováno v:
ChemInform. 46
Attempts upon an enantioselective version of the presented procedure using cinchona alkaloids and their derivatives as chiral catalysts provide the corresponding products with low enantiomeric excess.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c8a072447695296c56daba49bebdc4a
https://doi.org/10.1002/chin.201520230
https://doi.org/10.1002/chin.201520230