Synthesis of α-Hydroxy Ketones from Vicinal Diols by Selective Dehydrogenation over Ir–ReOx/SiO2 Catalyst

2014 ◽  
Vol 43 (3) ◽  
pp. 334-336 ◽  
Author(s):  
Hiraku Sato ◽  
Masazumi Tamura ◽  
Yoshinao Nakagawa ◽  
Keiichi Tomishige
Keyword(s):  
Hydroxy Ketones ◽  
Vicinal Diols

scholarly journals Synthesis of α-hydroxy ketones and vicinal (R,R)-diols by Bacillus clausii DSM 8716T butanediol dehydrogenase

RSC Advances ◽  
2020 ◽  
Vol 10 (21) ◽  
pp. 12206-12216 ◽  
Author(s):  
Lukas Muschallik ◽  
Denise Molinnus ◽  
Melanie Jablonski ◽  
Carina Ronja Kipp ◽  
Johannes Bongaerts ◽  
...  
Keyword(s):  
Bacillus Clausii ◽  
Hydroxy Ketones ◽  
Vicinal Diols ◽  
Butanediol Dehydrogenase

Reduction of symmetric or asymmetric vicinal diketones with BcBDH leads to the synthesis of either α-hydroxyketones or vicinal diols.

scholarly journals Oxidation of Vicinal Diols to α-Hydroxy Ketones with H2 O2 and a Simple Manganese Catalyst

2017 ◽  
Vol 2017 (46) ◽  
pp. 6919-6925 ◽  
Author(s):  
Francesco Mecozzi ◽  
Jia Jia Dong ◽  
Pattama Saisaha ◽  
Wesley R. Browne
Keyword(s):  
Hydroxy Ketones ◽  
Vicinal Diols

Biocatalytic production of alpha-hydroxy ketones and vicinal diols by yeast and human aldo–keto reductases

2013 ◽  
Vol 202 (1-3) ◽  
pp. 195-203 ◽  
Author(s):  
Eduard Calam ◽  
Sergio Porté ◽  
M. Rosario Fernández ◽  
Jaume Farrés ◽  
Xavier Parés ◽  
...  
Keyword(s):  
Hydroxy Ketones ◽  
Vicinal Diols ◽  
Biocatalytic Production

Synthesis of α-hydroxy ketones and vicinal diols with the Bacillus licheniformis DSM 13T butane-2,3-diol dehydrogenase

2020 ◽  
Vol 324 ◽  
pp. 61-70
Author(s):  
Lukas Muschallik ◽  
Carina Ronja Kipp ◽  
Inga Recker ◽  
Johannes Bongaerts ◽  
Martina Pohl ◽  
...  
Keyword(s):  
Bacillus Licheniformis ◽  
Hydroxy Ketones ◽  
Vicinal Diols

Imine Based Self-Healing Hydrogel Triggered by Periodate

2020 ◽  
Author(s):  
Alexis Wolfel ◽  
Cecilia Inés Alvarez Igarzabal ◽  
Marcelo Ricardo Romero
Keyword(s):  
Functional Groups ◽  
Time Window ◽  
Crosslinking Reaction ◽  
Self Healing ◽  
Swelling Properties ◽  
Covalent Bonds ◽  
Smart Systems ◽  
Primary Amino ◽  
Vicinal Diols ◽  
Aldehyde Groups

<p>Design of materials with novel sensitivities and smart behaviour is important for the development of smart systems with automated responsiveness. We have recently reported the synthesis of hydrogels, cross-linked by <i>N,N'</i>-diallyltartardiamide (DAT). The covalent DAT-crosslinking points have vicinal diols which can be easily cleaved with periodate, generating valuable a-oxo-aldehyde functional groups, useful for further chemical modification. Based on those findings, we envisioned that a self-healable hydrogel could be obtained by incorporation of primary amino functional groups, from <a>2-aminoethyl methacrylate </a>hydrochloride (AEMA), coexisting with DAT into the same network. The a-oxo-aldehyde groups generated after the reaction with periodate would arise in the immediate environment of amine groups to form imine cross-links. For this purpose, DAT-crosslinked hydrogels were synthesized and carefully characterized. The cleavage of DAT-crosslinks with periodate promoted changes in the mechanical and swelling properties of the materials. As expected, a self-healing behavior was observed, based on the spontaneous formation of imine covalent bonds. In addition, we surprisingly found a combination of fast vicinal diols cleavage and a low speed self-crosslinking reaction by imine formation. Consequently, it was found a time-window in which a periodate-treated polymer was obtained in a transient liquid state, which can be exploited to choose the final shape of the material, before automated gelling. The singular properties attained on these hydrogels could be useful for developing sensors, actuators, among other smart systems.</p>

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