FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023758113> ?p ?o ?g. }

• W2023758113 endingPage "958" @default.
• W2023758113 startingPage "948" @default.
• W2023758113 abstract "Treatment of 6-(dimethylamino)-6-methylpentafulvene (2a) with methyllithium in ether at −40 °C leads to CH3 addition to the C6-fulvene carbon atom to yield the [C5H4−CMe2−NMe2]Li reagent 3a, whereas treatment of 2a with MeLi in THF at −78 °C results in deprotonation with formation of [C5H4−C(CH2)−NMe2]Li (4a). In contrast, treatment of 6-diethylamino-6-methylfulvene (2b) with methyllithium under any of these conditions leads only to H+-abstraction to give [C5H4−C(CH2)−NEt2]Li (4b). Treatment of the reagents 4 with CpZrCl3 yields the enamino-Cp-substituted bent metallocenes [η5-C5H4−C(CH2)−NR2]CpZrCl2 5a (R = CH3) and 5b (R = C2H5), respectively. Analogous treatment of 4b with zirconium tetrachloride gave the doubly functionalized zirconocene complex [η5-C5H4−C(CH2)−NEt2]2ZrCl2 (6b). The complexes 5a, 5b, and 6b were characterized by X-ray diffraction. Treatment of 3a with CpZrCl3 gave [η5-C5H4−CMe2−NMe2]CpZrCl2 (8a); the analogous reaction with ZrCl4 gave [η5-C5H4−CMe2−NMe2]2ZrCl2 (8b). Both complexes 8 reacted with (butadiene)magnesium with replacement of both chloride ligands at zirconium. The probably generated (η4-butadiene)zirconocene complexes were, however, not stable under the applied reaction conditions, but reacted further by C−H activation at the N−CH3 group with intramolecular hydrogen transfer to the butadiene ligand to yield the cyclometalated products [η5-C5H4−CMe2− N(CH3)−CH2−]Zr(L)(CH2CHCHCH3) 13a (L = Cp) and 13b (L = [η5-C5H4−CMe2−NMe2]), respectively. Complex 5a reacts analogously with (butadiene)magnesium to yield the C−H activation product [η5-C5H4−C(CH2)−N(CH3)−CH2−]ZrCp(CH2CHCHCH3) 14. The 1-diethylaminoethenyl-Cp-substituted systems 5b and 6b react differently with (butadiene)magnesium. They form the stable η4-butadiene complexes s-trans-15 and s-cis-15A/B (from 5b) and s-trans-17 and s-cis-17 (from 6b), respectively. [N]CH activation was not observed in these cases. Treatment of the cyclometalated products 13a, 14, and 15 with B(C6F5)3 gave active homogeneous Ziegler−Natta catalysts for ethene polymerization, whereas the systems 13b/B(C6F5)3 and 17/B(C6F5)3 were close to inactive under comparable conditions." @default.
• W2023758113 created "2016-06-24" @default.
• W2023758113 creator A5034807035 @default.
• W2023758113 creator A5039921470 @default.
• W2023758113 creator A5048542589 @default.
• W2023758113 creator A5075069320 @default.
• W2023758113 date "2003-01-25" @default.
• W2023758113 modified "2023-10-16" @default.
• W2023758113 title "Selective Intramolecular [N]CH Activation in Bis(1-ethenylamino-Cp)zirconium−Butadiene Complexes and Related Systems" @default.
• W2023758113 cites W1571169618 @default.
• W2023758113 cites W1970487477 @default.
• W2023758113 cites W1971693112 @default.
• W2023758113 cites W1973070844 @default.
• W2023758113 cites W1973938671 @default.
• W2023758113 cites W1986615571 @default.
• W2023758113 cites W1988685390 @default.
• W2023758113 cites W2016467808 @default.
• W2023758113 cites W2021850481 @default.
• W2023758113 cites W2027205503 @default.
• W2023758113 cites W2027209438 @default.
• W2023758113 cites W2030726354 @default.
• W2023758113 cites W2030951568 @default.
• W2023758113 cites W2034671816 @default.
• W2023758113 cites W2039751360 @default.
• W2023758113 cites W2040480607 @default.
• W2023758113 cites W2060277356 @default.
• W2023758113 cites W2063923485 @default.
• W2023758113 cites W2077041472 @default.
• W2023758113 cites W2083924613 @default.
• W2023758113 cites W2086028790 @default.
• W2023758113 cites W2094311406 @default.
• W2023758113 cites W2159736600 @default.
• W2023758113 cites W2337621743 @default.
• W2023758113 cites W2953042949 @default.
• W2023758113 cites W4245502087 @default.
• W2023758113 doi "https://doi.org/10.1021/om020798q" @default.
• W2023758113 hasPublicationYear "2003" @default.
• W2023758113 type Work @default.
• W2023758113 sameAs 2023758113 @default.
• W2023758113 citedByCount "25" @default.
• W2023758113 countsByYear W20237581132012 @default.
• W2023758113 countsByYear W20237581132015 @default.
• W2023758113 countsByYear W20237581132022 @default.
• W2023758113 crossrefType "journal-article" @default.
• W2023758113 hasAuthorship W2023758113A5034807035 @default.
• W2023758113 hasAuthorship W2023758113A5039921470 @default.
• W2023758113 hasAuthorship W2023758113A5048542589 @default.
• W2023758113 hasAuthorship W2023758113A5075069320 @default.
• W2023758113 hasConcept C116569031 @default.
• W2023758113 hasConcept C118629725 @default.
• W2023758113 hasConcept C134121241 @default.
• W2023758113 hasConcept C145148216 @default.
• W2023758113 hasConcept C155647269 @default.
• W2023758113 hasConcept C170493617 @default.
• W2023758113 hasConcept C178790620 @default.
• W2023758113 hasConcept C179104552 @default.
• W2023758113 hasConcept C185592680 @default.
• W2023758113 hasConcept C191897082 @default.
• W2023758113 hasConcept C192562407 @default.
• W2023758113 hasConcept C2779743861 @default.
• W2023758113 hasConcept C534791751 @default.
• W2023758113 hasConcept C543218039 @default.
• W2023758113 hasConcept C55493867 @default.
• W2023758113 hasConcept C71240020 @default.
• W2023758113 hasConcept C75079739 @default.
• W2023758113 hasConceptScore W2023758113C116569031 @default.
• W2023758113 hasConceptScore W2023758113C118629725 @default.
• W2023758113 hasConceptScore W2023758113C134121241 @default.
• W2023758113 hasConceptScore W2023758113C145148216 @default.
• W2023758113 hasConceptScore W2023758113C155647269 @default.
• W2023758113 hasConceptScore W2023758113C170493617 @default.
• W2023758113 hasConceptScore W2023758113C178790620 @default.
• W2023758113 hasConceptScore W2023758113C179104552 @default.
• W2023758113 hasConceptScore W2023758113C185592680 @default.
• W2023758113 hasConceptScore W2023758113C191897082 @default.
• W2023758113 hasConceptScore W2023758113C192562407 @default.
• W2023758113 hasConceptScore W2023758113C2779743861 @default.
• W2023758113 hasConceptScore W2023758113C534791751 @default.
• W2023758113 hasConceptScore W2023758113C543218039 @default.
• W2023758113 hasConceptScore W2023758113C55493867 @default.
• W2023758113 hasConceptScore W2023758113C71240020 @default.
• W2023758113 hasConceptScore W2023758113C75079739 @default.
• W2023758113 hasIssue "5" @default.
• W2023758113 hasLocation W20237581131 @default.
• W2023758113 hasOpenAccess W2023758113 @default.
• W2023758113 hasPrimaryLocation W20237581131 @default.
• W2023758113 hasRelatedWork W185597241 @default.
• W2023758113 hasRelatedWork W1894169895 @default.
• W2023758113 hasRelatedWork W2018109635 @default.
• W2023758113 hasRelatedWork W2094890239 @default.
• W2023758113 hasRelatedWork W2097014657 @default.
• W2023758113 hasRelatedWork W2322034987 @default.
• W2023758113 hasRelatedWork W2530020503 @default.
• W2023758113 hasRelatedWork W4240210971 @default.
• W2023758113 hasRelatedWork W4242239017 @default.
• W2023758113 hasRelatedWork W4318471993 @default.
• W2023758113 hasVolume "22" @default.
• W2023758113 isParatext "false" @default.

• next