FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2014292787> ?p ?o ?g. }

• W2014292787 endingPage "8323" @default.
• W2014292787 startingPage "8313" @default.
• W2014292787 abstract "This paper describes the reactivity of permethylzirconocene and permethyltitanocene toward different 1,3-butadiynes. A pointed dependence on the metals and the diyne substituents was found. Unusual, but still stable, five-membered zirconacyclocumulenes (η4-diyne complexes, zirconacyclopenta-2,3,4-trienes) Cp*2Zr(η4-1,2,3,4-RC4R), R = Ph and SiMe3, were prepared using two new and effective synthetic routes. One starts with the permethylzirconocene bisacetylides Cp*2Zr(C⋮CR)2, R = Ph (1a), SiMe3 (1b), which rearrange in sunlight to form the stable five-membered zirconacyclocumulenes Cp*2Zr(η4-1,2,3,4-RC4R), R = Ph (2a), SiMe3 (2b). The alternative route to 2a and 2b is the reduction of Cp*2ZrCl2 with Mg in the presence of the adequate disubstituted butadiynes RC⋮C−C⋮CR. Both methods failed to produce the analogous titanacyclocumulenes, which seemed extremely unstable. Nevertheless, we were able to obtain distinct products employing the reduction pathway with permethyltitanocene. For R = SiMe3, the novel titanacyclopropene (η2-complex) Cp*2Ti(η2-1,2-Me3SiC2C⋮CSiMe3) (3) was isolated. For R = Ph, an activation of both pentamethylcyclopentadienyl ligands was observed resulting in the complex [η5-C5Me4−(CH2)−]Ti[−C(CHPh)C(CHPh)CH2-η5-C5Me4] (4). The reaction of 4 with carbon dioxide led to the Cp*-substituted titanafuranone Cp*Ti[−OC(O)C(Ph)C(−)C(CHPh)CH2-η5-C5Me4] (5). The zirconacyclocumulene 2b surprisingly inserted two molecules of CO2 to give the unprecedented cumulenic dicarboxylate Cp*2Zr [−OC(O)C(SiMe3)CCC(SiMe3)C(O)O−] (6). The η2-complex 3 (titanacyclopropene) took up one molecule of carbon dioxide to afford the titanafuranone Cp*2Ti[OC(O)C(SiMe3)C(C⋮CSiMe3)−] (7)." @default.
• W2014292787 created "2016-06-24" @default.
• W2014292787 creator A5002807086 @default.
• W2014292787 creator A5018068134 @default.
• W2014292787 creator A5026947730 @default.
• W2014292787 creator A5031310989 @default.
• W2014292787 creator A5048209419 @default.
• W2014292787 creator A5083690730 @default.
• W2014292787 date "1999-08-31" @default.
• W2014292787 modified "2023-10-16" @default.
• W2014292787 title "Reactivity of Permethylzirconocene and Permethyltitanocene toward Disubstituted 1,3-Butadiynes: η⁴- vs η²-Complexation or C−C Coupling with the Permethyltitanocene" @default.
• W2014292787 cites W1501090357 @default.
• W2014292787 cites W1964159326 @default.
• W2014292787 cites W1965484920 @default.
• W2014292787 cites W1966339977 @default.
• W2014292787 cites W1966492274 @default.
• W2014292787 cites W1968732229 @default.
• W2014292787 cites W1971249591 @default.
• W2014292787 cites W1974439978 @default.
• W2014292787 cites W1974681897 @default.
• W2014292787 cites W1988239179 @default.
• W2014292787 cites W2003089474 @default.
• W2014292787 cites W2008974355 @default.
• W2014292787 cites W2009042850 @default.
• W2014292787 cites W2009172955 @default.
• W2014292787 cites W2010648263 @default.
• W2014292787 cites W2011767696 @default.
• W2014292787 cites W2019132898 @default.
• W2014292787 cites W2021700003 @default.
• W2014292787 cites W2022060968 @default.
• W2014292787 cites W2024027928 @default.
• W2014292787 cites W2028041715 @default.
• W2014292787 cites W2028114604 @default.
• W2014292787 cites W2031503686 @default.
• W2014292787 cites W2034901288 @default.
• W2014292787 cites W2037020729 @default.
• W2014292787 cites W2043925049 @default.
• W2014292787 cites W2045239883 @default.
• W2014292787 cites W2062083642 @default.
• W2014292787 cites W2062724023 @default.
• W2014292787 cites W2065847624 @default.
• W2014292787 cites W2071197005 @default.
• W2014292787 cites W2072261599 @default.
• W2014292787 cites W2077882891 @default.
• W2014292787 cites W2078929890 @default.
• W2014292787 cites W2081398438 @default.
• W2014292787 cites W2089355988 @default.
• W2014292787 cites W2128490571 @default.
• W2014292787 cites W2129901617 @default.
• W2014292787 cites W2130320369 @default.
• W2014292787 cites W2130890412 @default.
• W2014292787 cites W2131985765 @default.
• W2014292787 cites W2147587287 @default.
• W2014292787 cites W2148066840 @default.
• W2014292787 cites W2157443860 @default.
• W2014292787 cites W2162368872 @default.
• W2014292787 cites W2172064120 @default.
• W2014292787 cites W2320392526 @default.
• W2014292787 cites W2914037832 @default.
• W2014292787 cites W2949095833 @default.
• W2014292787 cites W2951715591 @default.
• W2014292787 cites W2951885559 @default.
• W2014292787 cites W2952006002 @default.
• W2014292787 cites W2952060744 @default.
• W2014292787 cites W2953024617 @default.
• W2014292787 cites W4206554286 @default.
• W2014292787 cites W971584605 @default.
• W2014292787 doi "https://doi.org/10.1021/ja991046z" @default.
• W2014292787 hasPublicationYear "1999" @default.
• W2014292787 type Work @default.
• W2014292787 sameAs 2014292787 @default.
• W2014292787 citedByCount "110" @default.
• W2014292787 countsByYear W20142927872012 @default.
• W2014292787 countsByYear W20142927872013 @default.
• W2014292787 countsByYear W20142927872014 @default.
• W2014292787 countsByYear W20142927872015 @default.
• W2014292787 countsByYear W20142927872016 @default.
• W2014292787 countsByYear W20142927872017 @default.
• W2014292787 countsByYear W20142927872018 @default.
• W2014292787 countsByYear W20142927872019 @default.
• W2014292787 countsByYear W20142927872020 @default.
• W2014292787 countsByYear W20142927872021 @default.
• W2014292787 countsByYear W20142927872022 @default.
• W2014292787 countsByYear W20142927872023 @default.
• W2014292787 crossrefType "journal-article" @default.
• W2014292787 hasAuthorship W2014292787A5002807086 @default.
• W2014292787 hasAuthorship W2014292787A5018068134 @default.
• W2014292787 hasAuthorship W2014292787A5026947730 @default.
• W2014292787 hasAuthorship W2014292787A5031310989 @default.
• W2014292787 hasAuthorship W2014292787A5048209419 @default.
• W2014292787 hasAuthorship W2014292787A5083690730 @default.
• W2014292787 hasConcept C142724271 @default.
• W2014292787 hasConcept C155647269 @default.
• W2014292787 hasConcept C178790620 @default.
• W2014292787 hasConcept C185592680 @default.
• W2014292787 hasConcept C204787440 @default.
• W2014292787 hasConcept C2776910235 @default.
• W2014292787 hasConcept C32909587 @default.

• next