Author: Jessica.F

Shepard, Edwin R. published the artcilePapaverine analogs. IV. 1-Cycloalkyl-6,7-dimethoxyisoquinolines, Related Products of bromides-buliding-blocks, the publication is Journal of Organic Chemistry (1954), 415-18, database is CAplus.

cf. C.A. 47, 9970f. A number of 1-cycloalkylisoquinolines related to papaverine have been prepared for pharmacol. evaluation. Reduction of 120 g. Et cyclopentylacetate in 120 cc. ether with 20 g. LiAlH₄ in 100 cc. ether gives 82% β-cyclopentylethanol, b₂₃ 94-5°, which (72 g.), treated with an excess of anhydrous HBr, gives 99% β-cyclopentylethyl bromide (I), b₁₉ 76-8°. Adding 111 g. I to 62 g. NaCN in 125 cc. H₂O and 250 cc. Methyl Cellosolve with stirring and refluxing, refluxing the mixture 6 hrs., diluting it with H₂O, and extracting with ether give 80% β-cyclopentylpropionitrile, b₁₉ 98-100°, n_D²⁵ 1.4490, which (40 g.), refluxed 12 hrs. with 300 cc. 25% NaOH, gives 92% β-cyclopentylpropionic acid, b₁₄ 134-6°. Heating 36.2 g. homoveratrylamine and 22.8 g. cyclopentanecarboxylic acid 1 hr. at 190-200° in an open flask gives 73% N-homoveratrylcyclopentanecarboxamide, m. 95.5-6.5°. Similarly are prepared: N-homoveratrylcyclopentylacetamide, 90%, m. 88-9°; N-homoveratryl-β-cyclopentylpropionamide, 85%, m. 89-90°; N-homoveratrylcyclohexanecarboxamide, 84%, m. 111.5-12.5°; N-homoveratryl-β-cyclohexylpropionamide, 77%, m. 94.5-5.5°. These amides are converted into the following 1-cycloalkyl-6,7-dimethoxyisoquinolines-HCl according to the method described earlier: 1-cyclopentyl, 64%, m. 194-6.5°, coronary dilator and antispasmodic activity (CD) 0.9 (relative to papaverine-HCl as unity); 1-cyclopentylmethyl, 74%, m. 200-2°, CD 0.6; 1-β-cyclopentylethyl, 57%, m. 158-62.5°, CD 1; cyclohexyl, 41%, m. 166-8°, CD 1; 1-β-cyclohexylethyl, 56%, m. 203-4°, CD 0.3.

Journal of Organic Chemistry published new progress about 18928-94-4. 18928-94-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic cyclic hydrocarbon, name is (2-Bromoethyl)cyclopentane, and the molecular formula is C9H8O4, Related Products of bromides-buliding-blocks.

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

Karlstroem, Sofia published the artcileSubstituted 7-Amino-5-thio-thiazolo[4,5-d]pyrimidines as Potent and Selective Antagonists of the Fractalkine Receptor (CX₃CR1), HPLC of Formula: 76283-09-5, the publication is Journal of Medicinal Chemistry (2013), 56(8), 3177-3190, database is CAplus and MEDLINE.

The authors have developed two parallel series, A and B, of CX₃CR1 antagonists for the treatment of multiple sclerosis. By modifying the substituents on the 7-amino-5-thio-thiazolo[4,5-d]pyrimidine core structure, they were able to achieve compounds with high selectivity for CX₃CR1 over the closely related CXCR2 receptor. The structure-activity relationships showed that a leucinol moiety attached to the core-structure in the 7-position together with α-Me branched benzyl derivatives in the 5-position displayed promising affinity, and selectivity as well as physicochem. properties, as exemplified by compounds I and II. They show the preparation of the first potent and selective orally available CX₃CR1 antagonists.

Journal of Medicinal Chemistry published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C7H5Br2F, HPLC of Formula: 76283-09-5.

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

Grote, Michaela published the artcileSyntheses of novel modified acyclic purine and pyrimidine nucleosides as potential substrates of herpes simplex virus type-1 thymidine kinase for monitoring gene expression, Safety of 5-(2-Bromoethyl)-2,2-dimethyl-1,3-dioxane, the publication is Canadian Journal of Chemistry (2004), 82(4), 513-523, database is CAplus.

Suicide gene therapy with the herpes simplex virus type-1 thymidine kinase gene (HSV-1 tk) is considered to be a promising approach to the treatment of cancer. Making use of the lower specificity of the viral enzyme compared to human thymidine kinase, the therapy involves the administration of antiviral agents (e.g., ganciclovir) as prodrugs to induce enzymic cell death in those cells that express the transferred gene. ¹⁸F-labeled derivatives have been described for monitoring location, duration, and magnitude of the viral kinase enzyme activity by positron emission tomog. (PET). Since an optimal radiotracer has not been developed, novel substances were synthesized for monitoring gene expression. A group of 13 nucleoside analogs were synthesized, among them N¹-methyl-9-[(1,3-dihydroxy-2-propoxy)methyl]guanine and N¹-methyl-9-[(4-hydroxy)-3-hydroxymethylbutyl]guanine as Me analogs of ganciclovir and penciclovir and their related fluoro compounds Further novel derivatives include N⁶-methyl-9-[(1,3-dihydroxy-2-propoxy)methyl]-, N⁶-methyl-9-[(4-hydroxy)-3-hydroxymethylbutyl]adenine, as well as the uracil derivatives 5-hydroxy-1-[(1,3-dihydroxy-2-propoxy)methyl]uracil, 6-methyl-1-[(1,3-dihydroxy-2-propoxy)-methyl]uracil, and its 3-fluoro-derivative

Canadian Journal of Chemistry published new progress about 97845-58-4. 97845-58-4 belongs to bromides-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Bromide, name is 5-(2-Bromoethyl)-2,2-dimethyl-1,3-dioxane, and the molecular formula is C8H15BrO2, Safety of 5-(2-Bromoethyl)-2,2-dimethyl-1,3-dioxane.

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

Sugita, Hajime published the artcileUnusual cyclic polymerization through Suzuki-Miyaura coupling of polyphenylene bearing diboronate at both ends with excess dibromophenylene, Recommanded Product: Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, the publication is Chemical Communications (Cambridge, United Kingdom) (2017), 53(2), 396-399, database is CAplus and MEDLINE.

The Suzuki-Miyaura coupling polymerization of p-dibromophenylene and m-phenylenediboronic acid ester, as well as m-dibromophenylene and p-phenylenediboronic acid ester, and the combination of two meta-phenylene monomers in the presence of the t-Bu₃PPd(0) catalyst selectively afforded cyclic polyphenylenes with polyphenylene bearing boronate moieties at both ends when excess dibromophenylene was used.

Chemical Communications (Cambridge, United Kingdom) 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 C5H11NO2S, Recommanded Product: Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide.

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

Cheminet, Nathalie published the artcileElaboration of low-band-gap π-conjugated systems based on thieno[3,4-b]pyrazines, Formula: C4Br2N2O4S, the publication is Pure and Applied Chemistry (2020), 92(2), 335-353, database is CAplus.

In order to understand the electronic contribution of the thienopyrazine building block on the electronic properties of π-conjugated systems, small mols. containing thiophene and thienopyrazine moieties are synthesized and jointly studied by theor. (DFT) and exptl. methods (UV-Vis, UPS). Taking advantages of these preliminar attractive results, four low band gap extended structures have been elaborated on the base of Donor-Acceptor-Donor sequences (DAD); these elongated π-conjugated mols. exhibit noticeable electronic and absorption properties spreading from the near UV to NIR regions.

Pure and Applied Chemistry 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, Formula: C4Br2N2O4S.

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

Akitake, Masahiro published the artcileAccess to γ-Carbolines: Synthesis of Isocryptolepine, Quality Control of 89694-44-0, the publication is Journal of Organic Chemistry (2021), 86(24), 17727-17737, database is CAplus and MEDLINE.

A new method to synthesize γ-carboline derivatives has been developed starting from 3,5-dibromo-4-pyridinamine by monoarylation using the Suzuki-Miyaura cross-coupling reaction followed by the base-mediated ring closure to pyrrole formation. Synthesis of a series of γ-carboline derivations from the 4-brominated γ-carboline 4a has been achieved by employing various coupling reactions and N-alkylations. This method has been applied for the synthesis of the antimalarial and anticancer natural product isocryptolepine. The photophys. properties of novel γ-carboline derivations are also reported.

Journal of Organic Chemistry published new progress about 89694-44-0. 89694-44-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is 2-Bromo-5-methoxybenzene boronic acid, and the molecular formula is C7H8BBrO3, Quality Control of 89694-44-0.

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

Zhang, Ying-peng published the artcileA chalcone organic gel for oil spill recovery and wastewater treatment, Formula: C12H25Br, the publication is Colloids and Surfaces, A: Physicochemical and Engineering Aspects (2022), 128166, database is CAplus.

Oil spillage and water pollution are serious environmental disasters, which have a serious impact on the economy and ecosystem. To protect the environment,we have synthesized a new type of chalcone derivative (G1) gel. G1 can form gels in many organic solvents, fuels and edible oils. The FT-IR, SEM and XRD studies show that there are π-π stacking, Van der Waals and intermol. H-bonding force in the G1 gel self-assembly process. 3D networks structure provides a strong basis for the adsorption of dyes and the adsorption efficiency could be as high as 97.2%. The G1 can selectively gel in organic water pollutants, with recyclability. Even in the presence of salt, acid and alkali, it can be successfully used to recover spilled oil from oil-water mixture

Colloids and Surfaces, A: Physicochemical and Engineering Aspects 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 C10H11N3O3S, Formula: C12H25Br.

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

Matsumura, Yoshihiro published the artcileStereoselective homocoupling of phenylacetic acid derivatives utilizing electrochemically generated base, Quality Control of 594-81-0, the publication is Electrochimica Acta (1997), 42(13-14), 2233-2239, database is CAplus.

Electrochem. generated base (EGB) was cathodically prepared from pyrrolidone, and it was used as an efficient base to generate an anion of Me phenylacetate. The anion was oxidized by iodine to afford di-Me 2,3-diphenylsuccinate in high yield and high dl selectivity. Optically active 2,3-diphenylsuccinic acid derivatives was prepared by this EGB/iodine method. The oxidative homocoupling of Me phenylacetate was also achieved with a catalytic amount of iodine by using an electrochem. mediator system.

Electrochimica Acta published new progress about 594-81-0. 594-81-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 2,3-Dibromo-2,3-dimethylbutane, and the molecular formula is C6H12Br2, Quality Control of 594-81-0.

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

Akkuratov, Alexander V. published the artcileDesign of novel thiazolothiazole-containing conjugated polymers for organic solar cells and modules, Application In Synthesis of 303734-52-3, the publication is Solar Energy (2020), 605-611, database is CAplus.

One of the major challenges in the field of organic photovoltaics is associated with high-throughput manufacturing of efficient and stable organic solar cells. Practical realization of technologies for production of large-area organic solar cells requires the development of novel materials with a defined combination of properties ensuring sufficient reliability and scalability of the process in addition to good efficiency and operation stability of the devices. In this work, we designed two novel polymers comprising thiazolothiazole units and investigated their performance as absorber materials for organic solar cells and modules. Optimized small-area solar cells based on P1/[70]PCBM ([6,6]-phenyl-C71-butyric acid Me ester) blends exhibited promising power conversion efficiency (PCE) of 7.5%, while larger area modules fabricated using slot die coating showed encouraging PCE of 4.2%. Addnl., the fabricated devices showed promising outdoor stability maintaining 60-70% of the initial efficiency after 20 sun days being exposed to natural sunlight at the Negev desert. The obtained results feature the designed polymer P1 as a promising absorber material for a large-scale production of organic solar cells under ambient conditions.

Solar Energy published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Application In Synthesis of 303734-52-3.

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

Li, Yan published the artcileCobalt-catalysed enantioselective C(sp³)-C(sp³) coupling, COA of Formula: C4H10Br2CoO2, the publication is Nature Catalysis (2021), 4(10), 901-911, database is CAplus.

Enantioselective C(sp³)-C(sp³) coupling substantially impacts organic synthesis but remains challenging. Cobalt has played an important role in the development of homogeneous organometallic catalysis, but there are few examples of its use in asym. cross-coupling. Here, a cobalt-catalyzed enantioselective C(sp³)-C(sp³) coupling reaction, namely, alkene hydroalkylation, to access chiral fluoroalkanes was reported. This reaction represents a catalyst-controlled enantioselective coupling mode in which a tailor-made auxiliary is unnecessary; via this reaction, an aliphatic C-F stereogenic center can be introduced at the desired position in an alkyl chain.

Nature Catalysis published new progress about 18346-57-1. 18346-57-1 belongs to bromides-buliding-blocks, auxiliary class Cobalt, name is Cobalt(II) dibromo(1,2-dimethoxyethane), and the molecular formula is C4H10Br2CoO2, COA of Formula: C4H10Br2CoO2.

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