Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Arvydas Stoncius"'
Autor:
Markus Nahrwold, Arvydas Stončius, Anna Penner, Beate Neumann, Hans-Georg Stammler, Norbert Sewald
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 5, Iss 1, p 43 (2009)
Novel procedures have been developed to condense benzaldehyde effectively with β-amino acid amides to cyclic benzyl aminals. Double carbamate protection of the heterocycle resulted in fully protected chiral β-alanine derivatives. These serve as uni
Externí odkaz:
https://doaj.org/article/0fbbce44f71e438681c4f89579d49c17
Publikováno v:
Lubrication Science. 30:189-205
Volatile materials, released by lubricants, relate to various engineering, occupational and workmanship aspects. Most tests (flash point, NOACK, TGA etc.) assess thermodynamic evaporation without focusing on prolonged oxidation and hydrolysis, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccd1ce9b0b7eef855c7f3733cbed1ed7
https://doi.org/10.1002/ls.1372
https://doi.org/10.1002/ls.1372
Publikováno v:
Journal of Essential Oil Research. 27:454-458
Chemical composition of the essential oils obtained by hydrodistillation of aerial parts of Glechoma hederacea L. plants, which were transferred from five different natural habitats in Lithuania to the field collection, is reported. Sixty-two compoun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::394365f10d72e8f7a10f59fa88163c78
https://doi.org/10.1080/10412905.2015.1039663
https://doi.org/10.1080/10412905.2015.1039663
Publikováno v:
Industrial Lubrication and Tribology. 65:209-215
PurposeWorkmanship concerns lead to more focus on volatile materials, released by industrial lubricants. Typically, flash point test and thermo‐gravimetrical analysis (TGA) are used to investigate basestock volatility, but they do not address long
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5122c9e979a685cbc36d171f2c5ba62a
https://doi.org/10.1108/00368791311311213
https://doi.org/10.1108/00368791311311213
Publikováno v:
Synthesis. 2006:3747-3789
Nature provides a huge reservoir of highly diverse chemical compounds with interesting biological properties. Secondary metabolites continue to represent promising candidates for therapeutic applications and drugs are very often based on natural prod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fccc8fd1d4ebf7e8a7b045b4fb3a00d
https://doi.org/10.1055/s-2006-950332
https://doi.org/10.1055/s-2006-950332
Publikováno v:
Canadian Journal of Chemistry. 79:1598-1605
The stereoselectivity of the reduction of bicyclo[3.3.1]nonane 1,3-diketones was studied. The experimental data of π-facial stereoselection of the reduction of the carbonyl group were successfully rationalized by the application of the exterior fron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2004926c3bf0e33cfe5d1b62d3f303b
https://doi.org/10.1139/v01-131
https://doi.org/10.1139/v01-131
Publikováno v:
Tetrahedron: Asymmetry. 11:3849-3853
The conjugate addition of methylcuprates and methyllithium to ethyl 5-phenyl-1,3-dioxolan-4-yl-2-propenoate was investigated. It was found that the stereoselectivity is highly dependent on the reagent used. In reactions with stabilized methylcuprates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::901e4532b2c56ec1bf823747d294c846
https://doi.org/10.1016/s0957-4166(00)00353-0
https://doi.org/10.1016/s0957-4166(00)00353-0
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :2547-2552
The enantiomers of spiro[benzo-1,3-dioxole-2,9′-bicyclo[3.3.1]nonan]-2′-one 2 and the corresponding diastereomeric exo-2′- and endo-2′-hydroxy acetals 3a,b obtained from this monoacetal were resolved by HPLC on a swollen microcrystalline tria
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6e85992bd735732bf5c60be2a66a01a
https://doi.org/10.1039/a802522c
https://doi.org/10.1039/a802522c
Publikováno v:
Acta Chemica Scandinavica. 51:1030-1034
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37c9f17bc85ee05f5a6dff102887e2e4
https://doi.org/10.3891/acta.chem.scand.51-1030
https://doi.org/10.3891/acta.chem.scand.51-1030
Autor:
Arvydas Stoncius, Eugenius Butkus
Publikováno v:
ChemInform. 30
A highly enantioselective synthesis of bicyclo[3.3.1]nonane diketones 3-5 was accomplished by (S)and (R)-2methoxymethylpyrrolidine induced asymmetric cyclization of cyclohexanone enamines 1,2 in reaction with propenoyl chloride. A possible enantiodif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57df929fe444c8a9dc0803c1f50452f2
https://doi.org/10.1002/chin.199924076
https://doi.org/10.1002/chin.199924076