Category: nitriles-buliding-blocks

Taylor, Edward C. published the artcilePteridines. XXXVII. A total synthesis of L-erythro-biopterin and some related 6-(polyhydroxyalkyl)pterins, Safety of 2-Aminomalononitrile 4-methylbenzenesulfonate, the publication is Journal of the American Chemical Society (1976), 98(8), 2301-7, database is CAplus and MEDLINE.

6-(1-Erythro-1′,2′-dihydroxypropyl)pterin was prepared by cupric acetate oxidation of 5-deoxy-L-arabinose to its osone, transoximation with acetone oxime to the α-ketoaldoxime, condensation with benzyl α-aminocyanoacetate methanesulfate to give II, cyclization with guanidine to biopterin 8-oxide, and deoxygenation with sodium dithionite. The overall yield was 12%. In analogous fashion, 6-(D-arabino-tetrahydroxybutyl)pterin and 6-D-threo-trihydroxypropyl)pterin were prepared from D-glucose and D-xylose, resp.

Journal of the American Chemical Society published new progress about 5098-14-6. 5098-14-6 belongs to nitriles-buliding-blocks, auxiliary class Nitrile,Salt,Sulfonic acid,Amine,Benzene, name is 2-Aminomalononitrile 4-methylbenzenesulfonate, and the molecular formula is C28H29NO4, Safety of 2-Aminomalononitrile 4-methylbenzenesulfonate.

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

Natte, Kishore published the artcilePalladium-Catalyzed Trifluoromethylation of (Hetero)Arenes with CF₃Br, Formula: C9H6F3NO, the publication is Angewandte Chemie, International Edition (2016), 55(8), 2782-2786, database is CAplus and MEDLINE.

The CF₃ group is an omnipresent motif found in many pharmaceuticals, agrochems., catalysts, materials, and industrial chems. Despite well-established trifluoromethylation methodologies, the straightforward and selective introduction of such groups into (hetero)arenes using available and less expensive sources is still a major challenge. In this regard, the selective synthesis of various trifluoromethyl-substituted (hetero)arenes by palladium-catalyzed C-H functionalization is herein reported. This novel methodol. proceeds under comparably mild reaction conditions with good regio- and chemoselectivity. As examples, trifluoromethylations of biol. important mols., such as melatonin, theophylline, caffeine, and pentoxifylline, are showcased.

Angewandte Chemie, International Edition published new progress about 261951-87-5. 261951-87-5 belongs to nitriles-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Nitrile,Benzene,Ether, name is 4-Methoxy-3-(trifluoromethyl)benzonitrile, and the molecular formula is C9H6F3NO, Formula: C9H6F3NO.

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

Rani, Dixita published the artcileAqueous synthesis of 2-aryl-3-nitro-2H-chromenes via L-prolinamide mediated tandem oxa-Michael Henry reactions, Category: nitriles-buliding-blocks, the publication is Journal of Molecular Structure (2022), 133341, database is CAplus.

An efficient and aqueous protocol was developed for the synthesis of 2-aryl-3-nitro-2H-chromene derivatives This protocol involves the L-prolinamide mediated tandem oxa-Michael Henry reaction between a variety of β-nitrostyrenes and salicylaldehyde. Among the screened solvents, the catalytic efficiency of prolinamides was found to be high in chloroform, but the best results were obtained in water to provide the 2-phenyl-3-nitro-2H-chromene in excellent yields. Substrate scope was also investigated using various substituted β-Nitrostyrenes. All reactions worked well to provide the corresponding products in very high yields. Theor. calculations were performed to find out the reaction pathways and nature of transition state at 3-21G* basis set and TS1 corresponding to the product (S)-3a, was found favorable by 1.13 kcal/mol over TS2 corresponding to the product (R)-3a.

Journal of Molecular Structure 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, Category: nitriles-buliding-blocks.

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

Wang, Hai-Jun published the artcilePd/C-Catalyzed Dehydrogenative [3+2] Cycloaddition for the Synthesis of Functionalized Tropanes, Name: (E)-4-(2-Nitrovinyl)benzonitrile, the publication is European Journal of Organic Chemistry (2018), 2018(39), 5456-5459, database is CAplus.

A Pd/C-catalyzed cascade approach for the synthesis of attractive benzo-fused tropanes was developed. The reaction proceeds through a sequential Pd/C-catalyzed dehydrogenative formation of azomethine ylides from amines and 1,3-dipolar cycloaddition It gave structurally complex benzo-fused tropanes in good yields with excellent diastereoselectivities under mild reaction conditions. Preliminary results of asym. version of the reaction reveal that the copper catalyst and chiral monophosphoramidite ligand can furnish optically active products with moderate ee.

European Journal of Organic Chemistry 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 C6H5BFNO4, Name: (E)-4-(2-Nitrovinyl)benzonitrile.

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

Deng, Lijuan published the artcileLigustrazine derivatives. Part 4: Design, synthesis, and biological evaluation of novel ligustrazine-based stilbene derivatives as potential cardiovascular agents, Synthetic Route of 612-13-5, the publication is Chemical Biology & Drug Design (2012), 79(5), 731-739, database is CAplus and MEDLINE.

A series of novel stilbene derivatives containing ligustrazinyl moiety was designed, synthesized, and assayed for their protective effects on damaged endothelial cells. The results showed that most ligustrazinyl stilbene derivatives exhibited high protective effects on the human umbilical vascular endothelial cells (HUVECs) damaged by hydrogen peroxide in comparison with Ligustrazine. Structure-activity relationships were briefly discussed.

Chemical Biology & Drug Design 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, Synthetic Route of 612-13-5.

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

Mills, L. Reginald published the artcileCobalt-Catalyzed C(sp²)-C(sp³) Suzuki-Miyaura Cross-Coupling Enabled by Well-Defined Precatalysts with L,X-Type Ligands, Quality Control of 214360-44-8, the publication is ACS Catalysis (2022), 12(3), 1905-1918, database is CAplus and MEDLINE.

Cobalt(II) halides in combination with phenoxyimine (FI) ligands generated efficient precatalysts in situ for the C(sp²)-C(sp³) Suzuki-Miyaura cross-coupling between alkyl bromides and neopentylglycol (hetero)arylboronic esters. The protocol enabled efficient C-C bond formation with a host of nucleophiles and electrophiles (36 examples, 34-95%) with precatalyst loadings of 5 mol %. Studies with alkyl halide electrophiles that function as radical clocks support the intermediacy of alkyl radicals during the course of the catalytic reaction. The improved performance of the FI-cobalt catalyst was correlated with decreased lifetimes of cage-escaped radicals as compared to those of diamine-type ligands. Studies of the phenoxy(imine)-cobalt coordination chem. validate the L,X interaction leading to the discovery of an optimal, well-defined, air-stable mono-FI-cobalt(II) precatalyst structure.

ACS Catalysis published new progress about 214360-44-8. 214360-44-8 belongs to nitriles-buliding-blocks, auxiliary class Nitrile,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is 4-(5,5-Dimethyl-1,3,2-dioxaborinan-2-yl)benzonitrile, and the molecular formula is C12H14BNO2, Quality Control of 214360-44-8.

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

Zhang, Wenjun published the artcileSynthesis of aryl acetamides by aminocarbonylation of benzylic chlorides using carbamoylsilane as an amide source, SDS of cas: 612-13-5, the publication is Synthetic Communications (2017), 47(7), 704-709, database is CAplus.

Using N-methyl-N-(1-phenyl)ethylcarbamoyl(trimethyl)silane as an amide source, the direct transformation of benzylic chlorides into the corresponding aryl acetamides through palladium-catalyzed aminocarbonylation is described. The electronic property and the relative position of substituents on the aromatic ring impact the coupling efficiency.

Synthetic Communications 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 C5H5BrN2, SDS of cas: 612-13-5.

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

Dou, Xiaowei published the artcileFrom the Feist-Benary reaction to organocatalytic domino Michael-alkylation reactions: asymmetric synthesis of 3(2 H)-furanones, Recommanded Product: (E)-4-(2-Nitrovinyl)benzonitrile, the publication is Chemistry – A European Journal (2012), 18(1), 85-89, S85/1-S85/45, database is CAplus and MEDLINE.

A modified Feist-Benary reaction by employing a domino Michael-alkylation sequence for the enantioselective preparation of 3(2H)-furanones is introduced. A L-threonine-derived tertiary amine/thiourea catalyst was synthesized to promote the domino Michael-alkylation reaction efficiently, affording the title compounds in high yields and excellent enantioselectivities.

Chemistry – A European Journal 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, Recommanded Product: (E)-4-(2-Nitrovinyl)benzonitrile.

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

Badger, G. M. published the artcilePorphyrins. V. The cyclization of linear tetrapyrroles, Recommanded Product: 2,4-Dimethyl-1H-pyrrole-3-carbonitrile, the publication is Australian Journal of Chemistry (1964), 17(9), 1013-21, database is CAplus.

cf. CA 61, 13265c. Tetrapyrrenes (I) were prepared by condensation of 3-acetyl-2,4-dimethylpyrrole (II) or of 3-cyano-2,4-dimethylpyrrole (III) with 5,5′-bis(methoxymethyl)-3,3′,4,4′-tetramethyldipyrromethane-HBr (IV). A mixture of 100 g. 5-ethoxycarbonyl-2,3,4trimethylpyrrole, 100 ml. 98% HCO₂H, and 100 ml. 48% HBr was heated 8 hrs. on a steam bath and left overnight to yield 83 g. 3,3′,4,4′,5,5′-hexamethyldipyrromethene-HBr (V), m. 308-10°. Br (16 g.) in 20 ml. HOAc was added during 30 min. to a stirred and heated mixture (70-5°) of 12 g. V in 100 ml. HOAc, and the mixture stirred 30 min. at 75° and cooled to yield 15 g. 5,5′-bis(bromomethyl)-3,3′,4,4′-tetramethyldipyrromethene-HBr (VI), m. >300°. VI (5 g.) in 50 ml. MeOH was refluxed 30 min., the solution cooled, 100 ml. ether added, the mixture left overnight at 0° the separated product dissolved in boiling C₆H₆, and the solution diluted with boiling petr. ether and cooled to yield 2.7 g. IV, m. 174-6°. The oxime of 2-ethoxycarbonyl-4-formyl-3,5-dimethylpyrrole was converted into the nitrile, mild alk. hydrolysis of which yielded 5-carboxy-3-cyano-2,4-dimethylpyrrole, which on decarboxylation by refluxing 1 hr. with ethanolamine yielded III, m. 107°. A solution of 1 g. IV and 0.75 g. II in 20 ml. C₆H₆ was refluxed 1 hr. and cooled to yield 0.92 g. I.HBr (R = Ac) (VI), m. 235° [decomposition, darkening at 225° (CHCl₃-petr. ether]. Similarly, 1.5 g. IV and 1 g. III in 30 ml. C₆H₆ was refluxed 1 hr., cooled, diluted with 15 ml. ether, and refrigerated to yield I.HBr (R = CN) (VII), m. 235-40° (decomposition) (CHCl₃-petr. ether). VI (0.I g.) was dissolved in 100 ml. MeOH, the mixture refluxed 1 hr., 0.2 g. Cu(OAc)₂ added, the mixt refluxed 48 hrs., MeOH evaporated, the residue extracted 3 hrs. (Soxhlet) with CHCl₃, the CHCl₃ extract concentrated, the residue dissolved in concentrated H₂SO₅, the solution left 3 hrs. at room temperature, poured on ice, the mixture extracted with CHCl₃, and the extract washed with NH₄OH, H₂O, dried, and chromatographed over grade IV Al₂O₃, using CHCl₃-petr. ether for elution. The red band exhibiting red fluorescence was eluted first, and the solution evaporated to give 1,2 – diacetyl – 3,4,5,6,7,8- hexamethylporphine (VIII), which was dissolved in CHCl₃, λ 420, 518, 556, 588 and 642.7 m. A portion of this solution was evaporated, the residue dissolved in 4:1 C₅H₅N-H₂O, NH₂OH.HCl added, and the mixture heated 30 min. on a steam-bath. The resulting solution showed λ 505, 537.5, 572.5 and 625.8 mμ. A 2nd portion of the CHCl₃ solution was evaporated, the residue dissolved in dioxane, aqueous NaBH₄ solution added, the mixture left overnight, worked up, and the product taken up in CHCl₃, washed with NH₄OH, H₂O, and dried. The resulting solution had 501.7, 534.2,568.3 and 623.3 mμ. Alternatively, 2 g. 1′,1,8′-dideoxy-1′,2,3,4,5,6,7,8′-octamethylbilene-b-HBr was dissolved in 1 l. MeOH by refluxing 1 hr., 4 g. Cu(OAc)₂ added, the mixture refluxed 1 week and filtered, the residue extracted 1 hr. (Soxhlet) with MeOH, the extract filtered (Celite), and the residue and Celite extracted again (Soxhlet) with CHCl₃ 2 hrs. (extract A) and then with fresh CHCl₃ for 18 hrs. (extract B). Cohen. of extract B yielded 0.05 g. VIII Cu complex, m. 316-18° (decomposition). Extract A was evaporated, the residue dissolved in 20 ml. concentrated H₂SO₄, the mixture left 1 hr., poured on 400 g. crushed ice and the separated solid extracted (Soxhlet) with CHCl₃ Evaporation of the CHCl₃ extract yielded 0.08 g. VIII, m. >360° as steel-blue-needles. Cyclization of VII under similar conditions gave 2 porphyrins, presumably 1-cyano-3,4,5,6,7,8hexamethylporphine (λ 412,516.2, 522,571,621 and 636 mμ) and 1,2-dicyano-3,4,5,O,7,8-hexamethylporphine (λ 420, 519, 555, 590.2 and 643.5 mμ) in poor yield.

Australian Journal of Chemistry published new progress about 26187-28-0. 26187-28-0 belongs to nitriles-buliding-blocks, auxiliary class Pyrrole,Nitrile, name is 2,4-Dimethyl-1H-pyrrole-3-carbonitrile, and the molecular formula is C7H8N2, Recommanded Product: 2,4-Dimethyl-1H-pyrrole-3-carbonitrile.

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

Wu, Christina C. N. published the artcileImmunotherapeutic activity of a conjugate of a Toll-like receptor 7 ligand, Quality Control of 115204-76-7, the publication is Proceedings of the National Academy of Sciences of the United States of America (2007), 104(10), 3990-3995, database is CAplus and MEDLINE.

The immunotherapeutic activity of Toll-like receptor (TLR) activators has been difficult to exploit because of side effects related to the release and systemic dispersion of proinflammatory cytokines. To overcome this barrier, we have synthesized a versatile TLR7 agonist, 4-[6-amino-8-hydroxy-2-(2-methoxyethoxy)purin-9-ylmethyl]benzaldehyde (UC-1V150), bearing a free aldehyde that could be coupled to many different auxiliary chem. entities through a linker mol. with a hydrazine or amino group without any loss of activity. UC-1V150 was covalently coupled to mouse serum albumin (MSA) at a 5:1 molar ratio to yield a stable mol. with a characteristically altered UV spectrum. Compared with the unconjugated TLR7 agonist, the UC-1V150/MSA was a 10-to 100-fold more potent inducer of cytokine production in vitro by mouse bone marrow-derived macrophage and human peripheral blood mononuclear cells. When administered to the lung, the conjugate induced a prolonged local release of cytokines at levels 10-fold or more higher than those found in serum. Under the same conditions, the untethered TLR7 ligand induced quick systemic cytokine release with resultant toxicity. In addition, two pulmonary infectious disease models were investigated wherein mice were pretreated with the conjugate and then challenged with either Bacillus anthracis spores or HIN1 influenza A virus. Significant delay in mortality was observed in both disease models with UC-1V150/MSA-pretreated mice, indicating the potential usefulness of the conjugate as a localized and targeted immunotherapeutic agent.

Proceedings of the National Academy of Sciences of the United States of America 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 C9H8O4, Quality Control of 115204-76-7.

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