Month: December 2022

Benn, M. H. published the artcileThe sex pheromone of the silver Y moth Chrysodeixis eriosoma (Doubleday) in New Zealand, Synthetic Route of 16974-11-1, the publication is Zeitschrift fuer Naturforschung, C: Journal of Biosciences (1982), 37C(11-12), 1130-5, database is CAplus.

The major components of the sex pheromone of C. eriosoma were identified as 7Z– and 9Z-dodecenyl acetates, in ∼97:3 ratio. This blend was attractive to C. eriosoma males in the field and in a laboratory flight tunnel. 5Z-Dodecenyl acetate and 7Z-dodecenyl alc. inhibited this response in the field. C. eriosoma Was also attracted to the 5:1 blend of 7Z-dodecenyl acetate and 9Z-tetradecenyl acetate reported as the pheromone of C. chalcites in the western Palearctic. Specialist receptor cells for all 5 compounds were found in male antennal sensilla in both species.

Zeitschrift fuer Naturforschung, C: Journal of Biosciences published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Synthetic Route of 16974-11-1.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Pisella, Guillaume published the artcileThree-Component Reaction for the Synthesis of Highly Functionalized Propargyl Ethers, Safety of 3-Acetyldihydrofuran-2(3H)-one, the publication is Chemistry – A European Journal (2020), 26(45), 10199-10204, database is CAplus and MEDLINE.

Copper-catalyzed three-component reaction of diazo compounds, alcs. and ethynyl benziodoxole (EBX) reagents for the synthesis of propargyl ethers was reported. Extensive variations of the three partners of the reaction was possible, led to highly functionalized and structurally diverse products under mild conditions. Alkynylation of a copper ylide intermediate was postulated as key step for this transformation.

Chemistry – A European Journal published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C6H8O3, Safety of 3-Acetyldihydrofuran-2(3H)-one.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Pisella, Guillaume published the artcileCopper-Catalyzed Oxyvinylation of Diazo Compounds, Synthetic Route of 517-23-7, the publication is Organic Letters (2020), 22(10), 3884-3889, database is CAplus and MEDLINE.

A copper(I)-catalyzed vinylation of diazo compounds with vinylbenziodoxolone reagents (VBX) as partners was reported. The transformation tolerated diverse functionalities on both reagents delivering polyfunctionalized vinylated products. The strategy was successfully extended to a three-component/intermol. version with alcs. The obtained products contain synthetically versatile functional groups, such as an aryl iodide, an ester, and an allylic leaving group, enabling further modification.

Organic Letters published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C6H8O3, Synthetic Route of 517-23-7.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Alarcon, Rafael T. published the artcileA new acrylated monomer from macaw vegetable oil that polymerizes without external photoinitiators, Formula: C11H15NO2, the publication is Journal of Polymer Research (2021), 28(11), 425, database is CAplus.

The photopolymerization process has been widely studied due to its use in painting/coating, dentistry, creating photoresist materials and more recently in 3D printing. Therefore, new monomers have been synthesized to be used in this growing area. Here, a new Brazilian biomass derived, renewable monomer from macaw vegetable oil is presented. This monomer can self-polymerize without photoinitiation under UV light, reaching a monomer conversion of 75% and a conversion of 88% when Et 4-(dimethylamino)benzoate is present as a coinitiator. Furthermore, the final polymer has an orange color under visible light and exhibits fluorescence (a blue color) under UV radiation. Monomers and polymers formed from macaw (macauba) vegetable oil are thermally stable up to 220°C, as evidenced by thermogravimetry (TG). The polymers formed also exhibited a glass transition temperature of 2.6°C, as observed in differential scanning calorimetry (DSC) curves and dynamic-mech. anal. (DMA). This new monomer presents an alternative monomer to be used in 3D printing, in a similar manner to other vegetable oils such as soybean and linseed.

Journal of Polymer Research published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Formula: C11H15NO2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Renou, M. published the artcileElectrophysiological investigations of pheromone-sensitive sensilla in the hybrids between two moth species, Product Details of C14H26O2, the publication is Journal of Insect Physiology (1996), 42(3), 267-77, database is CAplus.

Thirteen pheromone compounds or pheromone analogs were screened on the antennal trichoid sensilla of males in French populations of Agrotis ipsilon, A. segetum and in hybrids between female A. ipsilon and male A. segetum produced in the laboratory Six functional types of trichoid sensilla were identified. Type 1 sensilla were characterized by the presence of a single receptor cell tuned to Z7-12:Ac. Type 2 sensilla housed 2 pheromone receptor cells. One cell was tuned to Z5-10:Ac; the other cell was less specifically tuned to Z8-12:Ac and showed various levels of responses to Z5-12:Ac, Z5-10:OH, Z11-16:Ac, and Z11-16:Ald. The receptor neurons in type 3 sensilla responded to Z5-12:Ac. Type 4 sensilla contained a neuron tuned to Z9-14:Ac and Z9-12:Ac. Only 1 sensillum in A. ipsilon was found to house a receptor cell responding to Z9-12:Ac (type 5). Finally, neurons in type 6 sensilla did not respond to any of the compounds The pheromone detection systems of parent species and hybrids were compared. The main difference between the 2 species was the distribution of type 1 and 2 sensilla. Type 1 sensilla were the most numerous (61.5%) and were found mainly on the branches of the antenna in A. ipsilon and the 1st generation hybrids. On the contrary, type 2 sensilla were more abundant (61.3%) in A. segetum where they stood principally on the antennal branches. Type 3 sensilla were present only in A. segetum and the hybrids, while type 4 sensilla were found only in A. ipsilon and the hybrids. Concerning cell specificity and sensillum distribution, the pheromone detection system of hybrids was very close to that of A. ipsilon. A. segetum is known for geog. variability in its communication system and a comparison is made with other populations.

Journal of Insect Physiology published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Product Details of C14H26O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Hori, Ryo published the artcileLight-Driven Phase Transition in a Cubic Phase-Forming Binary System Composed of 4′-n-Docosyloxy-3′-nitrobiphenyl-4-carboxylic Acid and an Azobenzene Derivative, Related Products of esters-buliding-blocks, the publication is Chemistry – A European Journal (2012), 18(24), 7346-7350, S7346/1-S7346/30, database is CAplus and MEDLINE.

By means of photoisomerization of a doped azobenzene derivative, the authors have for the first time demonstrated the light-driven bi-continuous cubic SmC (SmC-Cub_bi) phase transition, in which a 1D-organized SmC phase structure is switched reversibly to and from the 3D-organized structure of the Cub_bi phase. At the SmC-Cub_bi phase transition, several functions, such as optical property and viscosity, change dramatically, and thus it is anticipated that the UV-responsive Cub_bi systems could be multifunctional soft materials. Furthermore, it should be stressed that the methodol. of simply using binary mixtures containing an azobenzene derivative can avoid the synthetic difficulty that impedes the development of such UV-responsive Cub_bi systems.

Chemistry – A European Journal published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, Related Products of esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chiummiento, Lucia published the artcileNew indolic non-peptidic HIV protease inhibitors from (S)-glycidol: synthesis and preliminary biological activity, Safety of (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate, the publication is Tetrahedron (2009), 65(31), 5984-5989, database is CAplus.

A series of non-peptidic HIV protease inhibitors, e.g., I, were synthesized starting from the same optically active precursor, (S)-glycidol. The substrate was easily converted into different indolic sulfonamides or amines by regioselective reactions. The preliminary inhibitory activity was evaluated.

Tetrahedron published new progress about 115314-17-5. 115314-17-5 belongs to esters-buliding-blocks, auxiliary class Epoxides,Chiral,Nitro Compound,Sulfonate,Benzene, name is (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate, and the molecular formula is C9H9NO6S, Safety of (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chiummiento, Lucia published the artcileSynthesis and biological evaluation of novel small non-peptidic HIV-1 PIs: The benzothiophene ring as an effective moiety, HPLC of Formula: 115314-17-5, the publication is Bioorganic & Medicinal Chemistry Letters (2012), 22(8), 2948-2950, database is CAplus and MEDLINE.

Synthesis and biol. evaluation of a new series of potential HIV-1 protease inhibitors incorporating different heterocycles are described. The variation of heteroatom in such mols. has displayed totally different biol. activities and a benzothiophene containing inhibitor has shown high potency against wild type HIV-1 protease with IC₅₀ = 60 nM, thanks to the lower desolvation penalty to be payed by such hydrophobic moiety.

Bioorganic & Medicinal Chemistry Letters published new progress about 115314-17-5. 115314-17-5 belongs to esters-buliding-blocks, auxiliary class Epoxides,Chiral,Nitro Compound,Sulfonate,Benzene, name is (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate, and the molecular formula is C9H9NO6S, HPLC of Formula: 115314-17-5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chiloeches, A. published the artcileBiobased polymers derived from itaconic acid bearing clickable groups with potent antibacterial activity and negligible hemolytic activity, Quality Control of 617-52-7, the publication is Polymer Chemistry (2021), 12(21), 3190-3200, database is CAplus.

Herein, the authors report, for the first time, the synthesis of clickable polymers derived from biobased itaconic acid, which was used for the preparation of novel cationic polymers with antibacterial properties and low hemotoxicity via click chem. Itaconic acid (IA) was subjected to chem. modification by incorporating clickable alkyne groups on the carboxylic acids. The resulting monomer with pendant alkyne groups was easily polymerized and copolymerized with di-Me itaconate (DMI) by radical polymerization The feed molar ratio of comonomers was varied to precisely tune the content of alkyne groups in the copolymers and the amphiphilic balance. Subsequently, an azide with a thiazole group, which is a component of the vitamin thiamine (B1), was attached onto the polymers by copper-catalyzed azide-alkyne cycloaddition (CuAAC) click chem. leading to triazole linkages. N-Alkylation reactions of the thiazole and triazole groups with Me and Bu iodides provide the corresponding itaconate derivatives with pendant azolium groups. The copolymers with variable cationic charge densities and hydrophobic/hydrophilic balances, depending on the comonomer feed ratio, display potent antibacterial activity against gram-pos. bacteria, whereas the activity was almost null against gram-neg. bacteria. Hemotoxicity assays demonstrated that the copolymers exhibited negligible hemolysis and excellent selectivity, more than 1000-fold, for gram-pos. bacteria over human red blood cells.

Polymer Chemistry published new progress about 617-52-7. 617-52-7 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Aliphatic hydrocarbon chain,Ester, name is Dimethyl itaconate, and the molecular formula is C7H10O4, Quality Control of 617-52-7.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Takagi, Koji published the artcileSafe Removal of the Allyl Protecting Groups of Allyl Esters using a Recyclable, Low-Leaching and Ligand-Free Palladium Nanoparticle Catalyst, Name: 3-Methylbut-2-en-1-yl benzoate, the publication is Advanced Synthesis & Catalysis (2015), 357(9), 2119-2124, database is CAplus.

A safe, facile, ligand-free and low-leaching (up to 0.04ppm) method for the removal of allyl, prenyl and benzyl protecting groups from the corresponding esters using a non-flammable, sulfur-modified gold-supported palladium (SAPd) nanoparticle catalyst was developed. The catalyst itself was found to be recyclable and the reaction appeared to proceed on the surface of the SAPd.

Advanced Synthesis & Catalysis published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C26H41N5O7S, Name: 3-Methylbut-2-en-1-yl benzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics