Month: December 2022

Liu, Min published the artcilePd-Catalyzed Asymmetric Acyl-Carbamoylation of Alkene to Construct α-Quaternary Chiral Cycloketone, Synthetic Route of 68569-14-2, the publication is Organic Letters (2021), 23(16), 6299-6304, database is CAplus and MEDLINE.

The palladium-catalyzed asym. acyl-carbamoylation of alkene by employing thioesters as acyl electrophiles and t-BuNC as carbamoyl reagent, affording α-quaternary chiral cycloketones I [R = Me, Ph, 3-FC₆H₄, etc.; R¹ = 4-Me, 5-Cl, etc.] and II [Ar = Ph, 4-FC₆H₄, 3-MeOC₆H₄, etc.] in synthetically useful yields with excellent enantioselectivity was reported. The reaction proceeded via asym. 1,2-migratory insertions of acyl-Pd to alkenes and subsequent migratory insertion of isocyanides to C(sp³)-Pd^II. The product could be diversified to some valuable skeletons with retention of enantiopurity, demonstrating synthetic utility of this protocol.

Organic Letters published new progress about 68569-14-2. 68569-14-2 belongs to nitriles-buliding-blocks, auxiliary class Palladium, name is Tetrakis(acetonitrile)palladium(II) Ditriflate, and the molecular formula is C10H12F6N4O6PdS2, Synthetic Route of 68569-14-2.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Lin, Guimiao published the artcileA conjugate of octamer-binding transcription factor 4 and toll-like receptor 7 agonist prevents the growth and metastasis of testis embryonic carcinoma, Formula: C13H7Cl2N5, the publication is Journal of Translational Medicine (2015), 1-20, database is CAplus and MEDLINE.

Background: The immune non-recognition is often the underlying cause of failure in tumor immunotherapeutic. This is because most tumor-related antigens are poorly immunogenic, and fail to arouse an efficient immune response against cancers. Here we synthesized a novel TLR7 agonist, and developed a safe and effective immunotherapeutic vaccine by conjugating this TLR7 agonist with the pluripotency antigen OCT4. Methods: Purified recombinant OCT4 protein was covalently linked with a novel TLR7 agonist to form a TLR7-OCT4 conjugate (T7-OCT4). After conjugation, the in vitro release of IL-12 and IFN-γ was observed in spleen lymphocytes. Mice were immunized with TLR7-OCT4, and the release of IFN-γ, the percentages of CD3+/CD8+ T cells and the OCT4-specific cytotoxicity rates were measured. The immunized mice were challenged with mouse embryonic carcinoma (EC), and the tumor volume and tumor weight were determined Blood routine examination was performed to evaluate the biosafety of TLR7 agonist and TLR7-OCT4 conjugate in mice. Results T7-OCT4 conjugate significantly increased the in vitro release of IL-12 and IFN-γ by mouse spleen lymphocytes. In addition, the release of IFN-γ, the percentages of CD3+/CD8+ T cells and the tumor-specific cytotoxicity rates in immunized mice were significantly higher. Importantly, in EC xenografted mice, immunization with T7-OCT4 conjugate decreased the growth of the tumor dramatically up to 90 %, as compared to mice immunized with OCT4 protein or TLR7 agonist alone. Furthermore, blood routine examination demonstrated that no abnormalities of the blood cells and components in the blood fluids were detected by T7-OCT4 and TLR7 agonist injections. Conclusions: Our results showed that conjugating OCT4 protein to the novel TLR7 agonist produced a vaccine which is effective and safe in preventing tumor growth in mice. Our results suggest that this type of vaccine formulation has great potentiality in preventive vaccines against OCT4 expressing tumors.

Journal of Translational Medicine published new progress about 115204-76-7. 115204-76-7 belongs to nitriles-buliding-blocks, auxiliary class 5.6_Aromatics,Purines, name is 4-((2,6-Dichloro-9H-purin-9-yl)methyl)benzonitrile, and the molecular formula is C13H7Cl2N5, Formula: C13H7Cl2N5.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Cao, Xu published the artcileSynthesis and anticonvulsant activity evaluation of 7-alkoxy-2,4-dihydro-1H-benzo[b][1,2,4]triazolo[4,3-d][1,4]thiazin-1-ones in various murine experimental seizure models, Recommanded Product: 2-(Chloromethyl)benzonitrile, the publication is Medicinal Chemistry Research (2014), 23(4), 1829-1838, database is CAplus.

A novel series of 7-alkoxy-2,4-dihydro-1H-benzo[b][1,2,4]triazolo[4,3-d][1,4]-thiazin-1-ones have been synthesized and tested for their anticonvulsant activity using the maximal electroshock (MES) method. The majority of the compounds prepared were effective in the MES screens at a dose level of 100 mg/kg. Of the compounds tested, the most promising was 7-[(4-fluorobenzyl)oxy]-2,4-dihydro-1H-[1,2,4]-triazolo[4,3-d][1,4]-benzothiazin-1-one (I), which showed an ED₅₀ value of 9.2 mg/kg in the MES test in mice. Furthermore, the compound exhibited a PI value of 15.4 which was superior to the standard drug carbamazepine (PI value of 6.4). As well as demonstrating the anti-MES efficacy of compound I, its potency against seizures induced by pentylenetetrazole, 3-mercaptopropionic acid, and bicuculline were also established, with the results suggesting that several different mechanisms of action might be involved in its anticonvulsant activity, including the inhibition of voltage-gated ion channels and the modulation of GABAergic activity.

Medicinal Chemistry Research published new progress about 612-13-5. 612-13-5 belongs to nitriles-buliding-blocks, auxiliary class Organic Pigment, name is 2-(Chloromethyl)benzonitrile, and the molecular formula is C8H6ClN, Recommanded Product: 2-(Chloromethyl)benzonitrile.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Cui, Yuming published the artcileA highly efficient chiral-bridged diphosphine ligand modified cationic palladium(II) catalyst system for asymmetric alternating copolymerization of propene and carbon monoxide, Product Details of C10H12F6N4O6PdS2, the publication is Synlett (2009), 2696-2700, database is CAplus.

A highly efficient chiral-bridged biphenyl diphosphine ligand [(R_ax)-BuP] modified cationic palladium(II) catalyst system for the synthesis of optically active polyketone by stereoselective alternating copolymerization of propene and carbon monoxide is reported for the first time. The results show that [Pd(MeCN)₄][OTf]₂ is an excellent catalyst precursor in a mixed solvent of MeNO₂-MeOH. The highest catalytic activity was found to be 221 g polymer/(g Pd·h). A chiral polyketone with mol. weight M_n = 2.9 × 10⁴, polydispersity = 1.4, and molar optical rotation = +37° was afforded under optimized reaction conditions.

Synlett published new progress about 68569-14-2. 68569-14-2 belongs to nitriles-buliding-blocks, auxiliary class Palladium, name is Tetrakis(acetonitrile)palladium(II) Ditriflate, and the molecular formula is C10H12F6N4O6PdS2, Product Details of C10H12F6N4O6PdS2.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Ma, Xufeng published the artcileMixed Alkyl/Aryl Diphos Ligands for Iron-Catalyzed Negishi and Kumada Cross Coupling Towards the Synthesis of Diarylmethane, Recommanded Product: 2-(Chloromethyl)benzonitrile, the publication is ChemCatChem (2021), 13(24), 5134-5140, database is CAplus.

Mixed alkyl/aryl diphos ligands have been prepared and their application in iron-catalyzed cross coupling of benzylic chlorides with diaryl zinc (Negishi) or aryl Grignard reagents (Kumada) towards the synthesis of diarylmethane has been evaluated. The iron-diphos catalytic system exhibited the enhanced activity and selectivity in the two coupling reactions. The electron-rich mixed PPh₂/PCy₂ ligands outperformed their sym. PPh₂ congeners, and led to decreased homocoupling byproduct formation. It indicates that the electronic effect of the ligands plays an important role in the catalytic performance. The Fe catalyst bearing an electron-rich PCy₂ substituent and a sterically demanding tert-Bu on ethene backbone exhibited the best catalytic performance and good functional group tolerance in the two cross coupling reactions.

ChemCatChem published new progress about 612-13-5. 612-13-5 belongs to nitriles-buliding-blocks, auxiliary class Organic Pigment, name is 2-(Chloromethyl)benzonitrile, and the molecular formula is C8H6ClN, Recommanded Product: 2-(Chloromethyl)benzonitrile.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Luo, Jie published the artcileHighly diastereoselective and enantioselective direct Michael addition of phthalide derivatives to nitroolefins, Computed Properties of 5153-73-1, the publication is Chemical Communications (Cambridge, United Kingdom) (2013), 49(51), 5775-5777, database is CAplus and MEDLINE.

The first asym. Michael addition of 3-substituted phthalides to nitroolefins promoted by amino acid-incorporating multifunctional catalysts has been developed. The reported method led to the synthesis of 3,3-disubstituted phthalide derivatives in high yields, and in a highly diastereoselective and enantioselective manner. Facile synthesis of a chiral bicyclic lactam has also been demonstrated.

Chemical Communications (Cambridge, United Kingdom) published new progress about 5153-73-1. 5153-73-1 belongs to nitriles-buliding-blocks, auxiliary class Nitrile,Alkenyl,Nitro Compound,Benzene, name is (E)-4-(2-Nitrovinyl)benzonitrile, and the molecular formula is C9H6N2O2, Computed Properties of 5153-73-1.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Qiu, Jian published the artcileNi-Catalyzed Radical-Promoted Defluoroalkylborylation of Trifluoromethyl Alkenes To Access gem-Difluorohomoallylic Boronates, Synthetic Route of 238088-16-9, the publication is Organic Letters (2022), 24(12), 2446-2451, database is CAplus and MEDLINE.

Gem-Difluoroalkenyl boronates are attractive synthons for constructing diverse gem-difluoroalkenes and organoboron compounds However, the strategies for the construction of gem-difluorohomoallyl boronates has scarcely been described. Herein, authors develop an efficient protocol for the construction of gem-difluorohomoallylic boronates through a Ni-catalyzed radical-promoted defluoroalkylborylation of α-trifluoromethyl alkenes with α-haloboronates under mild conditions. This reaction features a broad substrate scope with good functional group tolerance and diverse transformations.

Organic Letters published new progress about 238088-16-9. 238088-16-9 belongs to nitriles-buliding-blocks, auxiliary class Nitrile,Boronic acid and ester,Aliphatic cyclic hydrocarbon,Boronic Acids,Boronate Esters, name is 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)butanenitrile, and the molecular formula is C10H18BNO2, Synthetic Route of 238088-16-9.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Li, Deng-Yuan published the artcileDirect access to substituted benzo[b]carbazoles through cascade annulation of 2-vinylbenzaldehydes with indoles, Category: nitriles-buliding-blocks, the publication is Chemical Communications (Cambridge, United Kingdom) (2019), 55(23), 3339-3342, database is CAplus and MEDLINE.

A highly efficient palladium-catalyzed cascade annulation of 2-vinylbenzaldehydes with indoles was achieved to afford 6-(3-indolyl)benzo[b]carbazoles I [R = H, 8-MeO, 8,9-di-F, etc.; R¹ = H, 1-MeO, 2-F, etc.; R² = H, 4-MeO, 5-Cl, etc.] under mild conditions in good yield and with excellent regioselectivity. Mechanistic investigations reveal that the reaction proceeded via double addition of indoles, unexpected intramol. 1,4-aryl and 1,2-hydrogen migrations and oxidative aromatization.

Chemical Communications (Cambridge, United Kingdom) published new progress about 68569-14-2. 68569-14-2 belongs to nitriles-buliding-blocks, auxiliary class Palladium, name is Tetrakis(acetonitrile)palladium(II) Ditriflate, and the molecular formula is C10H12F6N4O6PdS2, Category: nitriles-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Vlahakis, Jason Z. published the artcileSelective inhibition of heme oxygenase-2 activity by analogs of 1-(4-chlorobenzyl)-2-(pyrrolidin-1-ylmethyl)-1H-benzimidazole (clemizole): Exploration of the effects of substituents at the N-1 position, Computed Properties of 612-13-5, the publication is Bioorganic & Medicinal Chemistry (2013), 21(21), 6788-6795, database is CAplus and MEDLINE.

Several analogs based on the lead structure of 1-(4-chlorobenzyl)-2-(pyrrolidin-1-ylmethyl)-1H-benzimidazole (clemizole) were synthesized and evaluated as novel inhibitors of heme oxygenase (HO). Many of the compounds were found to be potent and highly selective for the HO-2 isoenzyme (constitutive), and had substantially less inhibitory activity on the HO-1 isoenzyme (inducible). The compounds represent the first report of highly potent and selective inhibitors of HO-2 activity, and complement our suite of selective HO-1 inhibitors. The study has revealed many candidates based on the inhibition of heme oxygenases for potentially useful pharmacol. and therapeutic applications.

Bioorganic & Medicinal Chemistry published new progress about 612-13-5. 612-13-5 belongs to nitriles-buliding-blocks, auxiliary class Organic Pigment, name is 2-(Chloromethyl)benzonitrile, and the molecular formula is C18H35NO, Computed Properties of 612-13-5.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts

Razafindrainibe, Franck published the artcileSonogashira Cross-Coupling Reaction of Bromocyanofluoro Pyridine Compounds: Access to 5- and 6-Alkynylfluoropyridinamidoximes Scaffolds, Quality Control of 1256788-71-2, the publication is European Journal of Organic Chemistry (2021), 2021(30), 4393-4397, database is CAplus.

A general two-step procedure to access hitherto unknown and under explored 5- and 6-alkynyl-3-fluoro-2-pyridinamidoximes I [R = 4-EtC₆H₄, 3-pyridyl, tridecyl, etc.; R¹ = (N’-hydroxycarbamimidoyl)] from 5- and 6-bromo-3-fluoro-2-cyanopyridines and a wide range of easily available and bench-stable terminal alkynes, using Sonogashira cross-coupling, as the first step was disclosed. The generation of the polar amidoxime group was realized at a late stage upon treatment of the alkynylfluorocyanopyridine I [R = 4-EtC₆H₄, 3-pyridyl, tridecyl, etc.; R¹ = CN] by hydroxylamine. This mild and operationally simple two-step room temperature process was compatible with enantiopure chiral substrates and various functionality including free alcs., unprotected and CBz-protected amines, acetonides, benzyl ethers, amide, imide, di-substituted alkynes and strained saturated heterocycles.

European Journal of Organic Chemistry published new progress about 1256788-71-2. 1256788-71-2 belongs to nitriles-buliding-blocks, auxiliary class Pyridine,Fluoride,Nitrile,Bromide, name is 6-Bromo-3-fluoropicolinonitrile, and the molecular formula is C6H2BrFN2, Quality Control of 1256788-71-2.

Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts