Category: ethers-buliding-blocks

Barrett, Anthony G. M. published the artcileB-[3-((Diisopropylamino)dimethylsilyl)allyl]diisopinocampheylborane: an excellent reagent for the stereoselective synthesis of anti vicinal diols, Recommanded Product: (+)-B-Methoxydiisopinocampheylborane, the publication is Journal of Organic Chemistry (1991), 56(18), 5243-5, database is CAplus.

Title reagent I, derived from (+)-α-pinene, reacted with aldehydes to provide, on work up with hydrogen peroxide, (3S,4R)-dihydroxy-1-alkenes. These were formed with both high relative and absolute stereochem. control. The antipodal reagent, derived from (-)-α-pinene, gave the corresponding (3R,4S)-diols.

Journal of Organic Chemistry published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C21H37BO, Recommanded Product: (+)-B-Methoxydiisopinocampheylborane.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Meena, Mahesh published the artcileI₂/FeCl₃ Promoted Cascade Reaction of 4-Quinazolinone, Pyridine, and Chalcone for the Synthesis of Indolizines, Safety of (2-Methoxyphenyl)methanamine, the publication is ChemistrySelect (2022), 7(21), e202201378, database is CAplus.

The indolizines nucleus is an important element of many synthetic mols. with significant biol. activity. An efficient methodol. for the synthesis of a variety of indolizines from quinazolinone, pyridine, and chalcone via I₂/FeCl₃ has been described. The reaction was promoted through zwitterion formation/cyclization/aromatization sequence, affording the desired products in moderate to very good yields. This approach is a highly efficient and convenient way to get derivatives of indolizines from readily accessible substrate under relatively mild reaction conditions.

ChemistrySelect published new progress about 6850-57-3. 6850-57-3 belongs to ethers-buliding-blocks, auxiliary class Amine,Benzene,Ether, name is (2-Methoxyphenyl)methanamine, and the molecular formula is C8H11NO, Safety of (2-Methoxyphenyl)methanamine.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Grishin, Igor Yu. published the artcileA sequence of acylamination and acylation reactions in polyphosphoric acid – a novel approach to the Friedlander synthesis of 2-arylquinolines, Formula: C8H10O2, the publication is Chemistry of Heterocyclic Compounds (New York, NY, United States) (2022), 58(6-7), 313-318, database is CAplus.

A method for the synthesis of 2-(2-acylaminoaryl)quinolines I (R¹ = OMe, -OCH₂CH₂O-, Me; R² = Me, Et) was developed based on a one-pot sequence of direct electrophilic acylamination of arenes with nitroalkanes R²NO₂ in polyphosphoric acid and acylation at the ortho position with respect to the acylamino group.

Chemistry of Heterocyclic Compounds (New York, NY, United States) published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Formula: C8H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Yadav, J. S. published the artcileStereoselective total synthesis of (+)-sapinofuranone B, Related Products of ethers-buliding-blocks, the publication is Tetrahedron (2011), 67(25), 4620-4627, database is CAplus.

Two approaches for the total synthesis of (+)-sapinofuranone B have been described. The first strategy utilizes the methodol. developed earlier in our group to get the chiral propargyl alc. and the second strategy involves generation of threo-1,2-diol derivative by diastereoselective and enantioselective addition of [(Z)-γ-methoxymethoxyallyl]diisopinocampheylborane onto aldehyde and cross metathesis as the key steps.

Tetrahedron published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C6H4ClNO2, Related Products of ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Kumar, Ashwini Prem published the artcileRational design, molecular docking, dynamic simulation, synthesis, PPAR-γ competitive binding and transcription analysis of novel glitazones, COA of Formula: C9H10O4, the publication is Journal of Molecular Structure (2022), 133354, database is CAplus.

Over the last decade, peroxisome proliferator-activated receptor (PPAR-γ) has emerged as one of the important therapeutic targets in several metabolic and neurodegenerative disorders. The remarkable progress in drug discovery has resulted in designing novel PPAR-γ activators. Thiazolidinediones, also known as glitazones, have been demonstrated to play a significant role in treating several neurodegenerative diseases, diabetes, and cancer. Despite its wide range of adverse effects, glitazones orchestrate significant pharmacol. activities. In this backdrop, we designed and synthesized novel glitazones for potential PPAR-γ binding activity. The synthesized novel compounds were structurally analyzed using 1H NMR, 13C NMR and FT-IR. The interaction binding modes, binding free energy, and crucial amino acids involved in interactions of designed compounds with the target protein were studied using mol. docking. Further, mol. dynamic modeling was used to evaluate the stability of the best-docked complexes. TR-FRET, an in vitro PPAR-γ competitive binding assay, was performed to confirm the affinity of the well-docked compounds for the target protein. It demonstrated that the compounds explicitly bind to the PPAR-γ ligand-binding domain to exhibit pharmacol. activity. The cytotoxicity of synthesized compounds was performed and confirmed the PPAR-γ transcription activity on SH-SY5Y cell lines

Journal of Molecular Structure published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C9H10O4, COA of Formula: C9H10O4.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Liu, Jin published the artcileA Comparison of Acetyl- and Methoxycarbonylnitrenes by Computational Methods and a Laser Flash Photolysis Study of Benzoylnitrene, SDS of cas: 16332-06-2, the publication is Journal of Organic Chemistry (2004), 69(25), 8583-8593, database is CAplus and MEDLINE.

D. functional theory (DFT), CCSD(T), and CBS-QB3 calculations were performed to understand the chem. and reactivity differences between acetylnitrene (CH₃C(:O)N) and methoxycarbonylnitrene (CH₃OC(:O)N) and related compounds CBS-QB3 theory alone correctly predicts that acetylnitrene has a singlet ground state. We agree with previous studies that there is a substantial N-O interaction in singlet acetylnitrene and find a corresponding but weaker interaction in methoxycarbonylnitrene. Methoxycarbonylnitrene has a triplet ground state because the oxygen atom stabilizes the triplet state of the carbonyl nitrene more than the corresponding singlet state. The oxygen atom also stabilizes the transition state of the Curtius rearrangement and accelerates the isomerization of methoxycarbonylnitrene relative to acetylnitrene. Acetyl azide is calculated to decompose by concerted migration of the Me group along with nitrogen extrusion; the free energy of activation for this concerted process is only 27 kcal/mol, and a free nitrene is not produced upon pyrolysis of acetyl azide. Methoxycarbonyl azide, on the other hand, does have a preference for stepwise Curtius rearrangement via the free nitrene. The bimol. reactions of acetylnitrene and methoxycarbonylnitrene with propane, ethylene, and methanol were calculated and found to have enthalpic barriers that are near zero and free energy barriers that are controlled by entropy. These predictions were tested by laser flash photolysis studies of benzoyl azide. The absolute bimol. reaction rate constants of benzoylnitrene were measured with the following substrates: acetonitrile (k = 3.4 × 10⁵ M^-1 s^-1), methanol (6.5 × 10⁶ M^-1 s^-1), water (4.0 × 10⁶ M^-1 s^-1), cyclohexane (1.8 × 10⁵ M^-1 s^-1), and several representative alkenes. The activation energy for the reaction of benzoylnitrene with 1-hexene is -0.06 ± 0.001 kcal/mol. The activation energy for the decay of benzoylnitrene in pentane is -3.20 ± 0.02 kcal/mol. The latter results indicate that the rates of reactions of benzoylnitrene are controlled by entropic factors in a manner reminiscent of singlet carbene processes.

Journal of Organic Chemistry published new progress about 16332-06-2. 16332-06-2 belongs to ethers-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Ether, name is 2-Methoxyacetamide, and the molecular formula is C3H7NO2, SDS of cas: 16332-06-2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Dalla Cort, Antonella published the artcileInherently Chiral Uranyl-Salophen Macrocycles: Computer-Aided Design and Resolution, COA of Formula: C10H14O, the publication is Journal of Organic Chemistry (2005), 70(24), 9814-9821, database is CAplus and MEDLINE.

A flipping motion rapidly inverts the bent structure of uranyl-salophen compounds and, consequently, causes fast enantiomerization of nonsym. substituted derivatives This process was previously slowed by introducing bulky substituents in the imine bond region. Since the resulting complexes dissociate upon chromatog. treatment, an alternative approach to the design and synthesis of robust, nonflipping uranyl-salophen compounds is here described. Such an approach is based on the idea that the flipping motion would be blocked by connecting the para positions with respect to the phenoxide oxygens by polymethylene bridges of suitable length. Anal. of a number of uranyl-salophen compounds by mol. mechanics, while showing that bulky substituents in the imine bond region cause severe distortions of the ligand backbone, suggested that the best chain lengths are those that fit the gap between the phenoxide rings without altering the natural geometry of the parent uranyl-salophen compound Calculations showed that such chains are those composed of 12 and 13 methylene units. Accordingly, chiral uranyl-salophen macrocycles bridged with 12- and 13-methylene chains, [UO₂(L)] (H₂L = I, n = 1, 2; R = i-Pr, R’ = Ph), were synthesized in fairly good yields and resolved by chiral HPLC.

Journal of Organic Chemistry published new progress about 2944-47-0. 2944-47-0 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 2-Isopropylanisole, and the molecular formula is C10H14O, COA of Formula: C10H14O.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Bhattacharya, Aditya published the artcile“Haliranium Ion”-Induced Intermolecular Friedel-Crafts Alkylation in HFIP: Synthesis of β,β-Diaryl α-Halo carbonyl Compounds, HPLC of Formula: 93-04-9, the publication is European Journal of Organic Chemistry (2021), 2021(33), 4737-4749, database is CAplus.

Herein, a highly regio- and diastereoselective haliranium ion-induced intermol. Friedel-Crafts reaction of α,β-unsaturated carbonyl compounds in HFIP is reported. The operationally simple and mild method affords the synthetically useful β,β-diarylated α-halo carbonyl compounds in good yields after a very short reaction time. As an application, a few examples of β,β-diarylated olefins are prepared in excellent yields. Based on the exptl. results and a qual. study of 1D-NMR-experiments, a plausible reaction mechanism is proposed.

European Journal of Organic Chemistry published new progress about 93-04-9. 93-04-9 belongs to ethers-buliding-blocks, auxiliary class Naphthalene,Ether, name is 2-Methoxynaphthalene, and the molecular formula is C11H10O, HPLC of Formula: 93-04-9.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Weinberger, R. published the artcileHigh-pressure liquid chromatographic analysis of pramoxine hydrochloride in high lipoid aerosol foam dosage form, Related Products of ethers-buliding-blocks, the publication is Journal of Pharmaceutical Sciences (1980), 69(4), 475-7, database is CAplus and MEDLINE.

A rapid and quant. method for the determination of pramoxine-HCl (I) [637-58-1] by high-pressure liquid chromatog. is presented. The drug is extracted as the salt from a preparation with a high lipoid composition by partitioning it to the aqueous phase of an Et₂O-MeOH-H₂O-AcOH system. The extract is chromatographed on an octadecylsilane bonded packing with MeOH-H₂O-AcOH-MeSO₃H mobile phase. The time required for each separation is âˆ? min. Anal. recoveries of 100.4 ± 1.5% were obtained.

Journal of Pharmaceutical Sciences published new progress about 637-58-1. 637-58-1 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, and the molecular formula is C9H9NO, Related Products of ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Gattow, G. published the artcileOxidation products of thiourea, Recommanded Product: Formamidine disulfide dihydrochloride, the publication is Zeitschrift fuer Anorganische und Allgemeine Chemie (1988), 66-72, database is CAplus.

(H₂N)₂CSSC(NH₂)₂Cl₂ (I) was obtained by H₂O₂ oxidation of thiourea in presence of HCl. Treatment of I with NaH gave H₂N(HN:)CSSC(:NH)NH₂ (II). Neither I nor II, nor (H₂N)₂CSO₂ reacted with CS₂ or chlorodithioformates.

Zeitschrift fuer Anorganische und Allgemeine Chemie published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C2H8Cl2N4S2, Recommanded Product: Formamidine disulfide dihydrochloride.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem