Category: nitriles-buliding-blocks

Huang, Chun; Zhou, You; Yu, Xiao-Xiao; Wang, Li-Sheng; Wu, Yan-Dong; Wu, An-Xin published the artcile< I2/CuCl2-Copromoted Formal [4 + 1 + 1] Cyclization of Methyl Ketones, 2-Aminobenzonitriles and Ammonium Acetate: Direct Access to 2-Acyl-4-aminoquinazolines>, Electric Literature of 38487-85-3, the main research area is aminoquinazolinyl aryl methanone preparation; aryl ethanone aminobenzonitrile ammonium acetate cyclization.

An I2/CuCl2-copromoted diamination of C(sp3)-H bonds for the preparation of 2-acyl-4-aminoquinazolines I [Ar = Ph, 1-naphthyl, 4-MeOC6H4, etc.; R = 8-Me, 6-Cl, 7-MeO, etc.] from Me ketones, 2-aminobenzonitriles, and ammonium acetate was reported. This reaction featured operational simplicity, com. available substrates, mild reaction conditions, and good functional group compatibility. Mechanistic studies indicated that CuCl2 played a pivotal role in this transformation. This study uses a Me group as a novel input to construct 2-acyl-4-aminoquinazoline derivatives for the first time.

Journal of Organic Chemistry published new progress about Amination. 38487-85-3 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H8N2O, Electric Literature of 38487-85-3.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Liu, Hui; Yan, Yingkun; Li, Min; Zhang, Xiaomei published the artcile< An enantioselective aza-Friedel-Crafts reaction of 5-aminoisoxazoles with isatin-derived N-Boc ketimines>, Formula: C9H6ClNO, the main research area is isoxazole amino oxindole preparation enantioselective chiral phosphoric acid catalyst; aminoisoxazole isatin boc ketimine aza Friedel Crafts.

By employing a chiral phosphoric acid as a catalyst, an enantioselective aza-Friedel-Crafts reaction of 5-aminoisoxazoles with isatin-derived N-Boc ketimines was realized. The reaction provided a wide variety of novel 3-isoxazole 3-amino-oxindoles I (R1 = C6H5, 4-OMeC6H4, 4-FC6H4, etc.; R2 = Me, Et, Bn, Allyl; R3 = H, 5-Me, 5-Cl, etc.; R4 = H, Me, Et, Bn, Boc) with good yields (up to 99%) and moderate to good enantioselectivities (up to 99%). The absolute configuration of one product was assigned by X-ray crystal structural anal. and a plausible reaction mechanism was proposed. In addition, a scale-up reaction was performed successfully. Finally, one product was subjected to Suzuki-Miyaura coupling with phenylboronic acid to afford the product in a moderate yield without erosion of the enantioselectivity.

Organic & Biomolecular Chemistry published new progress about Enantioselective synthesis. 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, Formula: C9H6ClNO.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Jia, Qianfa; Lan, Yunfei; Ye, Xin; Lin, Yinhe; Ren, Qiao published the artcile< Direct access to multi-functionalized benzenes via [4 + 2] annulation of α-cyano-β-methylenones and α,β-unsaturated aldehydes>, HPLC of Formula: 21667-62-9 , the main research area is cyano butanone propenal metal free regioselective cycloaddition reaction; benzene preparation.

An efficient [4 + 2] benzannulation of α-cyano-β-methylenones and α,β-unsaturated aldehydes was achieved under metal-free reaction conditions selectively delivering a wide range of polyfunctional benzenes in high yields resp. (up to 94% yield).

RSC Advances published new progress about [4+2] Cycloaddition reaction (regioselective). 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, HPLC of Formula: 21667-62-9 .

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Romagnoli, Romeo; Prencipe, Filippo; Oliva, Paola; Kimatrai Salvador, Maria; Brancale, Andrea; Ferla, Salvatore; Hamel, Ernest; Viola, Giampietro; Bortolozzi, Roberta; Persoons, Leentje; Balzarini, Jan; Liekens, Sandra; Schols, Dominique published the artcile< Design, synthesis and biological evaluation of 2-alkoxycarbonyl-3-anilinoindoles as a new class of potent inhibitors of tubulin polymerization>, Product Details of C8H8N2O, the main research area is alkoxycarbonyl anilinoindole preparation docking tubulin polymerization SAR antiproliferative human; Antiproliferative activity; Indole; Microtubules; Structure-activity relationship; Tubulin.

A new class of inhibitors of tubulin polymerization based on 2-alkoxycarbonyl-3-(3′,4′,5′-trimethoxyanilino)indole mol. skeleton I [R1 = H, 6-Cl, 5-MeO, etc.; R2 = Me, Et, iso-Pr, etc.; R3 = Me, Et, n-Pr, Bn; X = H, MeO] was synthesized and evaluated for antiproliferative activity, inhibition of tubulin polymerization and cell cycle effects. The results presented show that methoxy substitution and location on indole nucleus played an important role in inhibition of cell growth, and the most favorable position for substituent was at C-6. In addition, a small-size ester function (methoxy/ethoxycarbonyl) at 2-position of the indole core was desirable. Also, analogs that were alkylated with Me, Et or Pr groups or had a benzyl moiety on the N-1 indolic nitrogen retained activity equivalent to those observed in the parent N-1H analogs. The most promising compounds of series I [R1 = 5-MeO, R2 = Me, R3 = H, X = H; R1 = 6-MeO, R2 = R3 = Me, X = MeO] targeted tubulin at colchicine site with antitubulin activities comparable to that of reference compound combretastatin A-4.

Bioorganic Chemistry published new progress about Antiproliferative agents. 38487-85-3 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H8N2O, Product Details of C8H8N2O.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Sawyer, J. Scott; Schmittling, Elisabeth A.; Palkowitz, Jayne A.; Smith, William J. III published the artcile< Synthesis of diaryl ethers, diaryl thioethers, and diaryl amines mediated by potassium fluoride-alumina and 18-crown-6: Expansion of scope and utility>, Reference of 94087-40-8, the main research area is crown ether mediator aromatic substitution; potassium fluoride alumina mediator aromatic substitution; aniline aromatic substitution aryl halide; thiophenol aromatic substitution aryl halide; phenol aromatic substitution aryl halide; diaryl ether thioether preparation; arylamine preparation; ether diaryl preparation; thioether diaryl preparation; amine diaryl preparation; sulfide diaryl preparation.

An efficient alternative to the Ullmann ether synthesis of diaryl ethers, diaryl thioethers, and diaryl amines involving the SNAr addition of a phenol, thiophenol, or aniline to an appropriate aryl halide, mediated by KF-alumina/18-crown-6 in MeCN or DMSO, is described. Expansion of the reaction conditions to include DMSO as solvent has resulted in a far greater range of substitution patterns permitted on the electrophile. For example, electronically unfavorable 3-chlorobenzonitrile could be condensed with 3-methoxyphenol to form the corresponding diaryl ether in 66% yield, a combination not normally amenable to Ullmann coupling. Electron-withdrawing groups present on the electrophile may be as diverse as nitro, cyano, formyl, acetyl, ester, amide, and even aryl. The method features a simple reaction procedure that provides products in generally good to excellent purified yields.

Journal of Organic Chemistry published new progress about Aromatic amines Role: SPN (Synthetic Preparation), PREP (Preparation). 94087-40-8 belongs to class nitriles-buliding-blocks, and the molecular formula is C7H3ClFN, Reference of 94087-40-8.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Chastrette, Maurice; Axiotis, Georges P. published the artcile< An efficient general synthesis of α-amino acetals>, COA of Formula: C6H11NO2, the main research area is nitrile dialkoxy organometallic addition reaction; amino acetal.

Title compounds H2NCRR1CR2(OEt)2 (R = Bu, Ph; R1 = Bu, Ph, H; R2 = H, Ph) were prepared in 60-95% yield by treating (EtO)2CR2CN with RMgBr or BuLi for 12 h at room temperature, adding BuLi, PhLi or LiAlH4 under N for 12-15 h at room temperature, and hydrolyzing the mixture using NH4Cl.

Synthesis published new progress about Organometallic compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, COA of Formula: C6H11NO2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Merritt, Eleanor A.; Bagley, Mark C. published the artcile< Convergent synthesis of the central heterocyclic domain of micrococcin P1>, Application In Synthesis of 6136-93-2, the main research area is thiazolylpyridine micrococcin P1 core preparation; aminopentadienone Bohlmann Rahtz intramol cyclodehydration; keto ester ammonium acetate amination microwave.

The heterocyclic domain I of micrococcin P1 was prepared from N-Boc-(2S,3R)-threonine in 15 steps and 9% overall yield utilizing a microwave-assisted enamine formation in mono- or multimode instruments, Bohlmann-Rahtz pyridine synthesis to form the 2,3,6-trisubstituted pyridine motif, and two-directional elaboration of the 3- and 6-thiazole substituents.

Synlett published new progress about Amination. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Application In Synthesis of 6136-93-2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Erickson, John G.; Montgomery, W. H.; Rorso, Ole published the artcile< Dialkoxyalkanenitriles. III. Hydrogenation to α-amino acetals>, COA of Formula: C6H11NO2, the main research area is .

The appropriate 2,2-dialkoxyalkanenitrile, solvent, and Raney Ni (and NH3 if used) pressured in an autoclave with stirring with about 100 atm. H, the mixture heated until H absorption was observed, held at this temperature, cooled when the H absorption ceased, centrifuged, and distilled gave the corresponding amino acetals. (MeO)2CHCN (I) (0.50 mol) in 80 cc. dioxane hydrogenated in the presence of 1.0 mol NH3 at 75-90° and 130 atm. yielded 38% H2NCH2CH(OMe)2 (II), b768 139.5°, f.p. below -78°, d25 0.9676, nD25 1.4144. A similar run in 80 cc. methylal at 75-80° and 135 atm. yielded 56% II; in 80 cc. cyclohexane at 80-90° and 87 atm. the yield was 67%. (EtO)2CHCN (III) (0.39 mol) in 80 cc. EtOH and 0.7 mol NH3 gave at 75-125° and 197 atm. 10% H2NCH2CH(OEt)2 (IV), b769 163°, f.p. below -78°, d25 0.9108, nD25 1.4142. A similar run in 75 cc. methylal with 0.8 mol NH3 at 75-80° and 197 atm. gave 85% IV. III (1.16 mol) and 2.3 mol NH3 in 240 cc. cyclohexane gave at 75-90° and 100 atm. 87% IV; a similar run in 275 cc. cyclohexane without NH3 at 75-80° and 100 atm. gave 67% IV and 13% HN[CH2CH(OEt)2]2, b1 86°, f.p. -30°, d25 0.9419, nD25 1.4250. (BuO)2CHCN (0.27 mol) and 0.5 mol NH3 in 85 cc. cyclohexane gave at 75-80° and 87 atm. 67% H2NCH2CH(OBu)2, b17 118°, b2 78° f.p. below -78°, d25 0.8835, nD25 1.4274. (MeO)2C(CN)Me (0.83 mol) and 3.0 mol NH3 in 300 cc. cyclohexane gave at 75-115° and 122 atm. 88% H2NCH2C(OMe)2Me, b751 146°, f.p. -70°, d25 0.9620, nD25 1.4220. (EtO)2C(CN)Ph (0.35 mol) and 1.5 mol NH3 in 40 cc. cyclohexane yielded at 100-50° and 163 atm. 71% H2NCH2C(OEt)2Ph, b0.5 68°, sets at -40° to a hard glass, d25 1.0050, nD25 1.4950.

Journal of the American Chemical Society published new progress about Acetals. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, COA of Formula: C6H11NO2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Wurz, Gerald; Hofer, Otmar; Greger, Harald published the artcile< Structure and synthesis of phenaglydon, a new quinolone derived phenanthridine alkaloid from Glycosmis cyanocarpa>, Safety of 2-Chloro-4-methylbenzonitrile, the main research area is phenaglydon phenanthridine alkaloid Glycosmis structure; schinifoline Glycosmis.

A novel quinolone derived alkaloid of the phenanthridine type, phenaglydon (I), has been isolated from the lipophilic leaf extract of Glycosmis cyanocarpa (Rutaceae) together with schinifoline (II), a prenylated 2-quinolinone characterized by a diene grouping in the side chain. Both structures have been elucidated on spectroscopic evidence. In the case of phenaglydon the proposed structure has addnl. been confirmed by synthesis. The co-occurrence of these alkaloids suggests close biogenetic connections between the two compounds

Natural Product Letters published new progress about Glycosmis cyanocarpa. 21423-84-7 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H6ClN, Safety of 2-Chloro-4-methylbenzonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Mass, Olga; Lindsey, Jonathan S. published the artcile< A trans-AB-Bacteriochlorin Building Block>, Recommanded Product: 2,2-Diethoxyacetonitrile, the main research area is bacteriochlorin preparation dihydrodipyrrin self condensation bromination.

Synthetic bacteriochlorins are of interest for fundamental studies in photochem. because of their strong absorption in the near-IR spectral region and close similarity with natural bacteriochlorophylls. A de novo route to 5-methoxybacteriochlorins entails self-condensation of a dihydrodipyrrin-acetal, which in turn is prepared from a 2-(2-nitroethyl)pyrrole species and an α,β-unsaturated ketone-acetal (e.g., 1,1-dimethoxy-4-methylpent-3-en-2-one). Here, four new results are reported concerning the synthesis of substituted bacteriochlorins. First, a new, scalable route to 1,1-dimethoxy-4-methylpent-3-en-2-one removes a significant previous impediment to the overall route. Second, the new route was employed to gain access to new α,β-unsaturated ketones and corresponding dihydrodipyrrins bearing alternative substituents in place of the dimethoxy unit. Third, a dihydrodipyrrin bearing a 1,3-dioxolan-2-yl moiety afforded the bacteriochlorin (30% yield) containing a 2-hydroxyethoxy substituent at the 5-position. Fourth, subsequent bromination proceeded regioselectively at the 15-position to give a trans-(5,15)-AB-bacteriochlorin building block I. The linear 5,15-substitution pattern is attractive for a number of mol. designs. The results taken together afford deeper understanding of the scope and limitations of the de novo route and also advance the capabilities for tailoring synthetic bacteriochlorins.

Journal of Organic Chemistry published new progress about Autocondensation reaction. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Recommanded Product: 2,2-Diethoxyacetonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts