Results 91 to 100 of about 3,457 (280)

Sequential Cross-Coupling of 1,4-Bissilylbutadienes:  Synthesis of Unsymmetrical 1,4-Disubstituted 1,3-Butadienes

open access: yes, 2016
A mild and general and stereospecific cross-coupling reaction of unsymmetrical 1,4-bissilyl-1,3-butadienes has been accomplished. By the use of either a benzyldimethylsilyl or 2-thienyldimethylsilyl unit at one end of the dienylsilanol, a selective cross-
Steven A. Tymonko (1508392)   +1 more
core   +1 more source

Harnessing machine learning and optimization for informed chemical engineering decisions: A styrene reactor analysis

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
This study shows that integrating multiple machine learning models with optimization and decision‐making improves chemical process design, and that a consensus‐based strategy across models provides more robust and reliable operating recommendations than any single model, especially under limited or noisy data conditions.
Farough Agin   +2 more
wiley   +1 more source

Recent Zeolite Modifications in Bifunctional Catalysts for Carbon Dioxide Hydrogenation to Aromatics: A Minireview†

open access: yesChinese Journal of Chemistry, EarlyView.
Thermocatalytic hydrogenation of CO2 to aromatic hydrocarbons represents a sustainable route for high‐value CO2 utilization. Bifunctional catalysts combining metal/metal oxide components with acidic zeolites enable the direct synthesis of BTX aromatics.
Weilin Wang   +4 more
wiley   +1 more source

Indium triflate catalyzed rearrangement of aryl-substituted cyclopropyl carbinols to 1,4-disubstituted 1,3-butadienes

open access: yes, 2006
Aryl-substituted cyclopropyl carbinol derivatives undergo a facile stereoselective rearrangement catalyzed by In(OTf)3 in dichloromethane under sonication to produce the substituted conjugated all-trans ...
Banerjee, Subhash, Ranu, Brindaban C.
core   +1 more source

Resource‐Efficient Electrodes with Metallized Woven‐Glass‐Grid Current Collectors for Lithium‐Ion Batteries

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
The use of metallized glass‐based woven‐grids instead of metal foils as current collectors for LIBs leads to a significant reduction in metal usage by over 90 % and weight savings of more than 80 %, resulting in an 11 % increase in specific energy at the cell level. Abstract A novel class of resource‐efficient, woven‐glass‐grid current collectors (CCs)
Yen‐Ming Li   +10 more
wiley   +1 more source

Masstransfusion of dibutylsebacinate in butadien-acrylonitrylic and butadien-methylstyrolic vulcanizates

open access: yesТонкие химические технологии, 2009
The investigation of diffusion of dibutylsebacinate in butadien-acrylonitrylic and butadien-methylstyrolic vulcanizates was realized. It was shown that diffusion process in butadien-acrylonitrylic vulcanizates isn't stationary. Diffusion coefficients of dibutylsebacinate in butadien-acrylonitrylic and butadien-methylstyrolic vulcanizates was calculated.
S. V. Fomin, E. S. Shirokova
openaire   +1 more source

Circular and Bio‐Sourced Polymers for Energy Applications: Natural Feedstocks, Recycling, and Upcycling Routes

open access: yesEcoEnergy, EarlyView.
This review provides a critical comparative analysis of circular and bio‐sourced polymers for energy storage, systematically evaluating natural feedstocks alongside recycling and upcycling strategies for battery components. Key structure–property–performance relationships and inherent trade‐offs between sustainability metrics and electrochemical ...
Priyank Sinha   +3 more
wiley   +1 more source

Reaction of 1,2-Diaza-1,3-butadienes with Aminophosphorus Nucleophiles: A Practical Access to New Phosphorylated Pyrazolones

open access: yes, 2008
The reaction of 1,2-diaza-1,3-butadienes with dibenzyl diisopropylphosphoramidite, methyl tetraisopropylphosphorodiamidite or tris(dimethylamino)phosphane under solventfree conditions gave stable α-phosphoranylidene-hydrazones that, in turn, were ...
MANTELLINI F.   +6 more
core   +1 more source

Fish Scales: A Multifunctional Biomaterial from Nature

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Synthesis of 1-acetoxy-2-alkyl-2,3-butadienes and/or 2,3-dialkyl-1,3-butadienes from 1,4-diacetoxy-2-butyne and alkyl heterocuprates

open access: yes, 1982
AcOCH2C≡CCH2OAc (I) reacts with RCu.MgBrCl.LiBr [II, R = Pr, Me(CH2)4, (S)-EtMeCHCH2], prepd. by reaction of RMgCl with CuBr and LiBr, to form allenes CH2:C:CRCH2OAc (III) and butadienes H2C:CRCR:CH2, in yields depending on the I:II ratio.
ROSSI, RENZO   +2 more
core  

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