FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4386766627> ?p ?o ?g. }

• W4386766627 endingPage "2825" @default.
• W4386766627 startingPage "2813" @default.
• W4386766627 abstract "The present study details the synthesis and characterization of novel Zn(II)-based organocations of the type [IPr*-Zn-R]+ (IPr* = 1,3-bis[2,6-bis(diphenylmethyl)-4-methylphenyl]-1,3-dihydro-2H-imidazol-2-ylidene; R = alkyl, aryl) and their use in styrene, alkyne, and carbonyl hydrosilylation catalysis. The neutral IPr* adducts [IPr*-ZnR2] (1, R = Me; 2, R = Et; 3, R = Ph) were prepared by the reaction of IPr* with an equimolar amount of ZnR2 and isolated in good yields. Despite the severe steric hindrance of IPr*, compounds 1–3 are robust in solution, reflecting the bulky-yet-flexible nature of carbene IPr*. Adducts 1 and 2 can be readily ionized by [Ph3C][B(C6F5)4] to produce two-coordinate Zn(II) cations [IPr*-ZnMe]+ ([4]+) and [IPr*-ZnEt]+ ([5]+), both isolated in high yields (>85%) as [B(C6F5)4]− salts. Interestingly, the more Lewis acidic cation [IPr*-ZnC6F5]+ ([6]+), prepared by reaction of [4][B(C6F5)4] with a B(C6F5)3/HSiEt3 mixture, is further stabilized through π arene interactions with Zn(II), indicating that IPr* may provide steric and electronic stabilization to Zn(II). The latter certainly explains the improved hydrolytic stability of the salt [6][B(C6F5)4]. Zn cations of the [IPr*-ZnR]+ series are less Lewis acidic than their [IPr-ZnR]+, yet they display a distinct reactivity in hydrosilylation catalysis. Thus, cation [6]+ catalyzes at room-temperature styrene and alkyne hydrosilylation with HSiEt3 as the silane source. Remarkably, it is also a highly effective ketone/aldehyde hydrosilylation catalysis for a rather broad silane and ketone scope and performs much better than [IPr-ZnR]+ systems. The density functional theory (DFT)-estimated mechanism for the hydrosilylation of benzophenone by [6]+ suggests that Si–H activation by the cationic Zn(II) center is required for the catalysis to proceed. Overall, the improved hydrolytic stability and straightforward synthesis of a well-defined Zn-based Lewis acid such as [6][B(C6F5)4] may promote its further use in various Lewis-acid-mediated transformations." @default.
• W4386766627 created "2023-09-16" @default.
• W4386766627 creator A5035082354 @default.
• W4386766627 creator A5080050711 @default.
• W4386766627 creator A5084817853 @default.
• W4386766627 creator A5090064099 @default.
• W4386766627 date "2023-09-15" @default.
• W4386766627 modified "2023-10-10" @default.
• W4386766627 title "Robust Two-Coordinate Zn(II) Organocations Supported by Bulky-Yet-Flexible IPr* Carbene: Synthesis, Structure, and Distinct Reactivity in Hydrosilylation Catalysis" @default.
• W4386766627 cites W1964885234 @default.
• W4386766627 cites W1977759754 @default.
• W4386766627 cites W1979160415 @default.
• W4386766627 cites W1982049005 @default.
• W4386766627 cites W1992927592 @default.
• W4386766627 cites W1995545972 @default.
• W4386766627 cites W1996714173 @default.
• W4386766627 cites W1997113667 @default.
• W4386766627 cites W2002969486 @default.
• W4386766627 cites W2003555872 @default.
• W4386766627 cites W2005370295 @default.
• W4386766627 cites W2010790975 @default.
• W4386766627 cites W2014129813 @default.
• W4386766627 cites W2015344254 @default.
• W4386766627 cites W2015402899 @default.
• W4386766627 cites W2025199807 @default.
• W4386766627 cites W2025429462 @default.
• W4386766627 cites W2025514094 @default.
• W4386766627 cites W2039410044 @default.
• W4386766627 cites W2064998085 @default.
• W4386766627 cites W2086296254 @default.
• W4386766627 cites W2097819297 @default.
• W4386766627 cites W2104057453 @default.
• W4386766627 cites W2106332096 @default.
• W4386766627 cites W2108073196 @default.
• W4386766627 cites W212252232 @default.
• W4386766627 cites W2126383912 @default.
• W4386766627 cites W2134884056 @default.
• W4386766627 cites W2138382134 @default.
• W4386766627 cites W2141665100 @default.
• W4386766627 cites W2156475195 @default.
• W4386766627 cites W2160751042 @default.
• W4386766627 cites W2174282865 @default.
• W4386766627 cites W2223635972 @default.
• W4386766627 cites W2315752527 @default.
• W4386766627 cites W2316262109 @default.
• W4386766627 cites W2316800661 @default.
• W4386766627 cites W2320925108 @default.
• W4386766627 cites W2328100592 @default.
• W4386766627 cites W2330235107 @default.
• W4386766627 cites W2330293402 @default.
• W4386766627 cites W2331010073 @default.
• W4386766627 cites W2332278224 @default.
• W4386766627 cites W2411671559 @default.
• W4386766627 cites W2478847312 @default.
• W4386766627 cites W2498190262 @default.
• W4386766627 cites W2518895129 @default.
• W4386766627 cites W2522417531 @default.
• W4386766627 cites W2561907941 @default.
• W4386766627 cites W2591514847 @default.
• W4386766627 cites W2612523788 @default.
• W4386766627 cites W2754013900 @default.
• W4386766627 cites W2765921274 @default.
• W4386766627 cites W2766488582 @default.
• W4386766627 cites W2783263235 @default.
• W4386766627 cites W2805329029 @default.
• W4386766627 cites W2808590181 @default.
• W4386766627 cites W2811401237 @default.
• W4386766627 cites W2905591948 @default.
• W4386766627 cites W2926036315 @default.
• W4386766627 cites W2939144999 @default.
• W4386766627 cites W2944569455 @default.
• W4386766627 cites W2951656426 @default.
• W4386766627 cites W3002118643 @default.
• W4386766627 cites W3022726077 @default.
• W4386766627 cites W3043483907 @default.
• W4386766627 cites W3043937367 @default.
• W4386766627 cites W3091856972 @default.
• W4386766627 cites W3092569694 @default.
• W4386766627 cites W3125075588 @default.
• W4386766627 cites W3144007166 @default.
• W4386766627 cites W3153111101 @default.
• W4386766627 cites W3161192462 @default.
• W4386766627 cites W3168262839 @default.
• W4386766627 cites W3180128532 @default.
• W4386766627 cites W3193854877 @default.
• W4386766627 cites W3217659855 @default.
• W4386766627 cites W4206595747 @default.
• W4386766627 cites W4224437635 @default.
• W4386766627 cites W4291130568 @default.
• W4386766627 cites W4376609934 @default.
• W4386766627 doi "https://doi.org/10.1021/acs.organomet.3c00282" @default.
• W4386766627 hasPublicationYear "2023" @default.
• W4386766627 type Work @default.
• W4386766627 citedByCount "0" @default.
• W4386766627 crossrefType "journal-article" @default.
• W4386766627 hasAuthorship W4386766627A5035082354 @default.
• W4386766627 hasAuthorship W4386766627A5080050711 @default.
• W4386766627 hasAuthorship W4386766627A5084817853 @default.

• next