Catalysis-chemistry

Reid, Michael S. published the artcileTunable Adhesion and Interfacial Structure of Layer-by-Layer Assembled Block co-polymer Micelle and Polyelectrolyte Coatings, Recommanded Product: 3-(Trimethoxysilyl)propan-1-amine, the publication is Advanced Materials Interfaces (2022), 9(17), 2200065, database is CAplus.

Understanding and tuning nanoscale structure is critical in developing new coatings and adhesives. In this work layer-by-layer assembly of block co-polymer (BCP) micelles and oppositely charged polyelectrolytes produces structurally unique coatings with wet adhesion comparable to that of mussel adhesive proteins. Cationic (CAT) and anionic (ANI) BCPs, synthesized by atom transfer radical polymerization (ATRP), are used to create colloidally stable, self-assembled, spherical BCP micelles. The assembly of BCP micelle and polyelectrolyte multilayers is monitored in situ where CAT- and ANI-BCP micelles exhibit linear and super-linear growth, resp. Imaging of the surfaces reveals that CAT-BCP micelles yield flat, uniform layers whereas ANI-BCP micelle assemblies form islands that increase in surface area with each addnl. layer. The adhesion of these layers, measured by colloidal probe at. force microscopy (CP-AFM), shows that the distinct layers of CAT-BCP micelle assemblies produce alternating high and low adhesion surfaces whereas ANI-BCP micelle assemblies continually increase in adhesion with each addnl. bilayer. The unique behavior of each assembly demonstrates that both composition and structure play important roles in wet adhesion of submicron layers and that each can be tuned to target performance for different applications.

Advanced Materials Interfaces published new progress about 13822-56-5. 13822-56-5 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is 3-(Trimethoxysilyl)propan-1-amine, and the molecular formula is C6H17NO3Si, Recommanded Product: 3-(Trimethoxysilyl)propan-1-amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Yao, Xiyuan published the artcileCysteine-Directed Bioconjugation of a Platinum(II)-Acridine Anticancer Agent, HPLC of Formula: 1395786-30-7, the publication is Inorganic Chemistry (2019), 58(1), 43-46, database is CAplus and MEDLINE.

Classical maleimide Michael addition chem. in conjunction with copper-free click chem. was investigated as a synthetic strategy to attach cytotoxic platinum-acridine hybrid agents to carrier proteins. The structural integrity and selectivity of the model payloads, which were validated in human serum albumin (HSA) using mass spectrometric anal. and heteronuclear 2D ¹H-¹⁵N HSQC NMR experiments, may have broad utility for the targeted delivery of highly cytotoxic platinum acridines and other nonclassical platinum containing anticancer agents.

Inorganic Chemistry published new progress about 1395786-30-7. 1395786-30-7 belongs to catalysis-chemistry, auxiliary class Inhibitor, name is Dbco-maleimide, and the molecular formula is C2H2N4O2, HPLC of Formula: 1395786-30-7.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Jouani, Mohamed Azzedine published the artcileSynthesis of F-alkylated 5,6-dihydro-2-uracils, SDS of cas: 30670-30-5, the publication is Bulletin de la Societe Chimique de France (1996), 133(9), 839-842, database is CAplus.

A two-step synthesis of 3-fluoroalkylated dihydrouracils consists of reacting a 3-aminopropanoic acid derivative with 2-(fluoroalkyl)ethyl isocyanates and treating the resulting product with catalytic amounts of hydrochloric acid. The treatment of 3-[2-(fluoroalkyl)ethylamino]propanoic acid derivatives with benzoyl isocyanate followed by acid-catalyzed cyclization gives 1-fluoroalkylated dihydrouracils.

Bulletin de la Societe Chimique de France published new progress about 30670-30-5. 30670-30-5 belongs to catalysis-chemistry, auxiliary class Polyfluoroalkanes, name is 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-Heptadecafluorodecan-1-amine, and the molecular formula is C10H6F17N, SDS of cas: 30670-30-5.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Dickey, J. B. published the artcileFluorinated aminoanthraquinone dyes, Safety of 1,1,1-Trifluoropropan-2-amine, the publication is Industrial and Engineering Chemistry (1956), 209-13, database is CAplus.

A new series of pink to violet fluorinated aminoanthraquinone dyes for cellulose acetate, having in some cases enhanced fastness to light and gas, was prepared by replacing one OH group of quinizarin with a fluoroalkylamino group. Fluoroalkylamine intermediates, which were prepared by the reaction of fluoroalkyl halides with NH₄OH, include 2,2,2-trifluoroethylamine, b. 35-6¡ã, 2,2-difluoroethylamine, b. 68-9¡ã, 2,2,2′,2′-tetrafluorodiethylamine, b. 122-3¡ã, 3,3-difluoropropylamine, b. 92-4¡ã, n_D²⁰ 1.3650, 3,3,3′,3′-tetrafluorodipropylamine, b₅₀ 91-4¡ã, n_D²⁰ 1.3744, 2,2-difluoropropylamine, b. 76-7¡ã, n_D²⁵ 1.3622, 2,2,2-trifluoro-1-methylethylamine, b. 46-7¡ã, n_D²⁰ 1.3210, 3,3,3-trifluoropropylamine, b. 67¡ã, n_D²⁰ 1.3316, and 4,4-difluoropentylamine, b. 125-30¡ã, n_D²⁵ 1.3864. The dyes which were prepared include 1-hydroxy-4-(2,2,2-trifluoroethylamino)anthraquinone, m. 158-60¡ã, 1-(2,2-difluoroethylamino)-4-hydroxyanthraquinone, m. 141-2¡ã, 1,4-bis(2,2-difluoroethylamino)anthraquinone, m. 242-3¡ã, 1-(2,2-difluoropropylamino)-4-hydroxyanthraquinone, m. 135-8, 1-hydroxy-4-(2,2,2-trifluoro-1-methylethylamino)anthraquinone, m. 143-5¡ã, 1-(3,3-difluoropropylamino)-4-hydroxyanthraquinone, and 1-(4,4-difluoropentylamino)-4-hydroxyanthraquinone, m. 128-30¡ã. Another series of dyes can be prepared by the reaction of 1-amino-4-bromo-2-trifluoromethylanthraquinone with a series of o-and p-(hydroxypolyethoxy)anilines. These dye cellulose acetate bright-blue shades and have excellent light-fastness and good resistance to gas fading. Intermediates prepared for this series include 1-chloro-2-methylanthraquinone, m. 158-9.5¡ã, 1-chloro-2-trichloromethylanthraquinone, m. 203-5¡ã, 1-chloro-2-trifluoromethylanthraquinone, m. 208¡ã, 1-amino-2-trifluoromethylanthraquinone, m. 144-6¡ã, and 1-amino-4-bromo-2-trifluoromethylanthraquinone, m. 175-7¡ã. The dye which was prepared was 1-amino-4-{p-{2-{2-[2-(2-hydroxyethoxy)ethoxy]ethoxy}ethoxy}anilino}-2-trifluoro-methylanthraquinone, m. 110-15¡ã.

Industrial and Engineering Chemistry published new progress about 421-49-8. 421-49-8 belongs to catalysis-chemistry, auxiliary class Trifluoromethyl,Fluoride,Amine,Aliphatic hydrocarbon chain, name is 1,1,1-Trifluoropropan-2-amine, and the molecular formula is C3H6F3N, Safety of 1,1,1-Trifluoropropan-2-amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Spialter, Leonard published the artcileNovel synthesis of organotri- and difluorosilanes with aqueous hydrofluoric acid, COA of Formula: C12H10F2Si, the publication is Tetrahedron Letters (1960), 11-14, database is CAplus.

In the presence of excess concentrated aqueous HF no hydrolysis products of halosilanes were isolated. Freshly distilled EtSiCl₃ (25.0 g., b₇₄₅ 96.5¡ã) and 95 g. 48% HF shaken 1 hr. at 0¡ã in a polyethylene bottle and the evolved gases trapped at -78.5¡ã (solid CO₂) yielded 88-90% EtSiF₃, b. -5¡ã, d_-76.5 1.227. Similarly, 26.4 g. PhSiCl₃ (b₇₃₇ 197-9¡ã) and 78.0 g. 48% HF shaken vigorously 2 hrs. at 0¡ã and the washed (H₂O) and dried (anhydrous Na₂SO₄) solution treated with NaF (to adsorb excess HF) yielded 85% PhSiF₃, b₇₃₇ 98-104¡ã, n²²_D 1.4103. PhSiCl₃ (52.8 g.) with 156 g. 48% HF in 200 ml. C₅H₁₂ shaken at 0¡ã with 50.0 g. 48% HF gave 43.5 g. Ph₂SiF₂, b₇₃₇ 260-5¡ã, n²⁵_D 1.5536. Under similar conditions (Ph₃Si)₂O was not cleaved to Ph₃SiF, suggesting that siloxane formation may not take place prior to establishment of the Si-F bond and that either direct halogen substitution or interaction with the initial hydrolytic products of the chlorosilane may be steps in the mechanism.

Tetrahedron Letters published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C6H8O6, COA of Formula: C12H10F2Si.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Narayanam, Maruthi Kumar published the artcileRapid One-Step ¹⁸F-Labeling of Peptides via Heteroaromatic Silicon-Fluoride Acceptors, Safety of Tetraethylammonium hydrogencarbonate, the publication is Organic Letters (2020), 22(3), 804-808, database is CAplus and MEDLINE.

A new class of organosilicon-based radiosynthons, heteroaromatic silicon-fluoride acceptors, namely, HetSiFAs, that readily undergo isotope exchange with dry [¹⁸F]fluoride at room temperature in high radiochem. yield (up to 94%) with good molar activity is reported. Radiofluorination proceeds in a single step in 2 min without high-performance liquid chromatog. purification to provide an operationally simple method for ¹⁸F-PET tracer production This method was used to prepare an ¹⁸F-labeled com. tetrapeptide, and positron emission tomog. imaging confirmed in vivo stability.

Organic Letters published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, Safety of Tetraethylammonium hydrogencarbonate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Mannekens, Els published the artcileEfficient synthesis of 1-benzyloxyphenyl-3-phenylacetones, Category: catalysis-chemistry, the publication is Synthesis (2000), 1214-1216, database is CAplus.

1-[(Benzyloxy)phenyl]-3-phenylacetones (I) were conveniently synthesized by acylation of the PhCH₂Li-DABCO complex with their resp. N-Me O-Me hydroxamates. In four steps, the ketones I having ortho-, meta- and para-benzyloxy substituents were obtained in 42-51% overall yields from com. available 2-(hydroxyphenyl)acetic acids.

Synthesis published new progress about 1860-58-8. 1860-58-8 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2-(3-(Benzyloxy)phenyl)acetic acid, and the molecular formula is C15H14O3, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Rousseau, Lidie published the artcileRelevance of Single-Transmetalated Resting States in Iron-Mediated Cross-Couplings: Unexpected Role of ¦Ò-Donating Additives, Name: 4,4′-Dimethyldiphenyl, the publication is Inorganic Chemistry (2021), 60(11), 7991-7997, database is CAplus and MEDLINE.

Control of the transmetalation degree of organoiron(II) species is a critical parameter in numerous Fe-catalyzed cross-couplings to ensure the success of the process. In this report, we however demonstrate that the selective formation of a monotransmetalated Fe^II species during the catalytic regime counterintuitively does not alone ensure an efficient suppression of the nucleophile homocoupling side reaction. It is conversely shown that a fine control of the transmetalation degree of the transient Fe^III intermediates obtained after the activation of alkyl electrophiles by a single-electron transfer (SET), achievable using ¦Ò-donating additives, accounts for the selectivity of the cross-coupling pathway. This report shows for the first time that both coordination spheres of Fe^II resting states and Fe^III short-lived intermediates must be efficiently tuned during the catalytic regime to ensure high coupling selectivities.

Inorganic Chemistry published new progress about 613-33-2. 613-33-2 belongs to catalysis-chemistry, auxiliary class Benzene, name is 4,4′-Dimethyldiphenyl, and the molecular formula is C14H14, Name: 4,4′-Dimethyldiphenyl.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Briggs, Edward L. published the artcileSynthesis of Sulfonimidamides from Sulfenamides via an Alkoxy-amino-¦Ë⁶-sulfanenitrile Intermediate, COA of Formula: C10H15NS, the publication is Angewandte Chemie, International Edition (2019), 58(40), 14303-14310, database is CAplus and MEDLINE.

Sulfonimidamides are intriguing new motifs for medicinal and agrochem., and provide attractive bioisosteres for sulfonamides. However, there remain few operationally simple methods for their preparation Here, the synthesis of NH-sulfonimidamides is achieved directly from sulfenamides, themselves readily formed in one step from amines and disulfides. A highly chemoselective and one-pot NH and O transfer is developed, mediated by PhIO in iPrOH, using ammonium carbamate as the NH source, and in the presence of 1 equiv of acetic acid. A wide range of functional groups are tolerated under the developed reaction conditions, which also enables the functionalization of the antidepressants desipramine and fluoxetine and the preparation of an aza analog of the drug probenecid. The reaction is shown to proceed via different and concurrent mechanistic pathways, including the formation of novel S N sulfanenitrile species as intermediates. Several alkoxy-amino-¦Ë⁶-sulfanenitriles are prepared with different alcs., and shown to be alkylating agents to a range of nucleophiles.

Angewandte Chemie, International Edition published new progress about 19117-31-8. 19117-31-8 belongs to catalysis-chemistry, auxiliary class Oxidant, name is N-(tert-Butyl)-S-phenylthiohydroxylamine, and the molecular formula is C10H15NS, COA of Formula: C10H15NS.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Duro, Jose Antonio published the artcileSynthesis and aggregation properties in solution of a new octasubstituted copper phthalocyanine: {2,3,9,10,16,17,23,24-octakis[(dioctylaminocarbonyl)methoxy]phthalocyaninato}copper(II), Application In Synthesis of 5411-14-3, the publication is Chemische Berichte (1993), 126(1), 269-71, database is CAplus.

The preparation of CuL (H₂L = 2,3,9,10,16,17,23,24-octakis[(dioctylaminocarbonyl)methoxy]phthalocyanine), highly soluble in organic solvents, is described. Its aggregation properties in different solvents and in the presence of alk., alk. earth, and NH₄⁺ salts were studied.

Chemische Berichte published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C10H10O6, Application In Synthesis of 5411-14-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia