Category: 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).

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

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

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

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

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

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

Knoevenagel reaction of malononitrile with cyclic β-keto esters. II. Mechanism of formation of heterocyclic reaction products was written by Van der Baan, J. L.;Bickelhaupt, F.. And the article was included in Tetrahedron in 1974.Reference of 52903-71-6 The following contents are mentioned in the article:

The preparation of alkoxypyridinols I and II from the Knoevenagel reaction products III and IV, resp., proceeded by ester CO group-initiated ring closure by intra mol. nucleophilic attack on the cyano group. Cleavage of the O ring formed by basic catalyst on the former ester carbonyl C gave an amide which by conventional cyclization gave the alkoxypyridinols. This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6Reference 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. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Reference of 52903-71-6

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Nitrile-ketenimine tautomerism in substituted alkylidenemalonitriles and alkylidenecyanoacetates. Characteristic uv absorption band was written by Kasturi, T. R.;Sharma, V. K.;Srinivasan, A.;Subrahmanyam, G.. And the article was included in Tetrahedron in 1973.Electric Literature of C10H10N2O2 The following contents are mentioned in the article:

The uv spectra of several alkylidenemalononitriles and -cyanoacetates showed a band around 355 nm indicating the presence of ketenimine tautomers. The malononitriles added H2O and EtOH to give the corresponding pyridine derivatives This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6Electric Literature 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. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Electric Literature of C10H10N2O2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

The Vilsmeier reaction of non-aromatic compounds was written by Jones, Gurnos;Stanforth, Stephen P.. And the article was included in Organic Reactions (Hoboken, NJ, United States) in 2000.Electric Literature of C10H10N2O2 The following contents are mentioned in the article:

A review of the article The Vilsmeier reaction of non-aromatic compounds This study involved multiple reactions and reactants, such as 1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6Electric Literature of C10H10N2O2).

1-Hydroxy-3-oxo-2,3,5,6,7,8-hexahydroisoquinoline-4-carbonitrile (cas: 52903-71-6) belongs to isoquinoline derivatives. The isoquinoline structure occurs in a considerable number of alkaloids in widely separated plant families. They are also used to make oil-soluble dyes, food colorants, pharmaceuticals, pH indicators and other organic compounds. Electric Literature of C10H10N2O2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem