460-40-2Relevant articles and documents
Preparation method of 3,3,3-trifluoropropionaldehyde
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Paragraph 0037; 0038, (2017/04/03)
The invention discloses a preparation method of 3,3,3-trifluoropropionaldehyde.The method comprises the steps that 1,1-dialkoxyl-3,3,3-trifluoropropane (CF3CH2CH(OR)2), acetic acid and a catalyst are added into a three-mouth flask, the temperature is increased to 90 DEG C-140 DEG C, and reacting under stirring is performed for 2 h-8 h, wherein R in 1,1-dialkoxyl-3,3,3-trifluoropropane (CF3CH2CH(OR)2) is selected from CH3, C2H5C3H7, C4H9, C5H11, C6H13, C7H15, C8H17, C9H19 and C10H21, the catalyst is selected from sulfuric acid, hydrochloric acid, p-toluenesulfonic acid, methanesulfonic acid and trifluoroacetic acid, and the mole ratio of 1,1-dialkoxyl-3,3,3-trifluoropropane to acetic acid to the catalyst is 1:(2-2.5):(0.1-0.6).
FLUORINE-CONTAINING CARBOXYLIC ACID DERIVATIVES
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Paragraph 0028-0029, (2020/10/16)
PROBLEM TO BE SOLVED: To provide fluorine-containing carboxylic acid derivatives useful as, e.g., active ingredients of pharmaceuticals for prevention and/or treatment of various pains such as chronic pain including neuropathic pain. SOLUTION: The invention provides fluorine-containing carboxylic acid derivatives represented by the general formula (I), or salts thereof or esters thereof. (R1 is a C1-5 alkyl group substituted by at least one fluorine atom, e.g., a 2-fluoroethyl group, a 2,2-difluoroethyl group, or the like; and R2 and R3 are each independently H, an alkyl group, an alkenyl group, or an acyl group.) COPYRIGHT: (C)2015,JPO&INPIT
Reaction of HppE with substrate analogues: Evidence for carbon-phosphorus bond cleavage by a carbocation rearrangement
Chang, Wei-Chen,Mansoorabadi, Steven O.,Liu, Hung-Wen
supporting information, p. 8153 - 8156 (2013/07/05)
(S)-2-Hydroxypropylphosphonic acid ((S)-2-HPP) epoxidase (HppE) is an unusual mononuclear non-heme iron enzyme that catalyzes the oxidative epoxidation of (S)-2-HPP in the biosynthesis of the antibiotic fosfomycin. Recently, HppE has been shown to accept (R)-1-hydroxypropylphosphonic acid as a substrate and convert it to an aldehyde product in a reaction involving a biologically unprecedented 1,2-phosphono migration. In this study, a series of substrate analogues were designed, synthesized, and used as mechanistic probes to study this novel enzymatic transformation. The resulting data, together with insights obtained from density functional theory calculations, are consistent with a mechanism of HppE-catalyzed phosphono group migration that involves the formation of a carbocation intermediate. As such, this reaction represents a new paradigm for biological C-P bond cleavage.