7403-65-8Relevant academic research and scientific papers
Preparation method of 2, 2, 4-trimethyl-3-hydroxy ethyl valerate, water-based paint for containers and preparation method of water-based paint
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Paragraph 0047; 0052-0055; 0056; 0061-0064; 0065; 0070-0073, (2020/03/06)
The invention relates to the technical field of organic compound synthesis and application, in particular to a preparation method of 2, 2, 4-trimethyl-3-hydroxy ethyl valerate, a water-based paint containing 2, 2, 4-trimethyl-3-hydroxy ethyl valerate for containers and a preparation method of the water-based paint. The preparation method of 2, 2, 4-trimethyl-3-hydroxy ethyl valerate comprises thefollowing steps: 1) carrying out aldol condensation reaction on isobutyraldehyde under the action of a basic catalyst to generate 2, 2, 4-trimethyl-3-hydroxyvaleraldehyde, and carrying out oxidation reaction on the obtained 2, 2, 4-trimethyl-3-hydroxyvaleraldehyde and H2O2 to obtain 2, 2, 4-trimethyl-3-hydroxyvaleric acid; and 2) carrying out reaction on the 2, 2, 4-trimethyl-3-hydroxyvaleric acidprepared in the step 1) and ethanol under the action of a strong acid catalyst to obtain 2, 2, 4-trimethyl-3-hydroxy ethyl valerate. The preparation method of 2, 2, 4-trimethyl-3-hydroxy ethyl valerate has the advantages that the reaction product is single, multi-step separation is not needed, operation is simple, and meanwhile, the invention also provides the water-based paint containing 2, 2, 4-trimethyl-3-hydroxy ethyl valerate for containers and the preparation method of the water-based paint.
1,4-Bis(trimethylsilyl)-1,4-diaza-2,5-cyclohexadienes as strong salt-free reductants for generating low-valent early transition metals with electron-donating ligands
Saito, Teruhiko,Nishiyama, Haruka,Tanahashi, Hiromasa,Kawakita, Kento,Tsurugi, Hayato,Mashima, Kazushi
supporting information, p. 5161 - 5170 (2014/04/17)
Electron-rich organosilicon compounds, such as 1,4-bis(trimethylsilyl)-1,4- diaza-2,5-cyclohexadiene (2a), 2,5-dimethyl-1,4-bis(trimethylsilyl)-1,4-diaza-2, 5-cyclohexadiene (2b), 2,3,5,6-tetramethyl-1,4-bis(trimethylsilyl)-1,4-diaza-2, 5-cyclohexadiene (
Metal chloride-promoted aldol reaction of α-dimethylsilylesters with aldehydes, ketones, and α-enones
Miura, Katsukiyo,Nakagawa, Takahiro,Hosomi, Akira
, p. 1917 - 1921 (2007/10/03)
In the presence of a catalytic amount of LiCl, α-dimethylsilylesters (α-DMS-esters) 1 smoothly reacted with various aldehydes at 30°C to give aldols in good to high yields. On the other hand, the aldol reaction with ketones was effectively promoted by MgCl2 rather than by LiCl. α-Enones also underwent the metal chloride-promoted addition of 1 at the carbonyl carbon or β-carbon. Georg Thieme Verlag Stuttgart.
Reformatsky Reaction in Water: Evidence for a Radical Chain Process
Bieber, Lothar W.,Malvestiti, Ivani,Storch, Elisabeth C.
, p. 9061 - 9064 (2007/10/03)
The Reformatsky reaction of 2-bromo esters and carbonyl compounds in the presence of zinc can be carried out in concentrated aqueous salt solutions without any cosolvent. The reaction of bromoacetates is greatly enhanced by catalytic amounts of benzoyl peroxide or peracids and gives satisfactory yields with aromatic aldehydes. Preparative yields comparable to those of the traditional procedure are obtained with ethyl 2-bromoisobutyrate. This ester needs no catalyst and reacts even with saturated aldehydes and aromatic ketones, although in low yields. A radical chain mechanism, initiated by electron abstraction from the organometallic Reformatsky reagent, is proposed. Two nonchain pathways, involving radicals directly produced on the metal surface, may compete, especially in the case of secondary and tertiary halides.
Boron Trifluoride Promoted Aldol Reaction of Silyl Ketene Acetals with the Intermediate Generated by the DIBALH Reduction of Carboxylic Acid Esters
Kiyooka, Syun-ichi,Shirouchi, Masashi
, p. 1 - 2 (2007/10/02)
The intermediate generated by the DIBALH reduction of carboxylic acid esters undergoes a boron trifluoride promoted aldol reaction with silyl ketene acetals to afford the corresponding β-hydroxy carboxylic acid esters in good yield.
