1977
DOI: 10.1016/s0022-328x(00)90661-2
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Carbanion mechanisms

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Cited by 32 publications
(16 citation statements)
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“…The reactions in DME and Et20, however, proceeded only to partial completion and solutions of DPM-Lif in these solvents were obtained from the THF solution by removal of THF under vacuo and replacement by the desired solvent. Diphenylmethylpotassium (DPM-Kf) was obtained by reaction of DPM with potassium amide in THF or DME (13). The Et20 solution of DPM-Kf was prepared from the THF solution as in the case of DPM-Li'l Et20 above.…”
Section: Resultsmentioning
confidence: 99%
“…The reactions in DME and Et20, however, proceeded only to partial completion and solutions of DPM-Lif in these solvents were obtained from the THF solution by removal of THF under vacuo and replacement by the desired solvent. Diphenylmethylpotassium (DPM-Kf) was obtained by reaction of DPM with potassium amide in THF or DME (13). The Et20 solution of DPM-Kf was prepared from the THF solution as in the case of DPM-Li'l Et20 above.…”
Section: Resultsmentioning
confidence: 99%
“…To ascertain how the modular electronic structure of 1 influences its intrinsic chemical reactivity, we explored the capture of ammonia with 1 o and 1 c . The activation of NH 3 remains an important yet challenging synthetic endeavor due to the relatively high basicity20 of the compound (p K a =38) and NH bond strength21 (107 kcal mol −1 ); indeed, few isolable carbenes are known to activate NH 3 10. The addition of gaseous NH 3 to a C 6 D 6 solution of 1 o produced no noticeable change, as determined by 1 H NMR spectroscopy.…”
Section: Methodsmentioning
confidence: 99%
“…It is well known that the surface of g-C 3 N 4 is terminated by -NH/NH 2 groups 25 whose acidity is much lower than that of -OH typically found on the surface of metal oxides (pK a = 38 for NH 3 ; pK a = 14 for H 2 O). 26,27 As a result, no significant deprotonation occurs at pH = 12.8, explaining the lack of negative charging and the sub-Nernstian Fermi level shift. This results in an increased driving force of 0.18 eV for hole transfer from g-C 3 N 4 to methanol (Fig.…”
mentioning
confidence: 94%