FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2003569831> ?p ?o ?g. }

• W2003569831 endingPage "881" @default.
• W2003569831 startingPage "868" @default.
• W2003569831 abstract "A sterically encumbered [N2S6] macropentacycle (5) related to diazamacrobicycles and cryptands has been synthesized in 53% yield by the [1+1] condensation reaction between functionalized macrocyclic and macrotricyclic precursors. A macrononacycle (18) resulting from the corresponding [2+2] condensation was isolated in 7% yield from the reaction mixture. Both compounds showed broad features in their room-temperature 1H NMR spectra, but their maximal average symmetry (D3h and D2h, respectively) was achieved at high temperature (380 K). At low temperature (200 K, CD2Cl2 solution), the macropentacycle is “frozen” to a single asymmetric (C1) conformation on the 1H NMR time scale, which has also the molecular structure observed in the solid state by X-ray crystallography: pseudo-triple helical (≠C3) shape, io (in, out) form resulting from the endo/exo configuration at the nitrogen bridgehead atoms, and similar orientations of the tosyl substituents. The solution dynamics of the molecule can be described by coupled bridgehead nitrogen inversion, triple helix symmetrization, and reversal of triple helix handedness, with ΔGc⧧ = 54.2 kJ mol-1 in CD2Cl2 at 300 K. Adoption of the io form by macropentacycle 5 in the crystal and in solution at low-temperature most probably results from the steric crowding and strain introduced by the [15]ane-N2S2 macrocyclic bridging subunits." @default.
• W2003569831 created "2016-06-24" @default.
• W2003569831 creator A5002309157 @default.
• W2003569831 creator A5033156829 @default.
• W2003569831 creator A5041101129 @default.
• W2003569831 creator A5075983778 @default.
• W2003569831 date "2007-12-29" @default.
• W2003569831 modified "2023-10-17" @default.
• W2003569831 title "The <i>in, out</i> Asymmetric Pseudo-Triple Helical Form of a <i>D</i>₃<i>_h</i> Diaza-Macropentacycle" @default.
• W2003569831 cites W1506390521 @default.
• W2003569831 cites W1563954963 @default.
• W2003569831 cites W1969208302 @default.
• W2003569831 cites W1974010142 @default.
• W2003569831 cites W1981111904 @default.
• W2003569831 cites W1981871584 @default.
• W2003569831 cites W1987912767 @default.
• W2003569831 cites W1993395069 @default.
• W2003569831 cites W1993429549 @default.
• W2003569831 cites W1994042172 @default.
• W2003569831 cites W1995626066 @default.
• W2003569831 cites W2005334996 @default.
• W2003569831 cites W2016460634 @default.
• W2003569831 cites W2022104057 @default.
• W2003569831 cites W2026977397 @default.
• W2003569831 cites W2027871937 @default.
• W2003569831 cites W2031489348 @default.
• W2003569831 cites W2034732175 @default.
• W2003569831 cites W2037849444 @default.
• W2003569831 cites W2045560023 @default.
• W2003569831 cites W2048983337 @default.
• W2003569831 cites W2052855969 @default.
• W2003569831 cites W2062370334 @default.
• W2003569831 cites W2062937593 @default.
• W2003569831 cites W2063334178 @default.
• W2003569831 cites W2072235076 @default.
• W2003569831 cites W2079120264 @default.
• W2003569831 cites W2082041971 @default.
• W2003569831 cites W2082104950 @default.
• W2003569831 cites W2093708264 @default.
• W2003569831 cites W2120761224 @default.
• W2003569831 cites W2129064638 @default.
• W2003569831 cites W2168206768 @default.
• W2003569831 cites W2170697346 @default.
• W2003569831 cites W2327948387 @default.
• W2003569831 cites W2328812924 @default.
• W2003569831 cites W2949754605 @default.
• W2003569831 cites W2949994526 @default.
• W2003569831 doi "https://doi.org/10.1021/jo701984z" @default.
• W2003569831 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18163644" @default.
• W2003569831 hasPublicationYear "2007" @default.
• W2003569831 type Work @default.
• W2003569831 sameAs 2003569831 @default.
• W2003569831 citedByCount "14" @default.
• W2003569831 countsByYear W20035698312012 @default.
• W2003569831 countsByYear W20035698312015 @default.
• W2003569831 countsByYear W20035698312020 @default.
• W2003569831 countsByYear W20035698312022 @default.
• W2003569831 crossrefType "journal-article" @default.
• W2003569831 hasAuthorship W2003569831A5002309157 @default.
• W2003569831 hasAuthorship W2003569831A5033156829 @default.
• W2003569831 hasAuthorship W2003569831A5041101129 @default.
• W2003569831 hasAuthorship W2003569831A5075983778 @default.
• W2003569831 hasConcept C10919887 @default.
• W2003569831 hasConcept C121332964 @default.
• W2003569831 hasConcept C122873222 @default.
• W2003569831 hasConcept C1276947 @default.
• W2003569831 hasConcept C134121241 @default.
• W2003569831 hasConcept C178790620 @default.
• W2003569831 hasConcept C185592680 @default.
• W2003569831 hasConcept C191897082 @default.
• W2003569831 hasConcept C192562407 @default.
• W2003569831 hasConcept C201194858 @default.
• W2003569831 hasConcept C32909587 @default.
• W2003569831 hasConcept C4839761 @default.
• W2003569831 hasConcept C537208039 @default.
• W2003569831 hasConcept C67787023 @default.
• W2003569831 hasConcept C71240020 @default.
• W2003569831 hasConcept C8010536 @default.
• W2003569831 hasConceptScore W2003569831C10919887 @default.
• W2003569831 hasConceptScore W2003569831C121332964 @default.
• W2003569831 hasConceptScore W2003569831C122873222 @default.
• W2003569831 hasConceptScore W2003569831C1276947 @default.
• W2003569831 hasConceptScore W2003569831C134121241 @default.
• W2003569831 hasConceptScore W2003569831C178790620 @default.
• W2003569831 hasConceptScore W2003569831C185592680 @default.
• W2003569831 hasConceptScore W2003569831C191897082 @default.
• W2003569831 hasConceptScore W2003569831C192562407 @default.
• W2003569831 hasConceptScore W2003569831C201194858 @default.
• W2003569831 hasConceptScore W2003569831C32909587 @default.
• W2003569831 hasConceptScore W2003569831C4839761 @default.
• W2003569831 hasConceptScore W2003569831C537208039 @default.
• W2003569831 hasConceptScore W2003569831C67787023 @default.
• W2003569831 hasConceptScore W2003569831C71240020 @default.
• W2003569831 hasConceptScore W2003569831C8010536 @default.
• W2003569831 hasIssue "3" @default.
• W2003569831 hasLocation W20035698311 @default.
• W2003569831 hasLocation W20035698312 @default.
• W2003569831 hasLocation W20035698313 @default.

• next