Month: November 2022

Thiemann, Thies published the artcileStudies towards dibenzothiophene S-oxide arrays and their photochemical reactivity, Category: bromides-buliding-blocks, the publication is Kyushu Daigaku Kino Busshitsu Kagaku Kenkyusho Hokoku (2001), 15(1), 63-71, database is CAplus.

A novel access to oligo(dibenzothiophenes) is described Here, the trimethylsilyl-group is used both as positional protective group and as a directive group which can be exchanged. The reagents benzyltrimethylammonium tribromide (BTMABr₃) and benzyltrimethylammonium iododichloride (BTMAICl₂) are used for the first time in silyl-halo exchange reactions. The dimeric, trimeric and tetrameric dibenzothiophene building blocks are prepared by Suzuki-Kumada C-C coupling reactions. Exemplary oxygenations of these building blocks to the corresponding dibenzothiophene S-oxides is shown.

Kyushu Daigaku Kino Busshitsu Kagaku Kenkyusho Hokoku published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C4H7BrO2, Category: bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Jeong, Jaemyeng published the artcileSynthesis and characterization of triphenylamine-based polymers and their application towards solid-state electrochromic cells, Recommanded Product: 2,5-Dibromo-3,4-dinitrothiophene, the publication is RSC Advances (2016), 6(82), 78984-78993, database is CAplus.

Four novel triphenylamine-based polymers, PJK1, PJK2, PJK3 and PJK4 were successfully synthesized and fully characterized by ¹H NMR, UV-VIS spectroscopy, cyclic voltammetry (CV), GPC and spectroelectrochem. These polymers are easily soluble in many common organic solvents, which make them appropriate for film deposition via spray-coating. We fabricated electrochromic cells comprising ITO-coated glass/polymer/gel electrolyte/ITO-coated glass and patterned the color change by applying d.c. with different voltages. We report herein color changes, from the neutral to oxidized form as follows: for PJK1, orange to dark green; for PJK2, light yellow to reddish brown; for PJK3, light blue to gray; and for PJK4, green to bluish green. The majority of the copolymers exhibited very good thermal stabilities, as evidenced by less than a 5% weight loss in temperatures exceeding 400°C. To further characterize, we simulated the electrochem. and optical properties, which are good agreement with the exptl. data.

RSC Advances published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, Recommanded Product: 2,5-Dibromo-3,4-dinitrothiophene.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Sharma, Ravinder published the artcileVolumetric and acoustic properties of L-phenyl glycine and L-phenylalanine in aqueous solution of 1-dodecyl-3-methylimidazolium bromide [C₁₂mim] [Br], Recommanded Product: 1-Bromododecane, the publication is Journal of Molecular Liquids (2022), 119014, database is CAplus.

To study the mol. interactions between the ternary mixtures containing long chain imidazolium based ionic liquid as a common solvent with substituted amino acids L-Ph glycine and L-phenylalanine resp., densities and speed of sound have been measured at three different temperatures viz. T = 288.15 K, 298.15 K, 318.15 and 318.15 K under 0.1 MPa pressure. The d. and speed of sound data have been further utilized to calculate the apparent molar volume and apparent molar isentropic compression. From the data obtained, apparent molar volume (V_ϕ), partial molar volume (V⁰_ϕ), and standard partial molar volumes of transfer (ΔV⁰_ϕ). Pos. values of apparent molar volume indicate strong interactions. Also, partial molar isentropic compression of transfer (ΔK⁰_ϕ,S) and partial molar isentropic compression (K_ϕ,S) have been calculated from the sound of speed. Furthermore, structure making and structure breaking ability of solute have been discussed by evaluation of apparent molar expansivity, (ϕ⁰_E), Hepler′s constant values (∂/∂T)p. The obtained results have been discussed in terms of solvation behavior, structural changes and various interactions present in different ternary mixtures (1-dodecyl-3-methylimidazolium bromide + amino acids + water).

Journal of Molecular Liquids published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C18H34N4O5S, Recommanded Product: 1-Bromododecane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kaur, Ramanjeet published the artcileA thermodynamic investigation of the effect of cationic structure on the self-aggregation behavior of Surface-Active ionic liquids in the presence of an amino acid, Application of 1-Bromododecane, the publication is Journal of Molecular Liquids (2022), 118904, database is CAplus.

A series of imidazolium-based ionic liquids (ILs) with varying side alkyl chain length at N3 position which includes [C12mim][Br], [C12eim][Br], and [C12bim][Br] have been synthesized and characterized by ¹H NMR. Then, their aggregation behavior in the presence of different concentrations of the amino acid L-Tryptophan (L-Trp) at different temperatures has been examined using conductometric, tensiometric, and UV-vis (absorption spectra) techniques. The critical micelle concentration (CMC) of ILs has been investigated in the absence and presence of amino acid to acquire a better understanding of the colloidal behavior of ILs in presence of amino acid as an external additive. The addition of amino acid is observed to reduce the CMC values of the ILs examined in an aqueous media. Likewise, applying a charged pseudo-phase model of micellization, the thermodn. parameters of micellization, such as a change in standard free energy (ΔGom), change in standard enthalpy (ΔHom), and change in standard entropy (ΔSom), have been scrutinized from the dependence of CMC on temperature The surface tension approach was also used to evaluate interfacial characteristics. It was discovered that increasing the length of the side chain increases surface activity. All of the estimated parameters were utilized to determine the electrostatic and hydrophobic contributions of IL to the formation of micellar aggregates.

Journal of Molecular Liquids published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, Application of 1-Bromododecane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Malysheva, S. F. published the artcileChemoselective Synthesis of Alkylphosphinic Acids from Red Phosphorus and Alkyl Bromides in the System KOH/H₂O/Toluene/Micellar Catalyst, COA of Formula: C12H25Br, the publication is Russian Journal of Organic Chemistry (2022), 58(2), 192-199, database is CAplus.

Alkylphosphinic acids, including long-chain ones, were synthesized in up to 76% yields from red P and n-AlkBr (Alk = C₄-C₁₄) under micellar catalysis conditions. The reaction proceeds efficiently and chemoselectively upon heating (85-90°, 6 h) in a KOH/H₂O/toluene/cetyltrimethylammonium bromide system.

Russian Journal of Organic Chemistry published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, COA of Formula: C12H25Br.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Malysheva, S. F. published the artcileChemoselective Synthesis of Alkylphosphinic Acids from Red Phosphorus and Alkyl Bromides in the System KOH/H₂O/Toluene/Micellar Catalyst, Computed Properties of 111-83-1, the publication is Russian Journal of Organic Chemistry (2022), 58(2), 192-199, database is CAplus.

Alkylphosphinic acids, including long-chain ones, were synthesized in up to 76% yields from red P and n-AlkBr (Alk = C₄-C₁₄) under micellar catalysis conditions. The reaction proceeds efficiently and chemoselectively upon heating (85-90°, 6 h) in a KOH/H₂O/toluene/cetyltrimethylammonium bromide system.

Russian Journal of Organic Chemistry published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Computed Properties of 111-83-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Sommer, Stefan published the artcileSolid-phase synthesis of [5.5]-spiroketals, Synthetic Route of 69361-41-7, the publication is Advanced Synthesis & Catalysis (2008), 350(11+12), 1736-1750, database is CAplus.

An efficient and reliable multi-step synthesis of 251 natural product-like [5.5]-spiroketals on solid supports has been developed. As central key step, a double intramol. hetero-Michael (DIHMA) reaction to alkynones was applied. The sequence allows for introduction of numerous substituents on the scaffold and for variation of stereochem. [5.5]-Spiroketals bearing an addnl. ketone were obtained in high overall yields. Further diversification was achieved by reduction of the ketone and reductive amination using polymer-supported borohydride, Grignard reaction and conversion to oxime derivatives in the solution phase.

Advanced Synthesis & Catalysis published new progress about 69361-41-7. 69361-41-7 belongs to bromides-buliding-blocks, auxiliary class PROTAC Linker,Aliphatic Linker, name is (4-Bromobut-1-yn-1-yl)trimethylsilane, and the molecular formula is C15H12O6, Synthetic Route of 69361-41-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Chen, Bo published the artcileManganese(III)-Promoted Double Carbonylation of Anilines Toward α-Ketoamides Synthesis, Recommanded Product: 1-Bromooctane, the publication is Advanced Synthesis & Catalysis (2022), 364(3), 487-492, database is CAplus.

Employing anilines as nucleophiles in double carbonylation is a longstanding challenge. In this communication, a Mn(III)-promoted double carbonylation of alkylborates or Hantzsch esters with anilines toward the synthesis of α-ketoamides has been developed. By using easily available potassium alkyltrifluoroborates or Hantzsch esters as the starting material, and cheap and non-toxic Mn(OAc)₃ · 2H₂O as the promotor, a broad range of alkyl α-ketoamide derivatives were synthesized in moderate to good yields with excellent selectivity.

Advanced Synthesis & Catalysis published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Recommanded Product: 1-Bromooctane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Wojcieszak, Marta published the artcileSurface activity and phytotoxicity of morpholinium herbicidal ionic liquids, Safety of 1-Bromododecane, the publication is Journal of Molecular Liquids (2022), 119750, database is CAplus.

The use of efficient synthesis methods to obtain novel herbicidal ionic liquids (HILs) with biol. activity is extremely important because it can eliminate certain neg. environmental impacts. The authors of this work succeeded in the experiment, which resulted in the synthesis of 18 novel ionic liquids with high yields. Furthermore, a number of physicochem. and biol. properties have been investigated, including surface activity, thermal anal., and phytotoxicity. In addition, it was proven that morpholinium ionic liquids with phenoxyacid anions were more effective against cress than HILs previously studied in the literature. To the best of our knowledge, this is the first report of surface-active ionic liquids with herbicidal anions where leaf surfaces were used for anal. An important aspect of this work was to compare the wettability of the surfaces of wheat leaves and weeds. Moreover, it was shown that using paraffin as a reference surface was not sufficient to describe the wetting properties of HILs. The research reported here proved that morpholinium ionic liquids were effective in wetting weed surfaces while they do not adversely affect wheat leaf surfaces. Our results could be significant for meeting the environmental challenges and agricultural demands of the future.

Journal of Molecular Liquids published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C11H14O4, Safety of 1-Bromododecane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Wojcieszak, Marta published the artcileSurface activity and phytotoxicity of morpholinium herbicidal ionic liquids, HPLC of Formula: 111-83-1, the publication is Journal of Molecular Liquids (2022), 119750, database is CAplus.

The use of efficient synthesis methods to obtain novel herbicidal ionic liquids (HILs) with biol. activity is extremely important because it can eliminate certain neg. environmental impacts. The authors of this work succeeded in the experiment, which resulted in the synthesis of 18 novel ionic liquids with high yields. Furthermore, a number of physicochem. and biol. properties have been investigated, including surface activity, thermal anal., and phytotoxicity. In addition, it was proven that morpholinium ionic liquids with phenoxyacid anions were more effective against cress than HILs previously studied in the literature. To the best of our knowledge, this is the first report of surface-active ionic liquids with herbicidal anions where leaf surfaces were used for anal. An important aspect of this work was to compare the wettability of the surfaces of wheat leaves and weeds. Moreover, it was shown that using paraffin as a reference surface was not sufficient to describe the wetting properties of HILs. The research reported here proved that morpholinium ionic liquids were effective in wetting weed surfaces while they do not adversely affect wheat leaf surfaces. Our results could be significant for meeting the environmental challenges and agricultural demands of the future.

Journal of Molecular Liquids published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C9H10ClN5, HPLC of Formula: 111-83-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary