25697-56-7Relevant articles and documents
Guanidine compound for preventing and treating chronic pain medication (by machine translation)
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Paragraph 0149-0158, (2020/08/27)
The invention relates to a guanidine compound as shown in general formula (I) as a guanidine compound for preventing and treating chronic pain disease. A pharmaceutically acceptable salt thereof, a prodrug thereof, a solvate thereof, a deuterated substanc
Mechanism of the Solution-Phase Reaction of Alkyl Sulfides Atomic Hydrogen. Reduction via a 9-S-3 Radical Intermediate
Tanner, Dennis D.,Koppula, Sudha,Kandanarachchi, Pramod
, p. 4210 - 4215 (2007/10/03)
The low selectivity of benzyl alkyl sulfide fragmentation subsequent to its reaction with atomic hydrogen is indicative of a reaction that proceeds via an early transition state. The competitive reduction of a series of substituted-benzyl alkyl sulfides was insensitive to the substituent on the aromatic ring (ρ = -0.13, r = 0.99). The relative rates of fragmentation of a series of the substituted-benzyl alkyl sulfides gave a V-shaped Hammett plot. Both electron-donating and electron-withdrawing groups destabilized the transition state (ρ = +0.99, r = 0.999; ρ = -0.82, r = 0.992). Since the relative rates of disappearance of the alkyl benzyl sulfides are not substituent dependent, but the relative rates of fragmentation are, a 9-S-3 intermediate is preferred as the structure leading to products.
Correlation pKa - activitee catalitique des thiols dans la reeaction d'hydrolyse de l'aceetate de p-nitropheenyle
Brembilla, Alain,Roizard, Denis,Schoenleber, Jacqueline,Lochon, Pierre
, p. 2330 - 2336 (2007/10/02)
The kinetic study of the hydrolysis of p-nitrophenylacetate in the presence of primary thiols indicates the thiolate anion as the sole catalytic species.Comparison of the true second order constants (kRS-) reveals that purely aliphatic primary thiols behave differently from aromatic α-substituted primary thiols.In the latter group a correlation can be established between the true second order rate constants and the pKSH values by means of the Broensted equation log kRS- = βpKSH + C, with β equal to 0.40 and C equal to -0.85.