Category: 491-30-5

Troester, Andreas et al. published their research in Journal of the American Chemical Society in 2016 | CAS: 491-30-5

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline is a catabolite of tryptophan, the basic structure of some antihypertensive drugs, such as the peripheral vasodilators prazosin and doxazosin. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Product Details of 491-30-5

Enantioselective Intermolecular [2 + 2] Photocycloaddition Reactions of 2(1H)-Quinolones Induced by Visible Light Irradiation was written by Troester, Andreas;Alonso, Rafael;Bauer, Andreas;Bach, Thorsten. And the article was included in Journal of the American Chemical Society in 2016.Product Details of 491-30-5 This article mentions the following:

In the presence of a chiral thioxanthone catalyst (10 mol %) the title compounds underwent a clean intermol. [2+2] photocycloaddition with electron-deficient olefins at λ = 419 nm. The reactions not only proceeded with excellent regio- and diastereoselectivity but also delivered the resp. cyclobutane products with significant enantiomeric excess (up to 95% ee). Key to the success of the reactions is a two-point hydrogen bonding between quinolone and catalyst enabling efficient energy transfer and high enantioface differentiation. Preliminary work indicated that solar irradiation can be used for this process and that the substrate scope can be further expanded to isoquinolones. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Product Details of 491-30-5).

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline is a catabolite of tryptophan, the basic structure of some antihypertensive drugs, such as the peripheral vasodilators prazosin and doxazosin. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Product Details of 491-30-5

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Annapureddy, Rajasekar Reddy et al. published their research in Journal of the American Chemical Society in 2020 | CAS: 491-30-5

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. The Pomeranz–Fritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Safety of 1-Hydroxyisoquinoline

A Chiral Phenanthroline Ligand with a Hydrogen-Bonding Site: Application to the Enantioselective Amination of Methylene Groups was written by Annapureddy, Rajasekar Reddy;Jandl, Christian;Bach, Thorsten. And the article was included in Journal of the American Chemical Society in 2020.Safety of 1-Hydroxyisoquinoline This article mentions the following:

A silver-catalyzed amination was reported that occurred at the aliphatic C3-substituent of various quinolones and pyridones. The C-H amination reaction proceeded with high site- and enantioselectivity (14 examples, 83-97% ee). The key to its success was the use of a chiral phenanthroline ligand that is attached via an ethynyl linker to the 8-position of octahydro-1H-4,7-methanoisoindol-1-one. AgPF6 (10 mol %) served as the silver source, PhI=NNs as the nitrene precursor and 1,10-phenanthroline as the co-ligand. The reaction outcome can be understood by assuming a nitrene C-H insertion within a hydrogen-bonded silver complex in which a single C-H bond was exposed to the catalytic reaction center. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Safety of 1-Hydroxyisoquinoline).

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. The Pomeranz–Fritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Safety of 1-Hydroxyisoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Mahato, Chandan K. et al. published their research in Journal of Organic Chemistry in 2021 | CAS: 491-30-5

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. The discovery of chloroquine, the most well-known drug containing this stent, has helped bring about decades of malaria control and treatment.Computed Properties of C9H7NO

Asymmetric 1,4-Michael Addition in Aqueous Medium Using Hydrophobic Chiral Organocatalysts was written by Mahato, Chandan K.;Mukherjee, Sayan;Kundu, Mrinalkanti;Vallapure, Virbhadra P.;Pramanik, Animesh. And the article was included in Journal of Organic Chemistry in 2021.Computed Properties of C9H7NO This article mentions the following:

Organic transformations exclusively in water as an environmentally friendly and safe medium have drawn significant interest in the recent years. Moreover, transition metal-free synthesis of enantiopure mols. in water will have a great deal of attention as the system will mimic the natural enzymic reactions. In this work, a new set of proline-derived hydrophobic organocatalysts have been synthesized and utilized for asym. Michael reactions in water as the sole reaction medium. Among the various catalysts screened, the catalyst 1 is indeed efficient for stereoselective 1,4-conjugated Michael additions (dr: >97:3, ee up to >99.9%) resulting in high chem. yields (up to 95%) in a very short reaction time (1 h) at room temperature This methodol. provides a robust, green, and convenient protocol and can thus be an important addition to the arsenal of the asym. Michael addition reaction. Upon successful implementation, the present strategy also led to the formation of an optically active octahydroindole, the key component found in many natural products. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Computed Properties of C9H7NO).

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. The discovery of chloroquine, the most well-known drug containing this stent, has helped bring about decades of malaria control and treatment.Computed Properties of C9H7NO

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Chuang, Ta-Hsien et al. published their research in Journal of Organic Chemistry in 2013 | CAS: 491-30-5

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. The discovery of chloroquine, the most well-known drug containing this stent, has helped bring about decades of malaria control and treatment.Formula: C9H7NO

Direct Conversion of 1-(2-Bromobenzoyl)isoquinolines to Dibenzo[de,g]quinolin-7-ones via Reductive Photocyclization was written by Chuang, Ta-Hsien;Li, Chien-Fu;Lee, Hong-Zin;Wen, Yu-Chia. And the article was included in Journal of Organic Chemistry in 2013.Formula: C9H7NO This article mentions the following:

A series of A/D-ring substituted dibenzo[de,g]quinolin-7-ones I (R1 – R4 = H, MeO; R2R3 = OCH2O; R5 = H, MeO, CF3; R4R5 = OCH2O) was produced from the corresponding isoquinolinones II and (2-bromophenyl)acetonitriles III in four steps. This represents a convenient approach toward the synthesis of tetracyclic alkaloids. A direct conversion of 1-(2-bromobenzoyl)isoquinolines IV to dibenzo[de,g]quinolin-7-ones I is the key step in the total synthesis. The yield of the reductive photocyclization depends on the position of the substituents at the isoquinolyl ring and the Ph group. The mechanism of the reductive photocyclization is also discussed. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Formula: C9H7NO).

1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline and isoquinoline skeletons are among the most attractive frameworks with a wide range of biological and pharmacological activities. The discovery of chloroquine, the most well-known drug containing this stent, has helped bring about decades of malaria control and treatment.Formula: C9H7NO

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

 

Analyzing the synthesis route of 491-30-5

491-30-5, The synthetic route of 491-30-5 has been constantly updated, and we look forward to future research findings.

491-30-5, 1-Hydroxyisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

In a 250ml three neck flask fitted with overhead stirrer and condenser which is also connected to a scrubber solution, 1-hydroxyisoquinoline (lO.g, 68.89mmol) and PBrs (53.38g, 124 mmol) were taken. The reaction mixture was gradually heated to 140C. At about 125C – 130C the solid melts and a deep read solution obtained which on further heating converts to yellowish solid at ~135C. The reaction mixture was heated at this temperature for lOmin then allowed to cool to room temperature. The pale yellow solid was crushed and added in portions into ice with stirring to obtain a pale yellow powder which was filtered and washed with water (150ml) and dried in an oven at 50C under vacuum. The crude solid was purified by recrystallisation from EtOAc/heptane (14. lg, 99.93% HPLC, 71.3% yield). 1H-NMR (600MHz, CDCI3, TMS): S= 8.47 (s, 1H), 8.32(d, 1H), 8.19 (m, 1H), 7.72(m, 1H).

491-30-5, The synthetic route of 491-30-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CAMBRIDGE DISPLAY TECHNOLOGY LIMITED; SUMITOMO CHEMICAL CO., LTD; ISLAM, Nazrul; OHUCHI, Kazuei; HUMPHRIES, Martin; (63 pag.)WO2017/103586; (2017); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

 

Brief introduction of 491-30-5

The synthetic route of 491-30-5 has been constantly updated, and we look forward to future research findings.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.491-30-5,1-Hydroxyisoquinoline,as a common compound, the synthetic route is as follows.

In a 50 ml. round-bottom flask, isocarbostyril (0.50 g, 3.4 mmol) and phosphorus pentabromide (2.7 g, 9.8 mmol) were heated at 140-145 C for 10 min. The solid melted and lightened in color. The liquid solidified, and the reaction was stirred for an additional 10 min. On completion, the reaction mixture was cooled to room temperature, and ice/H20 (10 ml.) was poured into the flask. The solid precipitate was collected by filtration, washed with H20 (2 x 50 ml_), and dried under vacuum to obtain 860 mg (89% yield) of (1) as a buff-colored solid., 491-30-5

The synthetic route of 491-30-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS; MOORE, Terry; LAZZARA, Phillip; DAVID, Brian; RICHARDSON, Benjamin; JAIN, Atul, D.; (87 pag.)WO2019/195348; (2019); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

 

Downstream synthetic route of 491-30-5

As the paragraph descriping shows that 491-30-5 is playing an increasingly important role.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.491-30-5,1-Hydroxyisoquinoline,as a common compound, the synthetic route is as follows.

Preparation of Intermediate A: A mixture of 2.90 g, 19.07mMol of isocarbostyril and 14.40 g, 33.68mMol of phosphorus pentabromide were allowed to melt together at 140 0C. The melt turned into a red liquid and after about 10 minutes the reaction mixture solidified and was cooled. The reaction mixture was crushed up and dumped into ice water. The resulting solid was filtered and air-dried, wt. 5.50 g, 96% yield, mp.=94-96. Rf=0.66 in 40% ethyl acetate in hexanes.

As the paragraph descriping shows that 491-30-5 is playing an increasingly important role.

Reference£º
Patent; BAYER HEALTHCARE AG; WO2007/118602; (2007); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

 

New learning discoveries about 491-30-5

As the paragraph descriping shows that 491-30-5 is playing an increasingly important role.

491-30-5, 1-Hydroxyisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 2.90 g, 19.07 mMol of isocarbostyril and 14.40 g, 33.68 mMol of phosphorus pentabromide were allowed to melt together at 140 C. The melt turned into a red liquid and after about 10 minutes the reaction mixture solidified and was cooled. The reaction mixture was crushed up and dumped into ice water. The resulting solid was filtered and air-dried. wt. 5.50 g, 96% yield, mp.=94-96. Rf=0.66 in 40% ethyl acetate in hexanes.

As the paragraph descriping shows that 491-30-5 is playing an increasingly important role.

Reference£º
Patent; Bayer Pharmaceuticals Corporation; US6689883; (2004); B1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

 

Some tips on 491-30-5

491-30-5 1-Hydroxyisoquinoline 10284, aisoquinoline compound, is more and more widely used in various.

491-30-5, 1-Hydroxyisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 2.90 g, 19.07mMol of isocarbostyril and 14.40 g, 33.68mMol of phosphorus pentabromide were allowed to melt together at 140 C. The melt turned into a red liquid and after about 10 minutes the reaction mixture solidified and was cooled. The reaction mixture was crushed up and dumped into ice water. The resulting solid was filtered and air-dried. wt. 5.50 g, 96% yield, mp.=94-96. Rf=0.66 in 40% ethyl acetate in hexanes.

491-30-5 1-Hydroxyisoquinoline 10284, aisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; BAYER CORPORATION; EP1228063; (2009); B1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem