A One-Pot, Two-Step Enzymatic Synthesis of L-Lactic Acid from Acetaldehyde

2002 ◽  
Vol 31 (7) ◽  
pp. 758-759 ◽  
Author(s):  
Masaya Miyazaki ◽  
Kazuya Ogino ◽  
Mitsukuni Shibue ◽  
Hiroyuki Nakamura ◽  
Hideaki Maeda
ChemInform ◽  
2010 ◽  
Vol 33 (46) ◽  
pp. no-no
Author(s):  
Masaya Miyazaki ◽  
Kazuya Ogino ◽  
Mitsukuni Shibue ◽  
Hiroyuki Nakamura ◽  
Hideaki Maeda

2010 ◽  
Vol 108 (2) ◽  
pp. 465-469 ◽  
Author(s):  
Xiaodong Tong ◽  
Bilal El-Zahab ◽  
Xueyan Zhao ◽  
Youyan Liu ◽  
Ping Wang

2019 ◽  
Vol 268 ◽  
pp. 07006 ◽  
Author(s):  
Sujitra Doungsri ◽  
P. Rattanaphanee ◽  
Aatichat Wongkoblap

Lactic acid (LA), one of the important biomass derived platform chemicals, has been used in food and chemical industries, especially in biodegradable polymer as polylactic acid (PLA). The aim of this work is to study the one-pot production of LA from cellulose by using different solid catalysts. The reaction was conducted in a high pressure batch reactor and the catalyst used in this study were ZrO2 and Al2O3. The reaction was carried out at temperature of 200oC for 6 hr. and under nitrogen pressure of 1 MP. It was found that the production yield of LA were 8.02% and 6.63%, when the ZrO2 and Al2O3 catalysts were used respectively. The result indicated that the ZrO2 may effect on the LA production because of the acid and base sites of the ZrO2. Therefore, the reaction pathways for conversion of cellulose into lactic acid have been investigated, and developed the new conditions to achieve the higher yield.


2008 ◽  
Vol 26 (4) ◽  
pp. 321-326 ◽  
Author(s):  
Sheng-Xi Feng ◽  
Shi-Zhong Liang ◽  
Wen-Yong Lou
Keyword(s):  

2018 ◽  
Vol 43 (3-4) ◽  
pp. 286-299 ◽  
Author(s):  
Osman Asheri ◽  
Sayyed Mostafa Habibi-Khorassani ◽  
Mehdi Shahraki

The kinetics of the reaction between para-substituted anilines and dimethyl acetylenedicarboxylate (DMAD) with derivatives of benzaldehyde for the one-pot formation of 3,4,5-substituted furan-2(5 H)-ones in the presence of lactic acid as a catalyst have been studied spectrophotometrically at different temperatures. A mechanism involving four steps was proposed for the reactions, all of which followed second-order kinetics. The partial orders with respect to substituted aniline and DMAD were one and one and the reactions revealed zero-order kinetics for benzaldehyde and its derivatives. Changing of substituents on benzaldehyde left rates of reaction unaffected. However, various substituents on aniline showed that para electron-withdrawing groups decreased the rate of reaction. According to investigation of an isokinetic relationship, a common mechanism exists for all studied substituents and a general mechanism can be formulated. Kinetic values ( k and Ea) and associated activation parameters (Δ G‡, Δ S‡ and Δ H‡) of the reactions were determined.


2010 ◽  
Vol 62 (3-4) ◽  
pp. 282-287 ◽  
Author(s):  
Yung-Hun Yang ◽  
Young-Bok Kang ◽  
Dae-Hee Kim ◽  
Tek-Hyung Lee ◽  
Sung-Hee Park ◽  
...  
Keyword(s):  

2017 ◽  
Vol 238 ◽  
pp. 698-705 ◽  
Author(s):  
Yu-Cai He ◽  
Chun-Xia Jiang ◽  
Ji-Wei Jiang ◽  
Jun-Hua Di ◽  
Feng Liu ◽  
...  
Keyword(s):  

Polymer ◽  
2016 ◽  
Vol 90 ◽  
pp. 342-350 ◽  
Author(s):  
Yui Yoshimura ◽  
Misato Nojiri ◽  
Maho Arimoto ◽  
Kiyoaki Ishimoto ◽  
Yuji Aso ◽  
...  

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