Results 51 to 60 of about 37,076 (287)

The Honey Volatile Code: A Collective Study and Extended Version

Foods, 2019
Background: The present study comprises the second part of a new theory related to honey authentication based on the implementation of the honey code and the use of chemometrics.
Ioannis K. Karabagias, Vassilios K. Karabagias, Anastasia V. Badeka   +2 more
doaj   +1 more source

Efficient cationic ring-opening polymerization of diverse cyclic imino ethers: unexpected copolymerization behavior [PDF]

, 2011
The recently developed fast microwave-assisted cationic ring-opening polymerization procedure for 2-oxazolines seems to be ideally suited for slower polymerizing cyclic imino ether monomers.
Bloksma, Meta M, Fijten, Martin WM, Hoogenboom, Richard, Lambermont-Thijs, Hanneke ML, Schubert, Ulrich S, van der Linden, AJ (Ton), van Lankvelt, Bart M   +6 more
core   +2 more sources

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source

Reactions of cyclobutenones with nucleophilic reagents via vinylketen intermediates [PDF]

, 1976
While strong nucleophiles add to the endocyclic double bond of cyclobutenones to yield cyclobutanones, weaker nucleophiles (e.g. alcohols, aniline) interact with the vinylketens which are thermally or photochemically generated from cyclobutenones; the ...
Huisgen, Rolf, Mayr, Herbert
core   +1 more source

Eutectozymes as Soft Hybrid Materials for Advanced Biocatalysis

Advanced Materials, EarlyView.
Eutectozymes are sustainable hybrid materials that embed a GOx–HRP cascade within hydrophobic eutectogels featuring a dual supramolecular–covalent network. This architecture preserves native enzyme structure and stability, enables efficient heterogeneous biocatalysis in aqueous media, and positions eutectogels as robust platforms for next‐generation ...
Manuel Eduardo Martinez Cartagena, Lucia Suarez, Aitor Ontoria, Francisca J. Benitez, Elixabete Rezabal, María Soledad Orellano, Marcelo Calderón, Cristián Huck‐Iriart, Agustin S. Picco, Matias L. Picchio, Ana Beloqui   +10 more
wiley   +1 more source

Regioselectivity of the Claisen Rearrangement of Meta- and Para-Substituted Allyl Aryl Ethers

Reactions
The regioselectivity of the Claisen rearrangement with different meta-substituted and meta- and para-substituted allyl phenyl ethers was investigated.
William Thomas Möller, Svava Dögg Hreinsdóttir, Luis Antonio Arana, Benjamín Ragnar Sveinbjörnsson   +3 more
doaj   +1 more source

Asymmetric Electrophilic alpha-Amidoalkylation, VII1): Generation, Crystal Structure, and Trapping Reactions of a Chiral 6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline Derived N-Acyliminium Ion [PDF]

, 1990
The camphanic acid amide 4 has efficiently been oxidized with triphenylcarbenium tetrafluoroborate (3) to yield the chiral N-acyliminium ion 1. Trapping reactions of 1 with the silyl nucleophiles 7a-c and 10a-f proceeded with stereoselective bond ...
Aledesanmi, Brossi, Brossi, Huber, Kametani, Nagasaka, Onda, Palasz, Shono, Stupnikova, Wanner, Wanner, Wanner, Wanner, Yamato, Zaugg   +15 more
core   +1 more source

Reaction Products of Cyanoalkyl Phenyl Ethers and Carboxyalkyl Phenyl Ethers with Formaldehyde

The Journal of the Society of Chemical Industry, Japan, 1970
過塩素酸を触媒とし, 酢酸溶媒を用い置換アルキルフェニルエーテル (C6H5O(CH2)nX, X=CN, COOH : n=1,3,4) とホルムアルデヒドとの反応をおこない, 生成する可溶性樹脂の分子量におよぼすXとnの影響について調べた。その結果を下記に記す。ニトリル基を有する化合物の樹脂構造は主としてメチレン結合とメチレンビスアミド結合, カルボキシル基を有する樹脂は主としてメチレン結合によって連結されているものと推定された。
Akira NINAGAWA, Yutaka KAWAMATA, Haruo MATSUDA, Sumio MATSUDA   +3 more
openaire   +2 more sources

Functional Metal Complexes for Solar–Light‐Driven Energy Conversion

Advanced Materials, EarlyView.
This review provides an exhaustive summary of the recent advancements of functional metal complexes in solar‐to‐electrical, ‐chemical, and ‐thermal energy conversion, comprising material categories, design strategies, underlying principles of operation, and identified improvement of performances.
Yanyan Qin, Dou Luo, Miao Zhang, Wai‐Yeung Wong   +3 more
wiley   +1 more source

Protonation and ring closure of stereoisomeric alpha-substituted cinnamic acids in superacidic media studied by 13C NMR spectroscopy and computations [PDF]

, 1998
Five alpha-substituted cinnamic acids [(E)- and (Z)-2,3-diphenyl-, (E)- and (Z)-3-(2-methoxyphenyl)-2-phenyl- and (E)-2-(2-methoxyphenyl)-3-phenyl-propenoic acids] have been protonated in fluorosulfonic acid at -78 degrees C, Protonation of the ...
Burrichter, Arwed, Olah, George A., Prakash, Surya G.K, Pálinkó, István, Rasul, Golam, Török, Béla   +5 more
core   +1 more source