Dibutyl oxalate

Freesing point Non-volatile matter Solubility of water in solvoit at25 C 

Miseible witliout turbidity with 20 volumes 60 B5 gasoline -30j0 C 

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Dibutyl oxalate 0.99 104 EALSE FALSE FALSE FALSE... 

It is interesting that hydrogenation of the intermediate dibutyl oxalate would produce the glycol and the starting butanol. 

Based on their alkyl nitrite technology, Ube developed their own new proeess for the manufacture of dialkyl oxalates by oxidative carbonylation of alcohols. This process is a two-step reaction, in which alkyl nitrite acts as an reoxidant for the palladium catalyst system, similarly to the situation in the preparation of dialkyl carbonates mentioned above. The published patent literature does not make it possible to give exact details about the Ube industrial plant in Yamaguchi, Japan, which has produced several thousands tons of dibutyl oxalate annually since 1978. The first step of the manufacturing process for dialkyl oxalates is the preparation of the gaseous alkyl nitrite from NO, oxygen, and... 

Derivation Condensation of mesityl oxide and dibutyl oxalate in the presence of sodium ethoxide. Grade Technical. 

Figure 8.1 Flow diagram of Ube liquid phase process of dibutyl oxalate [18],...

Dibutyl carbonate is a by-product of the Ube dibutyl oxalate process, and conditions that lead to a higher oxalate carbonate ratio include lower reaction temperatures, lower concentrations of butanol, and higher CO pressure. A reaction mechanism for dibutyl oxalate and carbonate formation has been proposed based on the observed trends for selectivity and kinetic studies (Scheme 8.4) [18, 20]. Pd° species are believed to favor oxalate formation, while Pd species favor carbonate formation (step la/2a). Oxalate formation starts with facile oxidative addition of "BuONO to Pd" (step lb) and is followed by the rate-limiting CO insertion (step Ic). 

Butyl oleate sulfate Butyl oleate, sulfated. See Sulfated butyl oleate Butyl oxalate. See Dibutyl oxalate Butyloxepanone... 

Dibutyl ethanedioate. See Dibutyl oxalate N,N-Dibutylethanolamine. See N,N-Di-n-butylamino ethanol Dibutyl ether CAS 142-96-1 UN 1149 (DOT)... 

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