Tag: M.W=150-200

Saprykin, L. V. published the artcileEvolution of volatile substances during thermal degradation of rice hull organic components. 1. Thermolysis with inorganic catalytic additives, Formula: C10H14O, the publication is Koksnes Kimija (1990), 8-14, database is CAplus.

A comparison of the catalytic effect of NaCl, KCl, CaCl₂, MgCl₂, CsBr, and LiCl on thermolysis of rice hulls for Si showed that LiCl exerted the strongest effect. LiCl significantly changed the composition of the thermolysis products by promoting cleavage of C-C and ether bonds. NH₄Cl catalyzed low-temperature dehydration and secondary resinification reactions of the thermolysis products. Significant amounts of SiO₂ contained in the rice hull and in its hydrolytic lignin leveled the catalytic effect of LiCl. The thermolysis products included 2-methyldioxolane, mesityl oxide, 2-isopropylanisole, PhOH, guaiacol, 2-ethylphenol, veratrole, furfural, formal, coumaran, ethylpyrocatechol, and Me₂CO.

Koksnes Kimija 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, Formula: C10H14O.

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

Seong, Chaehyeon published the artcileTotal Synthesis of 1-Oxomiltirone and Arucadiol, COA of Formula: C10H14O, the publication is Synlett (2020), 31(19), 1953-1956, database is CAplus.

A practical and efficient approach for the total synthesis of arucadiol (I) and 1-oxomiltirone (II) is reported. The key step, which involves an intramol. [4+2] cycloaddition catalyzed by gold(III) bromide or copper(II) triflate, leads to the formation of 6-6-6-fused aromatic abietane core.

Synlett 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 C6H10F3NO, COA of Formula: C10H14O.

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

Kasama, Kengo published the artcileChemo- and regioselective cross-dehydrogenative coupling reaction of 3-hydroxycarbazoles with arenols catalyzed by a mesoporous silica-supported oxovanadium, Category: ethers-buliding-blocks, the publication is RSC Advances (2021), 11(56), 35342-35350, database is CAplus and MEDLINE.

Cross-dehydrogenative coupling between 3-hydroxycarbazoles I(R = H; R¹ = H, Br, Me; RR¹ = -CH:CH-CH:CH-; R² = H, Me, Ph, benzyl, acetyl, tolyl) and 2-naphthols II (R³ = 6-MeO, 7-Br, 3-Me, etc.) has been achieved by using a mesoporous silica-supported oxovanadium catalyst.

RSC Advances 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, Category: ethers-buliding-blocks.

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

Chen, C. Y. published the artcileA New Benzenoid from Liriodendron chinense, Formula: C9H10O4, the publication is Chemistry of Natural Compounds (2022), 58(3), 387-389, database is CAplus.

A new benzenoid, liriodenchic acid (1), along with nine known compounds that include two aporphine alkaloids, liriodenine (2) and (-)-anonaine (3); two lignans, (+)-syringaresinol (4) and (+)-yangambin (5); and five benzenoids, p-hydroxybenzoic acid (6), vanillic acid (7), vanillin (8), syringic acid (9), and syringaldehyde (10), were isolated from the leaves of Liriodendron chinense (Magnoliaceae). These compounds were characterized and identified by phys. and spectral evidences.

Chemistry of Natural Compounds 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, Formula: C9H10O4.

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

Karimi Askarani, Hajar published the artcileOne-pot synthesis of polyhydroquinoline derivatives using nano-Fe₃O₄@dextrin/BF₃ as a magnetic biodegradable catalyst, Formula: C9H10O4, the publication is Journal of the Iranian Chemical Society (2022), 19(7), 3189-3203, database is CAplus.

In this study, the magnetized nano-dextrin-supported boron trifluoride (nano-Fe₃O₄@dextrin/BF₃) as a green biopolymer-based catalyst is synthesized in two steps. In the first step, nano-dextrin is magnetized (nano-Fe₃O₄@dextrin), and in the second step, the BF₃ is supported to the obtained nano-Fe₃O₄@dextrin. The structure of nano-Fe₃O₄@dextrin/BF₃ is characterized by different techniques, including Fourier transform IR (FT-IR) spectroscopy, X-ray diffraction (XRD) pattern, energy dispersive X-ray (EDX) anal., SEM (SEM) imaging, mapping, vibrating sample magnetometer (VSM), and thermogravimetric anal. (TGA/DTG). The catalytic efficiency was also investigated in the synthesis of biol. active polyhydroquinoline derivatives via Hantzsch condensation reaction of aromatic aldehydes, dimedone, Et acetoacetate, and ammonium acetate under solvent-free conditions. The structure of products was confirmed by their m.ps. (MP), FT-IR, and ¹H and ¹³C NMR (NMR) spectroscopy. This procedure enjoys advantages such as short reaction time, clean and fast work-up, and easy separation of the catalyst by an external magnet.

Journal of the Iranian Chemical Society 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, Formula: C9H10O4.

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

Jacobs, Emily published the artcileExperimental and Computational Studies towards Chemoselective C-F over C-Cl Functionalisation: Reversible Oxidative Addition is the Key, COA of Formula: C11H10O, the publication is ChemCatChem (2021), 13(2), 637-645, database is CAplus.

Catalytic cross-coupling is a valuable tool for forming new carbon-carbon and carbon-heteroatom bonds, allowing access to a variety of structurally diverse compounds However, for this methodol. to reach its full potential, precise control over all competing cross-coupling sites in poly-functionalized building blocks is required. Carbon-fluorine bonds are one of the most stable bonds in organic chem., with oxidative addition at C-F being much more difficult than at other C-halide bonds. As such, the development of methods to chemoselectively functionalize the C-F position in poly-halogenated arenes would be very challenging if selectivity was to be induced at the oxidative addition step. However, metal-halide complexes exhibit different trends in reactivity to the parent haloarenes, with metal-fluoride complexes known to be very reactive towards transmetalation. In this current work, we sought to exploit the divergent reactivity of Ni-Cl and Ni-F intermediates to develop a chemoselective C-F functionalization protocol, where selectivity is controlled by the transmetalation step. Our exptl. studies highlight that such an approach is feasible, with a number of nickel catalysts shown to facilitate Hiyama cross-coupling of 1-fluoronaphthalene under base-free conditions, while no cross-coupling with 1-chloronaphthalene occurred. Computational and exptl. studies revealed the importance of reversible C-Cl oxidative addition for the development of selective C-F functionalization, with ligand effects on the potential for reversibility also presented.

ChemCatChem 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, COA of Formula: C11H10O.

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

Huang, Long published the artcileBioinspired desaturation of alcohols enabled by photoredox proton-coupled electron transfer and cobalt dual catalysis, Name: 2-Methoxynaphthalene, the publication is Nature Communications (2022), 13(1), 809, database is CAplus and MEDLINE.

In the biosynthesis of sterols an enzyme-catalyzed demethylation is achieved via a stepwise oxidative transformation of alcs. e.g., 1-(4-methoxyphenyl)cyclodecan-1-ol to olefins e.g., 4-(OCH₃)C₆H₄C(O)(CH₂)₇CH=CH₂. The overall demethylation proceeds through two sequential monooxygenation reactions and a subsequent dehydroformylative saturation To mimic the desaturation processes observed in nature, photoredox proton-coupled electron transfer (PCET) and cobaloxime chem. were successfully integrated for the acceptorless dehydrogenation of alcs. The state-of-the-art remote and precise desaturation of ketones RC(O)(CH₂)₃CH=CH₂ [R = 4-(tert-butoxy)phenyl, phenanthren-9-yl, 1-benzothiophen-2-yl, etc.] proceeds efficiently through the activation of cyclic alcs. I using bond-dissociation free energy (BDFE) as thermodn. driving force. The resulting transient alkoxyl radical allows C-C bond scission to generate the carbon-centered radical remote to the carbonyl moiety. The key intermediate is subsequently combined with cobaloxime photochem. to furnish the alkene. Moreover, the mild protocol can be extended to desaturation of linear alcs. as well as aromatic hydrocarbons. Application to bioactive mols. and natural product derivatives is also presented.

Nature Communications 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, Name: 2-Methoxynaphthalene.

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

Wang, Ruikun published the artcileForming mechanism of coke microparticles from polymerization of aqueous organics during hydrothermal carbonization process of biomass, Formula: C9H10O4, the publication is Carbon (2022), 50-60, database is CAplus.

Corn stalk was selected as a typical biomass, and the growth mechanism of coke microparticles was studied. The coke microparticles that formed from through the polymerization of aqueous organics during the hydrothermal carbonization (HTC) showed a considerable effect on the mass yield and physicochem. properties of the hydrochar. Results indicated that the average particle size of the coke microparticles rapidly increased to 6.25μm within the initial 2 h of HTC. The lower C/O at. ratio of the surface layer of the coke microparticles than that of the core, suggested that the core had a higher carbonization degree than the shell. On the basis of various measurements, the coke microparticles were inferred to have formed through the two stages of micronuclei formation and growth. Dissolved organics, including furfurals, furans, and phenols polymerized each other into aromatized macromols., and then formed solid-phase micronuclei. Subsequently, the oxygen containing groups of the micronuclei formed bonded with aqueous organic mols., as a result, the micronuclei grew up into coke microparticles. Meanwhile, the carbonization degree of the coke microparticles was enhanced due to continuous intra- and inter-mol. dehydration and decarboxylation reactions occurred between hydroxyl and carboxyl groups.

Carbon 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 C14H31NO2, Formula: C9H10O4.

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

Wu, Zhuo published the artcilePd-catalyzed cross-electrophile Coupling/C-H alkylation reaction enabled by a mediator generated via C(sp³)-H activation, SDS of cas: 93-04-9, the publication is Chemical Science (2021), 12(24), 8531-8536, database is CAplus and MEDLINE.

Pd-catalyzed cascade cross-electrophile coupling and C-H alkylation reaction of 2-iodo-alkoxylarenes with alkyl chlorides were reported. Methoxy and benzyloxy groups, which were ubiquitous functional groups and common protecting groups, were utilized as crucial mediators via primary or secondary C(sp³)-H activation. The reaction provided an innovative and convenient access for the synthesis of alkylated phenol derivatives, which were widely found in bioactive compounds and organic functional materials.

Chemical Science 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 C8H15ClN2, SDS of cas: 93-04-9.

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

Zeng, Renping published the artcilePreparation and application of microporous carbons as excellent adsorbents for reversible iodine capture and efficient removal of dye, Category: ethers-buliding-blocks, the publication is Diamond and Related Materials (2021), 108718, database is CAplus.

Because of the application of treating hazardous wastes such as organic dyes and radioactive iodine, the porous carbon with high adsorption capacity has been a research hotspot. In this work, by the pyrolysis method with KOH activation, the hypercrosslinked polynaphthalenes were used as carbonaceous precursors to prepare porous carbons, which showed high sp. surface areas between 943.8 and 2754.5 m² g^-1 with high micropore ratios. Notably, the microporous carbonaceous materials showed an excellent iodine capture capacity of 739 wt% and a high adsorption capacity of malachite green with 1194.8 mg g^-1. These porous carbons provided potential applications in environmental remediation as promising adsorbent materials for adsorption of radioactive iodine, and removal of organic pollutants from aqueous solutions

Diamond and Related Materials 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 C16H12O, Category: ethers-buliding-blocks.

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