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Bakibaev, Abdigali A.’s team published research in Journal of Heterocyclic Chemistry in 2020-12-31 | CAS: 598-50-5

Journal of Heterocyclic Chemistry published new progress about Condensation reaction. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Formula: C2H6N2O.

Bakibaev, Abdigali A. published the artcileSynthesis of glycolurils and hydantoins by reaction of urea and 1, 2-dicarbonyl compounds using etidronic acid as a “”green catalyst””, Formula: C2H6N2O, the main research area is glycoluril green preparation; hydantoin green preparation; urea dicarbonyl compound condensation etidronic acid catalyst.

A new, rather simple and efficient method for the synthesis of a number of glycoluryls I [R1 = H, Me; R2 = H, Me; R3 = H, Me, Ph; R4 = H, Me, Ph] and hydantoins II [R5 = H, Me] in water using a etidronic acid (HEDP) as green catalyst was developed. So, for the first time, the condensation reaction of ureas with 1,2-dicarbonyl compounds was carried out in the presence of HEDP. Also based on NMR studies, a chemism of these reactions, which is stepwise, was proposed. The remaining aqueous filtrate containing HEDP after the reaction could be reused for other cycles synthesis of glycoluril and other compounds, because HEDP was not converted during the reaction.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Peng, Panpan’s team published research in New Journal of Chemistry in 2019 | CAS: 1455-77-2

New Journal of Chemistry published new progress about Condensation reaction. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, Application of 3,5-Diamino-1,2,4-triazole.

Peng, Panpan published the artcileSynthesis of energetic salts containing three heterocyclic anions by a one-pot condensation reaction, Application of 3,5-Diamino-1,2,4-triazole, the main research area is energetic salt heterocyclic anion preparation one pot reaction safety.

Heterocyclic energetic salts are extensively used in energetic materials due to their excellent mol. designability. Generally, most inorganic or organic anionic energetic ionic salts contain only one anion or two anions at most. Thus far, energetic ion salts containing three organic energetic anions have not been reported. In this study, we develop a new method for the preparation of energetic ion salts containing three heterocyclic anions via a one-step one-pot condensation reaction. The proposed strategy is based on aldehydes, aminoguanidine salts, and heterocyclic energetic ionic salts. In this work, energetic salt 1 containing three 5-nitrotetrazole anions and energetic salt 2 containing three 3,5-dinitro-1,2,4-triazole anions were successfully synthesized. The results of NMR, IR, and MS proved that the products (1 and 2) contain three heterocyclic anions. The energetic test results indicate that products 1 and 2 have extremely high decomposition temperatures (250 °C and 308 °C) and exhibit low sensitivities (for both 1 and 2, FS > 360 N, IS > 40 J). Meanwhile, their detonation velocities (7306 m s-1 and 7375 m s-1) and detonation pressures (18.3 GPa and 19.7 GPa) are better than those of TNT. This indicates that 1 and 2 have great potential to be applied as heat-resistant insensitive explosives. In addition, the X-ray diffraction results of the non-energetic, p-toluenesulfonic acid anions of product 3 not only further verify the structure of the three heterocyclic anions mentioned above, but also confirm the universality of this method.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Peng, Panpan’s team published research in New Journal of Chemistry in 2019 | CAS: 1455-77-2

Peng, Panpan published the artcileSynthesis of energetic salts containing three heterocyclic anions by a one-pot condensation reaction, Formula: C2H5N5, the main research area is energetic salt heterocyclic anion preparation one pot reaction safety.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Dastjerdi, Neda Mollakarimi’s team published research in Green Chemistry Letters and Reviews in 2020 | CAS: 86-51-1

Green Chemistry Letters and Reviews published new progress about Condensation reaction. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, SDS of cas: 86-51-1.

Dastjerdi, Neda Mollakarimi published the artcileUltrasound-promoted green approach for the synthesis of multisubstituted pyridines using stable and reusable SBA-15@ADMPT/H5PW10V2O40 nanocatalyst at room temperature, SDS of cas: 86-51-1, the main research area is silica ADMPT nanocatalyst pyridine synthesis room temperature.

A facile one-pot protocol for the synthesis of 2-amino-3-cyanopyridins using SBA-15@Triazine/H5PW10V2O40 as an efficient catalyst under ultrasonic conditions has been developed. The nanohybrid catalyst was prepared by the chem. anchoring of Keggin heteropolyacid H5PW10V2O40 onto the surface of SBA-15 mesoporous silica modified with 2-APTS -4,6-bis(3,5-dimethyl-1H-pyrazol- 1-yl)-1,3,5-triazine (ADMPT) linker. Then the nanohybrid was used as a green, efficient, eco-friendly, and highly recyclable catalyst for the one-pot and multi-component synthesis of 2-amino-3-cyanopyridin derivatives from the reaction of aldehydes, malononitrile, cyclic ketones and ammonium acetate under ultrasound waves with good to excellent yields (79-95%) and in a short span of time. This nanocatalyst was characterized by using FT-IR, XRD, SEM, TEM, BET, and EDX techniques.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Qin, Ling-yan’s team published research in Journal of Chemical Research in 2019-03-31 | CAS: 151-10-0

Journal of Chemical Research published new progress about Condensation reaction. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, HPLC of Formula: 151-10-0.

Qin, Ling-yan published the artcileAn improved and practical synthesis of Fmoc Rink linker, HPLC of Formula: 151-10-0, the main research area is solid phase peptide synthesis Fmoc Rink linker solvent effect; hydroxybenzaldehyde ethyl bromoacetate oxidation Friedel Crafts acylation Lewis acid; hydrolysis reductive amination hydroxylamine hydrogenation zinc catalyst condensation fluorenylmethoxycarbonyl.

Fmoc Rink linker (Fmoc = 9-fluorenylmethoxycarbonyl) is a widely used peptide-resin linker in the solid-phase synthesis of peptide-amides. This paper describes an improved and practical eight-step synthetic approach for this compound in a 50% overall yield, using p-hydroxybenzaldehyde as the starting material. The procedure is operationally simple and amenable to scale-up synthesis.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Baranov, Vladimir V.’s team published research in Mendeleev Communications in 2019-01-31 | CAS: 598-50-5

Mendeleev Communications published new progress about Condensation reaction. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Recommanded Product: 1-Methylurea.

Baranov, Vladimir V. published the artcileA first synthesis of 8- and 8,10-substituted barbiturils and their thio analogues, Recommanded Product: 1-Methylurea, the main research area is barbituril preparation; alkyl urea formaldehyde barbituric acid multicomponent condensation.

Multicomponent condensations of alkyl(thio)ureas R1NHC(=X)NHR2 (R1 = Me, Et; R2 = H, Me, Et; X = O, S), formaldehyde and (thio)barbituric acids as 1,3-diazinane-2,4,6-trione, 2-sulfanylidene-1,3-diazinane-4,6-dione afford new spiro heterocyclic compounds, I (Y = O, S) viz., 8- and 8,10-substituted 2,4,8,10-tetraazaspiro[5.5]undecane-1,3,5,9-tetraones (barbiturils) and their thio analogs.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Montgomery, Deanna’s team published research in Molecules in 24 | CAS: 371766-08-4

Molecules published new progress about 371766-08-4. 371766-08-4 belongs to isoquinoline, auxiliary class Isoquinoline,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is Isoquinolin-5-ylboronic acid, and the molecular formula is C9H8BNO2, Product Details of C9H8BNO2.

Montgomery, Deanna published the artcileStructure-activity relationships of 7-substituted dimethyltyrosine-tetrahydroisoquinoline opioid peptidomimetics, Product Details of C9H8BNO2, the publication is Molecules (2019), 24(23), 4302, database is CAplus and MEDLINE.

The opioid receptors modulate a variety of biol. functions, including pain, mood, and reward. As a result, opioid ligands are being explored as potential therapeutics for a variety of indications. Multifunctional opioid ligands, which act simultaneously at more than one type of opioid receptor, show promise for use in the treatment of addiction, pain, and other conditions. Previously, we reported the creation of bifunctional kappa opioid receptor (KOR) agonist/mu opioid receptor (MOR) partial agonist ligands from the classically delta opioid receptor (DOR) antagonist selective dimethyltyrosine-tetrahydroisoquinoline (Dmt-Tiq) scaffold through the addition of a 7-benzyl pendant on the tetrahydroisoquinoline ring. This study further explores the structure-activity relationships surrounding 7-position pendants on the Dmt-Tiq scaffold. Some analogs maintain a KOR agonist/MOR partial agonist profile, which is being explored in the development of a treatment for cocaine addiction. Others display a MOR agonist/DOR antagonist profile, which has potential to be used in the creation of a less addictive pain medication. Ultimately, we report the synthesis and in vitro evaluation of novel opioid ligands with a variety of multifunctional profiles.

Referemce:
https://en.wikipedia.org/wiki/Isoquinoline,
Isoquinoline | C9H7N – PubChem

Basu, Umaprasanna et al. published their research in Journal of the Indian Chemical Society in 1931 | CAS: 52903-71-6

1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.HPLC of Formula: 52903-71-6

β-Diketones in ring formation was written by Basu, Umaprasanna. And the article was included in Journal of the Indian Chemical Society in 1931.HPLC of Formula: 52903-71-6 The following contents are mentioned in the article:

To ascertain the influence of a neg. substituent such as CO₂Et, COR, etc., at the methylene C atom of a β-diketonic compound in governing the course of the reaction with substances like CNCH₂CONH₂ (I) containing a reactive :CH₂ group, Me-COCH(CO₂Et)COMe (II) was treated with dilute alc. I in the presence of a little pyridine. On acidification there was formed 2-keto-3-cyano-4-methyl-6-hydroxy-1,2-dihydropyridine, CH: C(OH). NH. CO. C(CN): CMe (III), m. 304° (decomposition), hydrolyzed to 4-methyl 2,6-dihydroxypyridine. III was also synthesized from MeCOCH₂CO₂Et and I. The question arises as to whether the C:C linkage formed by enolization is responsible for the initial condensation or if the CO group remaining as such is the center of reaction. EtOCMe:CHCO₂Et, HOCMe:CHCO₂Et and H₂NCMe:CHCO₂Et all condensed with I to form III. Et cyclohexanone-2-carboxylate was condensed with I to produce 3-keto-4-cyano-1-hydroxy-2,3,5,6,7,8-hexahydroisoquinoline (IV), m. 278°, which, when heated with fuming HCl at 180° for 5 hrs., was hydrolyzed to 1,3-dihydroxy-5,6,7,8-tetrahydroisoquinoline, m. 205°. IV was also obtained as the NH₄ salt when Et tetrahydroanthranilate (V) was treated with I at 120° for 25 min. although V does not condense with PhCH:CAcBz (VI), facts pointing to the preferential addition of the :CH₂ group to the C:C linkage. Heating BzCH:CMeNH₂ (VII) with I gave 3-cyano-4-methyl-6-phenyl-2-pyridone, m. 310°, methylated to 3-cyano-1,4-dimethyl-6-phenyl-2-pyridone, m. 265°, which on hydrolysis was converted into 1,4-dimethyl-6-phenyl-2-pyridone-HCl. VII has been found to react with VI, but from a similar experiment with AcCMe: CMeNH₂ where there is no methine H atom, no condensation product was isolated, whereas p-MeC₆H₄COCH: CMeNH₂ gave 2-methyl-4,6-diphenyl-3-p-toluyl-5-acetyl-1,4-dihydropyridine, m. 183°, when heated with VI (C. A. 25, 4881). This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6HPLC of Formula: 52903-71-6).

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Yixuan et al. published their research in Molecules in 2019 | CAS: 75476-83-4

7-Iodoisoquinoline (cas: 75476-83-4) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Formula: C9H6IN

Synthesis and broad antiviral activity of novel 2-aryl-isoindolin-1-ones towards diverse enterovirus A71 clinical isolates was written by Wang, Yixuan;Wang, Huiqiang;Jiang, Xinbei;Jiang, Zhi;Guo, Tingting;Ji, Xingyue;Li, Yanping;Li, Yuhuan;Li, Zhuorong. And the article was included in Molecules in 2019.Formula: C9H6IN The following contents are mentioned in the article:

Enterovirus 71 (EV-A71) is the main causative pathogen of childhood hand, foot and mouth disease. Effective medicine is currently unavailable for the treatment of this viral disease. Using the fragment-hopping strategy, a series of 2-aryl-isoindolin-1-one compounds were designed, synthesized and investigated for their in vitro antiviral activity towards multiple EV-A71 clin. isolates (H, BrCr, Shenzhen98, Jiangsu52) in Vero cell culture in this study. The structure-activity relationship (SAR) studies identified 2-phenyl-isoindolin-1-ones as a new potent chemotype with potent antiviral activity against EV-A71. Ten out of the 24 tested compounds showed significant antiviral activity (EC50 < 10 muM) towards four EV-A71 strains. Compounds A3 and A4 exhibited broad and potent antiviral activity with the 50% effective concentration (EC50) values in the range of 1.23-1.76 muM. Moreover, the selectivity indexes of A3 and A4 were significantly higher than those of the reference compound, pirodavir. The western blotting experiment indicated that the viral VP1 was significantly decreased at both the protein and RNA level in a dose-dependent manner following treatment with compound A3. Moreover, compound A3 inhibited the viral replication by acting on the virus entry stage. In summary, this study led to the discovery of 2-aryl-isoindolin-1-ones as a promising scaffold with potent anti-EV-A71 activities, which deserves further in-depth studies. This study involved multiple reactions and reactants, such as 7-Iodoisoquinoline (cas: 75476-83-4Formula: C9H6IN).

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Flyer, Alec N. et al. published their research in Nature Chemistry in 2010 | CAS: 75476-83-4

7-Iodoisoquinoline (cas: 75476-83-4) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Product Details of 75476-83-4

Synthesis of cortistatins A, J, K and L was written by Flyer, Alec N.;Si, Chong;Myers, Andrew G.. And the article was included in Nature Chemistry in 2010.Product Details of 75476-83-4 The following contents are mentioned in the article:

The cortistatins are a recently identified class of marine natural products characterized by an unusual steroidal skeleton, which have been found to inhibit differentially the proliferation of various mammalian cells in culture by an unknown mechanism. We describe a comprehensive route for the synthesis of cortistatins from a common precursor, azide I, which in turn is assembled from two fragments of similar structural complexity. Cortistatins A and J, and for the first time K and L, have been synthesized in parallel processes from like intermediates prepared from a single compound With the identification of facile laboratory transformations linking intermediates in the cortistatin L synthetic series with corresponding intermediates to cortistatins A and J, we have been led to speculate that somewhat related paths might occur in nature, offering potential sequencing and chem. detail for cortistatin biosynthetic pathways. The antiproliferative activity of the cortistatins was tested against HUVECs. This study involved multiple reactions and reactants, such as 7-Iodoisoquinoline (cas: 75476-83-4Product Details of 75476-83-4).

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem