Category: isoquinoline

Condensation of 2-cyclohexanone-1-carboxylic acid anilide with ethyl cyanoacetate and cyanoacetamide was written by Bogdanowicz-Szwed, Krystyna. And the article was included in Roczniki Chemii in 1974.Application of 52903-71-6 The following contents are mentioned in the article:

2-Phenylcarbamoylcyclohexanone (I) and NCCH2CO2Et (II) refluxed in C6H6 in the presence of pyridine and piperidine (III) yielded 62% cyclohexene IV (R = 1-piperidinyl), which treated with H2SO4 at room temperature gave 53% isoquinoline V, and at 100° gave 75% VI. Under similar conditions, 2-phenylcarbamoyl-1-(4-morpholinyl)cyclohex-1-ene and II refluxed in the presence of pyridine and morpholine yielded 90% IV (R = 4-morpholinyl), which was converted into V and VI as above. VI refluxed with 20% NaOH gave 46% VII. Condensation of I with NCCH2CONH2 (VIII) in the presence of pyridine and III yielded 42% V; the same reactants condensed in the presence of AcOH-AcONa gave 58% IV (R = NH2) and small amounts of V. IV (R = NH2) with H2SO4 at room temperature gave 74% IX, but refluxing with 20% HCl in aqueous EtOH gave 82% X. X was also prepared from 2-carbethoxycyclohexanone and VIII. X hydrolyzed with H2SO4 at 100° yielded 45% XI, also prepared in 54% yield from IX. Both IX and X with aqueous NH3 gave the NH4 salt of X. This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6Application of 52903-71-6).

1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6) 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.Application of 52903-71-6

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

The Dimeric Form of 1,3-Diaminoisoquinoline Derivative Rescued the Mis-splicing of Atp2a1 and Clcn1 Genes in Myotonic Dystrophy Type 1 Mouse Model was written by Matsumoto, Jun;Nakamori, Masayuki;Okamoto, Tatsumasa;Murata, Asako;Dohno, Chikara;Nakatani, Kazuhiko. And the article was included in Chemistry – A European Journal in 2020.Reference of 1215767-89-7 The following contents are mentioned in the article:

Expanded CUG repeat RNA in the dystrophia myotonia protein kinase (DMPK) gene causes myotonic dystrophy type 1 (DM1) and sequesters RNA processing proteins, such as the splicing factor muscleblind-like 1 protein (MBNL1). Sequestration of splicing factors results in the mis-splicing of some pre-mRNAs. Small mols. that rescue the mis-splicing in the DM1 cells have drawn attention as potential drugs to treat DM1. Herein we report a new mol. JM642 consisted of two 1,3-diaminoisoquinoline chromophores having an auxiliary aromatic unit at the C5 position. JM642 alternates the splicing pattern of the pre-mRNA of the Ldb3 gene in the DM1 cell model and Clcn1 and Atp2a1 genes in the DM1 mouse model. In vitro binding anal. by surface plasmon resonance (SPR) assay to the r(CUG) repeat and disruption of ribonuclear foci in the DM1 cell model suggested the binding of JM642 to the expanded r(CUG) repeat in vivo, eventually rescue the mis-splicing. This study involved multiple reactions and reactants, such as 5-Bromo-1,3-dichloroisoquinoline (cas: 1215767-89-7Reference of 1215767-89-7).

5-Bromo-1,3-dichloroisoquinoline (cas: 1215767-89-7) belongs to isoquinoline derivatives. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. Other industrial applications include their use as corrosion inhibitors, preservatives, and as solvents for resins and terpenes.Reference of 1215767-89-7

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Reaction of 4-cyano-1,3-dihydroxy-5,6,7,8-tetrahydroisoquinolines with Vilsmeier reagent: structure and mechanism of formation of [2,7]naphthyridines was written by Kasturi, Tirumalai R.;Arumugam, Subramaniam;Mathew, Lata;Jayaram, Srirangam K.;Dastidar, Parthasarathi;Guru Row, Tayur N.. And the article was included in Tetrahedron in 1992.Recommanded Product: 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile The following contents are mentioned in the article:

Reaction of 4-cyano-1,3-dihydroxy-5,6,7,8-tetrahydroisoquinoline (I, R = R¹ = H, n = 1) with Vilsmeier reagent gave the chloro aldehyde II, dichloro[2,7]naphthyridine III and monochloro[2,7]naphthyridine IV, identified by spectral data [Mass, ¹H & ¹³C NMR, NOE and HETERO COSY]. III was confirmed by x-ray crystal structure anal. Reaction of I (R = H, Me, Et, Me₃C; R₁ = H, Me; n = 0, 1, 2), similarly, gave the corresponding compounds The starting tetrahydroisoquinolines were synthesized by the reaction of the corresponding β-keto esters with cyanoacetamide. Reaction of IV with POCl₃ gave in almost quant. yield, the dichloro compound III. An acceptable mechanism has been proposed for the formation of the products. This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6Recommanded Product: 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile).

1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6) belongs to isoquinoline derivatives. Isoquinoline is a structural isomer of quinoline, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. Recommanded Product: 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Synthesis of isoquinolines from indenes was written by Miller, R. Bryan;Frincke, James M.. And the article was included in Journal of Organic Chemistry in 1980.Reference of 75476-83-4 The following contents are mentioned in the article:

A general procedure for the preparation of Me, di-Me, NO₂, Br, iodo, and di-MeO-substituted isoquinolines from the appropriately substituted indenes is described. Ozonolysis of the indenes followed by reductive workup gives intermediate homophthalaldehydes, which are treated with NH₄OH to give the isoquinolines. This “one-pot”, three-step reaction sequence was applied to the formation of all of the mono-C-methyl-substituted isoquinolines in a regiospecific manner. The procedure is applicable to both electron-withdrawing and electron-donating substituents on the indene system. In this manner the 6- and 7-nitro-, -bromo-, and -iodoisoquinolines were prepared This study involved multiple reactions and reactants, such as 7-Iodoisoquinoline (cas: 75476-83-4Reference of 75476-83-4).

7-Iodoisoquinoline (cas: 75476-83-4) 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. 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.Reference of 75476-83-4

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Regioselective Bromination of Fused Heterocyclic N-Oxides was written by Wengryniuk, Sarah E.;Weickgenannt, Andreas;Reiher, Christopher;Strotman, Neil A.;Chen, Ke;Eastgate, Martin D.;Baran, Phil S.. And the article was included in Organic Letters in 2013.SDS of cas: 1421517-86-3 The following contents are mentioned in the article:

A mild method for the regioselective C2-bromination of fused azine N-oxides is presented, employing tosic anhydride as the activator and tetra-n-butylammonium bromide as the nucleophilic bromide source. The C2-brominated compounds, e.g. I [X = H, 4-OMe, 6-OMe, etc.], are produced in moderate to excellent yields and with excellent regioselectivity in most cases. The potential extension of this method to other halogens, effecting C2-chlorination with Ts₂O/TBACl is also presented. Finally, this method could be incorporated into a viable one-pot oxidation/bromination process, using methyltrioxorhenium/urea hydropgen peroxide as the oxidant. This study involved multiple reactions and reactants, such as 1-Bromo-4-fluoroisoquinoline (cas: 1421517-86-3SDS of cas: 1421517-86-3).

1-Bromo-4-fluoroisoquinoline (cas: 1421517-86-3) 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.SDS of cas: 1421517-86-3

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Formation of ethoxyhydroquinazolinone by attack of an ester carbonyl oxygen at a cyano group of an enamine was written by Bischoff, Christian;Schroeder, Edith. And the article was included in Journal fuer Praktische Chemie (Leipzig) in 1985.Synthetic Route of C10H10N2O2 The following contents are mentioned in the article:

Et 2-oxocyclohexanecarboxylate was treated with H₂NCN to give 4-ethoxy-2,3,5,6,7,8-hexahydroquinazolin-2-one. Bu 2-oxocyclopentanecarboxylate and H₂NCN gave Bu 3-cyanaminocyclopent-1-enecarboxylate. 2-Oxocyclohexanecarboxamide reacted with EtO₂CCH₂CN and NaOH to give 4-cyanooctahydroisoquinoline-1,3-dione and with NH₄OAc to give the Et cyclohexylidenecyanoacetate I. I was treated with NH₃, H₂NNH₂, or cyclohexylamine to give the cyanohydroquinazolinedione salts II (R = H, NH₂, cyclohexyl). This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6Synthetic Route of C10H10N2O2).

1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Synthetic Route of C10H10N2O2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Improved synthesis of 1-chloro-6-methoxy-isoquinolin-3-ol and its derivatives was written by Zheng, Zhizhen Barbara;Wang, Alan Xiangdong;Scola, Paul;D’Andrea, Stanley. And the article was included in Synthetic Communications in 2009.COA of Formula: C10H8ClNO2 The following contents are mentioned in the article:

A convenient and efficient synthetic route to 1-chloro-6-methoxy-isoquinolin-3-ol and its derivatives was reported. This new method involved carboxylation of 4-methoxy-2-methylbenzonitrile, subsequent conversion of the resulting 2-cyano-5-methoxy-phenylacetic acid to its acid chloride, and acid-promoted cyclization of the 2-cyano-5-methoxy-phenyl-acetyl chloride. This procedure offers a better overall yield than the previously reported route and is also less hazardous and more reproducible. This study involved multiple reactions and reactants, such as 1-Chloro-6-methoxyisoquinolin-3(2H)-one (cas: 55086-31-2COA of Formula: C10H8ClNO2).

1-Chloro-6-methoxyisoquinolin-3(2H)-one (cas: 55086-31-2) 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. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.COA of Formula: C10H8ClNO2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Efficient and stereoselective installation of isoquinoline: formal total synthesis of cortistatin A was written by Yamashita, Shuji;Kitajima, Kazuki;Iso, Kentaro;Hirama, Masahiro. And the article was included in Tetrahedron Letters in 2009.Synthetic Route of C9H6IN The following contents are mentioned in the article:

The highly stereoselective attachment of isoquinoline onto the steroidal framework of cortistatin A (I) was achieved. The synthetic strategy featured a Ce-mediated nucleophilic addition of an isoquinoline unit to the sterically congested ketone followed by formation of the Ph thiocarbamate, and subsequent stereoselective radical reduction The new method resulted in a formal total synthesis of cortistatin A. This study involved multiple reactions and reactants, such as 7-Iodoisoquinoline (cas: 75476-83-4Synthetic Route of C9H6IN).

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. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Synthetic Route of C9H6IN

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Model experiments on the construction of the ABE ring system of hetisine-type diterpene alkaloids was written by Van der Baan, J. L.;Bickelhaupt, F.. And the article was included in Recueil des Travaux Chimiques des Pays-Bas in 1975.Recommanded Product: 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile The following contents are mentioned in the article:

The cyanopyridinediols I-III were C-alkylated to the unsaturated imides IV-VII. The allyl derivatives VI and VII underwent Cope rearrangement to VIII and IX, resp. IX was transformed to the bromohydrin X, which, after protection of the HO group, was cyclized by base to XI. Removal of the protecting group and oxidation afforded ketone XII, which contains the ABE ring system of hetisine diterpene alkaloids. This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6Recommanded Product: 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile).

1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. It protonates to form salts upon treatment with strong acids, such as HCl. It forms adducts with Lewis acids, such as BF3.Recommanded Product: 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Reaction of malononitrile with some β-dicarbonyl compounds was written by Ducker, John W.;Gunter, Maxwell J.. And the article was included in Australian Journal of Chemistry in 1975.Application In Synthesis of 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile The following contents are mentioned in the article:

The reaction of β-keto esters and amides with NCCH2CN, in the presence of alcohol, proceeded through cycanocarbon acid and iminopyran intermediates to give the pyridones I [RR1 = (CH2)3, (CH2)4; R = Me, R1 = H; R2 = OEt, OMe, NHPh, NEt2, Me]. With β-diketones, in benzene solution, a similar reaction is accompanied by the formation of lactams II and benzene derivatives III (n = 1,2). This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6Application In Synthesis of 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile).

1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6) 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. 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.Application In Synthesis of 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem