2806-84-0Relevant articles and documents
Novel synthetic routes of 3-methoxypropanal from glycerol
Chen, Jin,Du, Xiaohua
, p. 1376 - 1380 (2011)
A new synthesis of 3-methoxypropanal from glycerol was presented. With this new approach, the conversion of glycerol to 3-methoxypropanal can be effected in moderate yield using catalysts of copper sulfate and polyethylene glycol (PEG).
Reactivity of some tertiary chlorides with olefinic and methoxy neighboring groups. A case of extended π, n-participation
Juric, Sandra,Kronja, Olga
, p. 556 - 560 (2002)
Tertiary 2-chloro-2-methyl-5-methoxypentane (2) solvolyzes with a significantly reduced secondary β-deuterium kinetic isotope effect (substrate with two trideuteromethyl groups), and with smaller entropy and enthalpy of activation than the reference saturated analog 4 [kH/kD = 1.35±0.01 VS kH/kD = 1.79 ± 0.01; ΔΔH≠ = -11 kJ mol-1; ΔΔS≠ = -30 J mol-1 K-1, in 80% (v/v) aqueous ethanol], indicating participation of the methoxy group in the rate-determining step. 2-Chloro-2,5-dimethyl-8-methoxy-5(E)-octene (3) solvolyzes with a further reduction of the isotope effect, and drastically smaller activation parameters [kH/kD = 1.16 ± 0.01; ΔΔH≠ = -33 kJ mol-1; ΔΔS≠ = -106 J mol-1 K-1, in 80% (v/v) aqueous ethanol], suggesting that the solvolysis of 3 proceeds with extended π, n-participation, i.e. the assistance of both neighboring groups occurs in the rate-determining step. Copyright
Dinuclear half-sandwich iridium complex containing bisimine ligand and preparation method and application thereof
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Paragraph 0036; 0037; 0038, (2019/04/17)
The invention belongs to the technical field of synthetic chemistry and relates to a dinuclear half-sandwich iridium complex containing bisimine ligand and a preparation method and application thereof. Pentamethylcyclopentadienyl iridium chloride dimer [(C5Me5)IrCl2]2 is used as a raw material subjected to reaction with pyrrole ring-containing bisimine ligand under alkaline conditions to prepare the finished N,N-coordinated dinuclear half-sandwich iridium complex. The synthetic process herein is simple and green and has good selectivity and high yield; the dinuclear half-sandwich iridium complex herein has stable physio-chemical properties and thermal stability and the like and shows efficient catalytic activity in the reaction where halogenated hydrocarbons are oxidized into correspondingaldehydes.
Gas-Phase Reaction of Methyl n-Propyl Ether with OH, NO3, and Cl: Kinetics and Mechanism
Zhu, Jianqiang,Wang, Shuyan,Tsona, Narcisse T.,Jiang, Xiaotong,Wang, Yifeng,Ge, Maofa,Du, Lin
, p. 6800 - 6809 (2017/09/23)
Rate constants at room temperature (293 ± 2 K) and atmospheric pressure for the reaction of methyl n-propyl ether (MnPE), CH3OCH2CH2CH3, with OH and NO3 radicals and the Cl atom have been determined in a 100 L FEP-Teflon reaction chamber in conjunction with gas chromatography-flame ionization detector (GC-FID) as the detection technique. The obtained rate constants k (in units of cm3 molecule-1 s-1) are (9.91 ± 2.30) × 10-12, (1.67 ± 0.32) × 10-15, and (2.52 ± 0.14) × 10-10 for reactions with OH, NO3, and Cl, respectively. The products of these reactions were investigated by gas chromatography-mass spectrometry (GC-MS), and formation mechanisms are proposed for the observed reaction products. Atmospheric lifetimes of the studied ether, calculated from rate constants of the different reactions, reveal that the dominant loss process for MnPE is its reaction with OH, while in coastal areas and in the marine boundary layer, MnPE loss by Cl reaction is also important.
