Results 71 to 80 of about 23,079 (207)

Chemoselectivity and Enantioselectivity in the Conjugate Reduction of Cinnamate Esters and a Tandem Conjugate Reduction‐Ester Hydrogenation Using Manganese Catalysts

European Journal of Organic Chemistry, EarlyView.
An improved synthesis of a manganese catalyst used for hydrogenation of ketones, esters and imines is reported. The catalyst has now been found to effect tandem conjugate reduction‐ester hydrogenations with very low amounts of allylic alcohol by‐products.
José A. Fuentes, Matthew L. Clarke
wiley   +1 more source

Thermal high pressure hydrogenolysis II. The thermal high pressure hydrocracking of fluorene [PDF]

, 1973
The thermal hydrocracking of fluorene was investigated in the temperature range of 400 to 480 °C and hydrogen pressures of up to 375 atm. As main reaction products were found 2-methylbiphenyl, biphenyl, toluene and benzene.
Konter, Willem A.N., Oltay, Ernst, Penninger, Johannes M.L.   +2 more
core   +4 more sources

Synthesis of a Carbon‐Linked Acyldepsipeptide Derivative

European Journal of Organic Chemistry, EarlyView.
The synthesis of a methylene‐linked acyldepsipeptide (ADEP) is reported. Success relied upon an improve method to generate a versatile vinyl glycine methyl ester synthon and a rationally optimized Grubb’s metathesis. NMR and in silico studies revealed an unusual trans–trans proline orientation for this new unnatural ADEP analog, advancing the ...
Katelyn G. Stevens-Davis, Xiaozheng Dou, Bo Hu, Yangxiong Li, Jiayuan Miao, Yu-Shan Lin, Adam S. Duerfeldt   +6 more
wiley   +1 more source

Solvolysis and Mild Hydrogenolysis of Lignin Pyrolysis Bio-Oils for Bunker Fuel Blends

Energies
The projected depletion of fossil resources has initiated research on new and sustainable fuels which can be utilized in combination with conventional fuels. Lignocellulosic biomass, and more specifically lignin, can be depolymerized towards phenolic and
Antigoni G. Margellou, Fanny Langschwager, Christina P. Pappa, Ana C. C. Araujo, Axel Funke, Konstantinos S. Triantafyllidis   +5 more
doaj   +1 more source

Cellulose Conversion Into Hexitols and Glycols in Water: Recent Advances in Catalyst Development

Frontiers in Chemistry, 2019
Conversion of biomass cellulose to value-added chemicals and fuels is one of the most important advances of green chemistry stimulated by needs of industry.
Oleg V. Manaenkov, Olga V. Kislitsa, Valentina G. Matveeva, Valentina G. Matveeva, Ester M. Sulman, Ester M. Sulman, Mikhail G. Sulman, Mikhail G. Sulman, Lyudmila M. Bronstein, Lyudmila M. Bronstein, Lyudmila M. Bronstein   +10 more
doaj   +1 more source

Stereoselective Chemoenzymatic Synthesis Metaraminol Involving Gold‐Catalysed Alkyne Hydration and Carbonyl Biotransamination

European Journal of Organic Chemistry, EarlyView.
A chemoenzymatic synthesis of (1R,2S)‐metaraminol was developed by combining gold(I)‐catalysed alkyne hydration and stereoselective biotransamination in a sequential one‐pot process. Various phenol protection strategies were considered in oxidation‐reduction sequences, providing access to enantiopure propargylic alcohols as starting materials for ...
Lorena Escot, Iván Lavandera, Vicente Gotor‐Fernández   +2 more
wiley   +1 more source

Free-energy profiles along reduction pathways of MoS2 M-edge and S-edge by dihydrogen: a first-principles study

, 2011
We present the results of DFT calculations of free energy profiles along the reaction pathways starting from 50% coverage of MoS2 M-edge and 100% coverage of S-edge by sulfur, and leading to 37% coverage, i.e.
Prodhomme, Pierre-Yves, Raybaud, Pascal, Toulhoat, Hervé   +2 more
core   +1 more source

Metal-assisted reactions. Part 25. Heterogeneous and homogeneous catalytic transfer hydrogenolysis of allyloxytetrazoles to yield alkenes or alkanes [PDF]

, 1996
Transfer hydrogenolysis of 5-allyloxy- 1-phenyltetrazoles using either a heterogeneous or a homogeneous palladium catalyst and a hydrogen donor leads to cleavage of the allyloxy C-O bond to yield an alkane or an alkene and 1-phenyltetrazolone, depending ...
Cristiano, Maria Lurdes Santos, Johnstone, Robert A. W., Price, Peter J.   +2 more
core   +1 more source

Fluctuating β‐Sheet Secondary Structure in DS119 Explains the Small Effects of Backbone N‐Amination on Thermal Stability

Journal of Peptide Science, Volume 32, Issue 5, May 2026.
Residues with backbone N‐amination have been introduced into a region of parallel β‐sheet secondary structure. Contrary to predictions, the N‐amination of Trp9 or Phe33 did not give an increase in the thermal stability of DS119. MD simulations suggest this is due to the highly fluctuating nature of the β‐sheet region. ABSTRACT The miniprotein DS119 has
Yushi Qiao, Syrah K. Starnes, Jožica Dolenc, Juan R. Del Valle, Lorna J. Smith   +4 more
wiley   +1 more source

Catalytic Production of Oxygenated and Hydrocarbon Chemicals From Cellulose Hydrogenolysis in Aqueous Phase

Frontiers in Chemistry, 2020
As the most abundant polysaccharide in lignocellulosic biomass, a clean and renewable carbon resource, cellulose shows huge capacity and roused much attention on the methodologies of its conversion to downstream products, mainly including platform ...
Haosheng Xin, Haosheng Xin, Haosheng Xin, Haosheng Xin, Xiaohong Hu, Xiaohong Hu, Xiaohong Hu, Xiaohong Hu, Chiliu Cai, Chiliu Cai, Chiliu Cai, Haiyong Wang, Haiyong Wang, Haiyong Wang, Changhui Zhu, Changhui Zhu, Changhui Zhu, Changhui Zhu, Song Li, Song Li, Song Li, Song Li, Zhongxun Xiu, Xinghua Zhang, Xinghua Zhang, Xinghua Zhang, Qiying Liu, Qiying Liu, Qiying Liu, Qiying Liu, Longlong Ma, Longlong Ma, Longlong Ma   +32 more
doaj   +1 more source