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Volumn 132, Issue 46, 2010, Pages 16599-16609

Mechanistic and computational study of a palladacycle-catalyzed decomposition of a series of neutral phosphorothioate triesters in methanol

Author keywords

[No Author keywords available]

Indexed keywords

CATALYZED REACTIONS; COMPLEX MECHANISMS; COMPUTATIONAL STUDIES; DFT CALCULATION; LEAVING GROUPS; METHANOL SOLUTION; PALLADACYCLES; PHOSPHORANES; PHOSPHOROTHIOATES; RATE-LIMITING STEPS; TRANSITION STATE; TRIESTERS; TRIFLATES; TRIMETHYL; TRIMETHYL PHOSPHATE;

EID: 78649911497     PISSN: 00027863     EISSN: 15205126     Source Type: Journal    
DOI: 10.1021/ja107144c     Document Type: Article
Times cited : (26)

References (76)
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    • note
    • spH 8.75.
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    • For the description and treatment of "pH" in MeOH, see
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    • Gibson, G.1    Neverov, A.A.2    Brown, R.S.3
  • 22
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    • Pseudofirst-order conditions require either that the [catalyst] is at least 10 times larger than substrate or that the concentration of the catalyst [ 3 ] is constant during the reaction. Since the equilibrium binding of 3 and substrate and its methanolytic product is weak and there is no product inhibition, pseudo-first-order conditions are satisfied since [ 3 ] remains constant.
    • Pseudofirst-order conditions require either that the [catalyst] is at least 10 times larger than substrate or that the concentration of the catalyst [ 3 ] is constant during the reaction. Since the equilibrium binding of 3 and substrate and its methanolytic product is weak and there is no product inhibition, pseudo-first-order conditions are satisfied since [ 3 ] remains constant.
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    • note
    • (init) is the initial absorbance without any added trimethyl phosphorothioate, and K is the equilibrium constant described in Scheme 2. The path length of the UV-cell used for the spectrophotometric titration is 1 cm.
  • 36
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    • The NLLSQ equation defined for two β values and a β for equilibrium binding of the catalyst and substrate has the following form k 2 obs = K b k 1 k 2 / (k - 1 + k 2) = C b C 1 C 2 10 (β b + β 1 + β 2) p K a / (C - 1 10 β - 1 p K a + C 2 10 β 2 p K a) presented as eq 3 in
    • The NLLSQ equation defined for two β values and a β for equilibrium binding of the catalyst and substrate has the following form k 2 obs = K b k 1 k 2 / (k - 1 + k 2) = C b C 1 C 2 10 (β b + β 1 + β 2) p K a / (C - 1 10 β - 1 p K a + C 2 10 β 2 p K a) presented as eq 3 in
  • 49
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    • 2P - S group between oxyanion nucleophiles in water of -1.40., Unpublished results.
    • 2P - S group between oxyanion nucleophiles in water of -1.40. Harkness, R., Edwards, D. E., and Brown, R. S., Unpublished results.
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    • eq.
    • eq.
  • 51
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    • lg values are found
    • lg values are found
  • 64
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    • Ideal Gas at 1 atm and 298 K.
    • Ideal Gas at 1 atm and 298 K.
  • 65
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    • Standard State at 1 M and 298 K.
    • Standard State at 1 M and 298 K.
  • 69
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    • 2) and [methanol] in pure solvent.
    • 2) and [methanol] in pure solvent.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.