93190-52-4Relevant academic research and scientific papers
Synthesis method of aliphatic pinacol
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Paragraph 0015; 0029-0032, (2021/07/01)
The invention provides a synthesis method of aliphatic pinacol, the reaction condition is mild, the reaction yield is high, the reaction time is short, and the technical scheme is as follows: in an anhydrous tetrahydrofuran solvent, through the interactio
A samarium "soluble" anode: A new source of SmI2 reagent for electrosynthetic application
Sahloul, Kamar,Sun, Linhao,Requet, Alexandre,Chahine, Youhana,Mellah, Mohamed
supporting information, p. 11205 - 11209,5 (2012/12/11)
An electrochemical method to prepare solutions of samarium diiodide in THF is reported. The simple electrolysis of a samarium rod provides a rapid and straightforward in situ synthesis of SmI2. The electrogenerated complex catalyzes various C-C bond formations. The reagent is produced continuously (see scheme) and leads to efficient organic electrosynthesis with significantly smaller amounts of solvent than usually required. Copyright
A samarium "soluble" anode: A new source of SmI2 reagent for electrosynthetic application
Sahloul, Kamar,Sun, Linhao,Requet, Alexandre,Chahine, Youhana,Mellah, Mohamed
supporting information, p. 11205 - 11209 (2013/01/14)
An electrochemical method to prepare solutions of samarium diiodide in THF is reported. The simple electrolysis of a samarium rod provides a rapid and straightforward in situ synthesis of SmI2. The electrogenerated complex catalyzes various C-C bond formations. The reagent is produced continuously (see scheme) and leads to efficient organic electrosynthesis with significantly smaller amounts of solvent than usually required. Copyright
Efficient method for the preparation of pinacols derived from aromatic and aliphatic ketones by using low-valent titanium reagents in dichloromethane-pivalonitrile
Kagayama,Igarashi,Mukaiyama
, p. 657 - 665 (2007/10/03)
The reductive coupling reaction of aldehydes and ketones, including unsymmetrical aliphatic ketones, proceeded smoothly to give the corresponding pinacols in good to high yields under mild conditions by using combination of titanium(II) chloride and zinc or titanium(IV) chloride and zinc in dichloromethane-pivalonitrile. Meso-selective formation of the coupling products was observed in the cases of some aliphatic ketones. The diastereoselectivities of coupling products depend on both difference of bulkiness of 2-, and 2'-substituents of carbonyl group of the reactant, and overall steric effect around the carbonyl groups.
Efficient method for pinacol coupling of aromatic and aliphatic ketones by using titanium(II) chloride and zinc in the presence of pivalonitrile
Mukaiyama, Teruaki,Kagayama, Akifumi,Shiina, Isamu
, p. 1107 - 1108 (2007/10/03)
The reductive coupling reaction of aromatic and aliphatic ketones including acyclic aliphatic ketones proceeded smoothly to give the corresponding pinacols in good to high yields below room temperature by the combined use of titanium(II) chloride and zinc in the presence of pivalonitrile. Meso-selective formation of the coupling products was observed in the cases with some acyclic aliphatic ketones.
Effects of Substituents on the Strength of C-C Bonds, 11. - Thermolysis of Tetraalkylpinacol Dimethyl Ethers
Birkhofer, Hermann,Beckhaus, Hans-Dieter,Ruechardt, Christoph
, p. 1023 - 1030 (2007/10/02)
The products and the kinetics of the thermolysis reaction of the pinacol dimethyl ethers 1a-1f have been studied.A linear correlation between ΔG(excit.) (300 deg C) of thermolysis and the strain enthalpies HS of 1, or its release DS during dissociation into radicals 2, is observed.From this correlation a stabilization enthalpy HR = 2.1 +/- 0.5 kcal/mol is deduced for α-methoxyalkyl radicals 2 as compared to tert-alkyl radicals.Key Words: 1,2-Dialkoxyethanes, tetraalkyl- / Strain and structure / Thermolysis, kinetics of / Radicals, stability of
