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6-CHLORO-4-(METHYLAMINO)NICOTINALDEHYDE is a chemical compound with the molecular formula C7H7ClN2O, belonging to the class of nicotinaldehyde derivatives. It features a chlorine atom and a methylamino group attached to the 6th and 4th carbon atoms, respectively. 6-CHLORO-4-(METHYLAMINO)NICOTINALDEHYDE is recognized for its potential as a building block in organic chemistry and has been studied for its biological and pharmacological properties, making it a valuable component in the development of new drugs and drug formulations.

449811-29-4

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449811-29-4 Usage

Uses

Used in Pharmaceutical Industry:
6-CHLORO-4-(METHYLAMINO)NICOTINALDEHYDE is used as a key intermediate in the synthesis of various pharmaceuticals for its potential to contribute to the development of new drugs and drug formulations. Its unique structure allows for the creation of molecules with specific therapeutic properties, enhancing the range of treatments available for various medical conditions.
Used in Agrochemical Industry:
In the agrochemical sector, 6-CHLORO-4-(METHYLAMINO)NICOTINALDEHYDE is utilized as a precursor in the production of agrochemicals. Its chemical properties make it suitable for the synthesis of compounds with pesticidal or herbicidal activities, contributing to the development of effective solutions for crop protection and management.
Used in Organic Chemistry Research:
6-CHLORO-4-(METHYLAMINO)NICOTINALDEHYDE serves as a valuable research tool in organic chemistry, where it is employed to study the synthesis and reactions of complex organic molecules. Its unique structural features provide opportunities for exploring novel chemical pathways and mechanisms, furthering the understanding of organic reactions and their applications in various fields.

Check Digit Verification of cas no

The CAS Registry Mumber 449811-29-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,9,8,1 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 449811-29:
(8*4)+(7*4)+(6*9)+(5*8)+(4*1)+(3*1)+(2*2)+(1*9)=174
174 % 10 = 4
So 449811-29-4 is a valid CAS Registry Number.
InChI:InChI=1/C7H7ClN2O/c1-9-6-2-7(8)10-3-5(6)4-11/h2-4H,1H3,(H,9,10)

449811-29-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 6-Chloro-4-(methylamino)pyridine-3-carbaldehyde

1.2 Other means of identification

Product number -
Other names 6-chloro-4-(methylamino)nicotinaldehyde

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:449811-29-4 SDS

449811-29-4Synthetic route

(6-chloro-4-(methylamino)pyridin-3-yl)methanol
449811-30-7

(6-chloro-4-(methylamino)pyridin-3-yl)methanol

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

Conditions
ConditionsYield
With manganese(IV) oxide In dichloromethane at 20℃; Inert atmosphere;93%
With manganese(IV) oxide In dichloromethane at 20℃; Inert atmosphere;93%
With manganese(IV) oxide In dichloromethane at 30℃; for 6h;87%
2,4-dichloro-5-pyridinecarboxaldehyde
1060811-62-2

2,4-dichloro-5-pyridinecarboxaldehyde

methylamine
74-89-5

methylamine

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

Conditions
ConditionsYield
In tetrahydrofuran at 45℃; for 48h;93%
ethyl 6-chloro-4-(methylamino)pyridine-3-carboxylate
449811-28-3

ethyl 6-chloro-4-(methylamino)pyridine-3-carboxylate

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

Conditions
ConditionsYield
Stage #1: ethyl 6-chloro-4-(methylamino)pyridine-3-carboxylate With lithium aluminium tetrahydride In tetrahydrofuran at -78℃; for 3h;
Stage #2: With manganese(IV) oxide In dichloromethane at 20℃; for 2h;
84%
Multi-step reaction with 2 steps
1.1: lithium aluminium tetrahydride / tetrahydrofuran / -78 °C
1.2: 20 °C
2.1: manganese(IV) oxide / dichloromethane / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: lithium aluminium tetrahydride / tetrahydrofuran / 0.33 h / 0 °C / Inert atmosphere
2: manganese(IV) oxide / dichloromethane / 6 h / 30 °C
View Scheme
4,6-dihydroxynicotinic acid ethyl ester
6975-44-6

4,6-dihydroxynicotinic acid ethyl ester

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: trichlorophosphate / 3 h / 110 °C
2.1: acetonitrile; water / 3.5 h / 0 - 20 °C
3.1: lithium aluminium tetrahydride / tetrahydrofuran / -78 °C
3.2: 20 °C
4.1: manganese(IV) oxide / dichloromethane / 20 °C
View Scheme
Multi-step reaction with 4 steps
1: trichlorophosphate / 2 h / Reflux
2: water; acetonitrile / 8 h / 0 - 20 °C
3: lithium aluminium tetrahydride / tetrahydrofuran / 0.33 h / 0 °C / Inert atmosphere
4: manganese(IV) oxide / dichloromethane / 6 h / 30 °C
View Scheme
Multi-step reaction with 4 steps
1: trichlorophosphate / 2 h / Reflux
2: water; acetonitrile / 8 h / 0 - 20 °C
3: lithium aluminium tetrahydride / tetrahydrofuran / 0.33 h / 0 °C / Inert atmosphere
4: manganese(IV) oxide / dichloromethane / 6 h / 30 °C
View Scheme
diethyl 1,3-acetonedicarboxylate
105-50-0

diethyl 1,3-acetonedicarboxylate

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: acetic anhydride / 1.5 h / 120 °C
1.2: 0 °C / Cooling
1.3: pH < 5
2.1: trichlorophosphate / 3 h / 110 °C
3.1: acetonitrile; water / 3.5 h / 0 - 20 °C
4.1: lithium aluminium tetrahydride / tetrahydrofuran / -78 °C
4.2: 20 °C
5.1: manganese(IV) oxide / dichloromethane / 20 °C
View Scheme
Multi-step reaction with 5 steps
1.1: orthoformic acid triethyl ester / 2 h / 120 °C
1.2: 0 - 20 °C
2.1: trichlorophosphate / 2 h / Reflux
3.1: water; acetonitrile / 8 h / 0 - 20 °C
4.1: lithium aluminium tetrahydride / tetrahydrofuran / 0.33 h / 0 °C / Inert atmosphere
5.1: manganese(IV) oxide / dichloromethane / 6 h / 30 °C
View Scheme
Multi-step reaction with 5 steps
1: 2 h / 120 °C
2: trichlorophosphate / 2 h / Reflux
3: water; acetonitrile / 8 h / 0 - 20 °C
4: lithium aluminium tetrahydride / tetrahydrofuran / 0.33 h / 0 °C / Inert atmosphere
5: manganese(IV) oxide / dichloromethane / 6 h / 30 °C
View Scheme
ethyl 4,6-dichloronicotinate
40296-46-6

ethyl 4,6-dichloronicotinate

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: acetonitrile; water / 3.5 h / 0 - 20 °C
2.1: lithium aluminium tetrahydride / tetrahydrofuran / -78 °C
2.2: 20 °C
3.1: manganese(IV) oxide / dichloromethane / 20 °C
View Scheme
Multi-step reaction with 3 steps
1: water; acetonitrile / 8 h / 0 - 20 °C
2: lithium aluminium tetrahydride / tetrahydrofuran / 0.33 h / 0 °C / Inert atmosphere
3: manganese(IV) oxide / dichloromethane / 6 h / 30 °C
View Scheme
Multi-step reaction with 3 steps
1: water; acetonitrile / 8 h / 0 - 20 °C
2: lithium aluminium tetrahydride / tetrahydrofuran / 0.33 h / 0 °C / Inert atmosphere
3: manganese(IV) oxide / dichloromethane / 6 h / 30 °C
View Scheme
2,4-dichloro-5-hydroxymethylpyridine
73998-95-5

2,4-dichloro-5-hydroxymethylpyridine

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: manganese(IV) oxide / chloroform / 12 h / 75 °C
2: tetrahydrofuran / 48 h / 45 °C
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

4-fluoro-2-methyl-5-nitroaniline
446-18-4

4-fluoro-2-methyl-5-nitroaniline

2-chloro-5-((4-fluoro-2-methyl-5-nitrophenylamino)methyl)-N-methylpyridin-4-amine
1011464-19-9

2-chloro-5-((4-fluoro-2-methyl-5-nitrophenylamino)methyl)-N-methylpyridin-4-amine

Conditions
ConditionsYield
With sodium tris(acetoxy)borohydride In acetic acid at 20℃;100%
cycl-isopropylidene malonate
2033-24-1

cycl-isopropylidene malonate

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

7-chloro-1-methyl-2-oxo-1,2-dihydro-1,6-naphthyridine-3-carboxylic acid
1609102-12-6

7-chloro-1-methyl-2-oxo-1,2-dihydro-1,6-naphthyridine-3-carboxylic acid

Conditions
ConditionsYield
With piperidine; acetic acid In ethanol at 20℃; for 2.33333h; Reflux;99%
With piperidine; acetic acid at 20℃; for 2.33333h; Reflux;99%
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

GlyOEt*HCl
459-73-4

GlyOEt*HCl

3-amino-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one

3-amino-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 90℃; for 5h;92%
ethyl 2-(5-amino-2-chlorophenyl)acetate
409082-02-6

ethyl 2-(5-amino-2-chlorophenyl)acetate

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

3-(5-amino-2-chlorophenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one
1012879-38-7

3-(5-amino-2-chlorophenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
With caesium carbonate In N,N-dimethyl-formamide at 80℃; for 4h;83%
With caesium carbonate In N,N-dimethyl-formamide at 80℃; for 4h;83%
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

methyl (2-chlorophenyl)acetate
57486-68-7

methyl (2-chlorophenyl)acetate

7-chloro-3-(2-chlorophenyl)-1-methyl-1,6-naphthyridin-2(1H)-one

7-chloro-3-(2-chlorophenyl)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
With aluminum oxide; potassium fluoride In N,N-dimethyl acetamide at 20℃; for 2h; Inert atmosphere;75%
With aluminum oxide; potassium fluoride In N,N-dimethyl acetamide at 20℃; for 2h; Inert atmosphere;75%
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

ethyl 2-(5-amino-4-fluoro-2-methylphenyl)acetate
1012880-05-5

ethyl 2-(5-amino-4-fluoro-2-methylphenyl)acetate

3-(5-amino-4-fluoro-2-methylphenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one
1012878-63-5

3-(5-amino-4-fluoro-2-methylphenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
With aluminum oxide; potassium fluoride In N,N-dimethyl acetamide at 20℃; for 2h;69%
With 40% potassium fluoride/alumina In N,N-dimethyl acetamide at 20℃; for 2h;69%
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

ethyl 2-(5-amino-2,4-difluorophenyl)acetate
1012880-07-7

ethyl 2-(5-amino-2,4-difluorophenyl)acetate

3-(5-amino-2,4-difluorophenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one
1012878-86-2

3-(5-amino-2,4-difluorophenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
With aluminum oxide; potassium fluoride In N,N-dimethyl acetamide for 0.166667h;68%
With 40% potassium fluoride/alumina In N,N-dimethyl acetamide for 0.166667h;68%
2,6-difluoro-3,5-dimethoxybenzeneamine
651734-54-2

2,6-difluoro-3,5-dimethoxybenzeneamine

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

2-chloro-5-{[(2,6-difluoro-3,5-dimethoxyphenyl)amino]methyl}-N-methylpyridin-4-amine

2-chloro-5-{[(2,6-difluoro-3,5-dimethoxyphenyl)amino]methyl}-N-methylpyridin-4-amine

Conditions
ConditionsYield
Stage #1: 2,6-difluoro-3,5-dimethoxybenzeneamine With sodium tris(acetoxy)borohydride; trifluoroacetic acid at 0℃; for 0.0333333h;
Stage #2: 6-chloro-4-(methylamino)pyridine-3-carbaldehyde In dichloromethane at 20℃;
68%
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

ethyl 2-(5-amino-2-bromo-4-fluorophenyl)acetate
1442471-26-2

ethyl 2-(5-amino-2-bromo-4-fluorophenyl)acetate

3-(5-amino-2-bromo-4-fluoro-phenyl)-7-chloro-1-methyl-1H-[1,6]naphthyridin-2-one
1442470-77-0

3-(5-amino-2-bromo-4-fluoro-phenyl)-7-chloro-1-methyl-1H-[1,6]naphthyridin-2-one

Conditions
ConditionsYield
With aluminum oxide; potassium fluoride In N,N-dimethyl acetamide at 20℃; for 0.166667h;67%
With potassium fluoride on basic alumina In N,N-dimethyl acetamide at 20℃; for 0.166667h;67%
methyl 3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]benzeneacetate

methyl 3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]benzeneacetate

6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

7-chloro-3-(3-hydroxyphenyl)-1-methyl-1,6-naphthyridin-2(1H)-one

7-chloro-3-(3-hydroxyphenyl)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
With aluminum oxide; potassium fluoride In N,N-dimethyl acetamide at 20℃; for 2h;67%
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

ethyl 2-(5-amino-2-chloro-4-fluorophenyl)acetate
1012880-10-2

ethyl 2-(5-amino-2-chloro-4-fluorophenyl)acetate

3-(5-amino-2-chloro-4-fluorophenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one
1012878-83-9

3-(5-amino-2-chloro-4-fluorophenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
With aluminum oxide; potassium fluoride In N,N-dimethyl acetamide at 20℃; for 1h;60%
With 40% potassium fluoride/alumina In N,N-dimethyl acetamide at 20℃; for 1h;60%
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

methyl 2-(5-amino-2-methylphenyl)acetate
850449-93-3

methyl 2-(5-amino-2-methylphenyl)acetate

3-(5-amino-2-methylphenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one
850451-77-3

3-(5-amino-2-methylphenyl)-7-chloro-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 100℃; for 16h;
With potassium carbonate In N,N-dimethyl-formamide at 100℃; for 16h;
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

methyl 3-((methoxycarbonyl)methyl)-4-methylbenzoate
1021535-35-2

methyl 3-((methoxycarbonyl)methyl)-4-methylbenzoate

C18H15ClN2O3
1021535-36-3

C18H15ClN2O3

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 100℃; for 16h;
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

methyl 2-(5-amino-2-methylphenyl)acetate
850449-93-3

methyl 2-(5-amino-2-methylphenyl)acetate

3-(4-amino-2-methyl-phenyl)-7-chloro-1-methyl-1H-[1,6]naphthyridin-2-one

3-(4-amino-2-methyl-phenyl)-7-chloro-1-methyl-1H-[1,6]naphthyridin-2-one

Conditions
ConditionsYield
With sodium carbonate In N,N-dimethyl-formamide at 100℃; for 16h;
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

ethyl (triphenylphosphoranylidene)acetate
1099-45-2

ethyl (triphenylphosphoranylidene)acetate

(E)-ethyl-3-(6-chloro-4-(methylamino)pyridin-3-yl)acrylate
1325215-16-4

(E)-ethyl-3-(6-chloro-4-(methylamino)pyridin-3-yl)acrylate

Conditions
ConditionsYield
In tetrahydrofuran for 16h; Reflux;
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one
1325215-17-5

7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: tetrahydrofuran / 16 h / Reflux
2: 1-methyl-pyrrolidin-2-one; water / 0.58 h / 150 °C / Microwave irradiation
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

3-bromo-7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one
1325215-18-6

3-bromo-7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: tetrahydrofuran / 16 h / Reflux
2: 1-methyl-pyrrolidin-2-one; water / 0.58 h / 150 °C / Microwave irradiation
3: pyridine; Phenylselenyl bromide / dichloromethane / 6 h / 39 °C
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

3-(tributylstannyl)-7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one
1325215-19-7

3-(tributylstannyl)-7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: tetrahydrofuran / 16 h / Reflux
2: 1-methyl-pyrrolidin-2-one; water / 0.58 h / 150 °C / Microwave irradiation
3: pyridine; Phenylselenyl bromide / dichloromethane / 6 h / 39 °C
4: tetrakis(triphenylphosphine) palladium(0) / tetrahydrofuran / 48 h / 80 - 90 °C / Inert atmosphere; Sealed tube
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

3-(2-(N,N-bis-(t-butoxycarbonyl)amino)-3,5-difluoropyridin-4-yl)-7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one
1325215-20-0

3-(2-(N,N-bis-(t-butoxycarbonyl)amino)-3,5-difluoropyridin-4-yl)-7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: tetrahydrofuran / 16 h / Reflux
2: 1-methyl-pyrrolidin-2-one; water / 0.58 h / 150 °C / Microwave irradiation
3: pyridine; Phenylselenyl bromide / dichloromethane / 6 h / 39 °C
4: tetrakis(triphenylphosphine) palladium(0) / tetrahydrofuran / 48 h / 80 - 90 °C / Inert atmosphere; Sealed tube
5: copper(l) iodide; triphenyl-arsane / tris-(dibenzylideneacetone)dipalladium(0) / N,N-dimethyl-formamide / 48 h / 60 °C / Inert atmosphere; Sealed tube
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

3-(2-amino-3,5-difluoropyridin-4-yl)-7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one
1325215-21-1

3-(2-amino-3,5-difluoropyridin-4-yl)-7-(ethylamino)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: tetrahydrofuran / 16 h / Reflux
2: 1-methyl-pyrrolidin-2-one; water / 0.58 h / 150 °C / Microwave irradiation
3: pyridine; Phenylselenyl bromide / dichloromethane / 6 h / 39 °C
4: tetrakis(triphenylphosphine) palladium(0) / tetrahydrofuran / 48 h / 80 - 90 °C / Inert atmosphere; Sealed tube
5: copper(l) iodide; triphenyl-arsane / tris-(dibenzylideneacetone)dipalladium(0) / N,N-dimethyl-formamide / 48 h / 60 °C / Inert atmosphere; Sealed tube
6: trifluoroacetic acid / dichloromethane / 1 h / 20 °C
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

N-(4-(7-(ethylamino)-1-methyl-2-oxo-1,2-dihydro-1,6-naphthyridin-3-yl)-3,5-difluoropyridin-2-yl)propane-1-sulfonamide
1325215-00-6

N-(4-(7-(ethylamino)-1-methyl-2-oxo-1,2-dihydro-1,6-naphthyridin-3-yl)-3,5-difluoropyridin-2-yl)propane-1-sulfonamide

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: tetrahydrofuran / 16 h / Reflux
2: 1-methyl-pyrrolidin-2-one; water / 0.58 h / 150 °C / Microwave irradiation
3: pyridine; Phenylselenyl bromide / dichloromethane / 6 h / 39 °C
4: tetrakis(triphenylphosphine) palladium(0) / tetrahydrofuran / 48 h / 80 - 90 °C / Inert atmosphere; Sealed tube
5: copper(l) iodide; triphenyl-arsane / tris-(dibenzylideneacetone)dipalladium(0) / N,N-dimethyl-formamide / 48 h / 60 °C / Inert atmosphere; Sealed tube
6: trifluoroacetic acid / dichloromethane / 1 h / 20 °C
7: triethylamine / dichloromethane / 16 h / 0 - 20 °C
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

7-((4-methoxybenzyl)(methyl)amino)-3-(5-amino-2-chloro-4-fluorophenyl)-1-methyl-1,6-naphthyridin-2(1H)-one
1012878-84-0

7-((4-methoxybenzyl)(methyl)amino)-3-(5-amino-2-chloro-4-fluorophenyl)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium fluoride; aluminum oxide / N,N-dimethyl acetamide / 1 h / 20 °C
2: 3 h / 180 °C / Inert atmosphere
View Scheme
Multi-step reaction with 2 steps
1: 40% potassium fluoride/alumina / N,N-dimethyl acetamide / 1 h / 20 °C
2: 3-(5-amino-2-chloro-4-fluorophenyl)-1-ethyl-7-(2-methoxyethylamino)-1,6-naphthyridin-2(1H)-one / 3 h / 180 °C / Inert atmosphere
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

3-(5-amino-2-chloro-4-fluorophenyl)-1-methyl-7-(methylamino)-1,6-naphthyridin-2(1H)-one
1012878-85-1

3-(5-amino-2-chloro-4-fluorophenyl)-1-methyl-7-(methylamino)-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: potassium fluoride; aluminum oxide / N,N-dimethyl acetamide / 1 h / 20 °C
2: 3 h / 180 °C / Inert atmosphere
3: trifluoroacetic acid / dichloromethane / Reflux
View Scheme
Multi-step reaction with 3 steps
1: 40% potassium fluoride/alumina / N,N-dimethyl acetamide / 1 h / 20 °C
2: 3-(5-amino-2-chloro-4-fluorophenyl)-1-ethyl-7-(2-methoxyethylamino)-1,6-naphthyridin-2(1H)-one / 3 h / 180 °C / Inert atmosphere
3: trifluoroacetic acid / dichloromethane / Reflux
View Scheme
6-chloro-4-(methylamino)pyridine-3-carbaldehyde
449811-29-4

6-chloro-4-(methylamino)pyridine-3-carbaldehyde

7-((4-methoxybenzyl)(methyl)amino)-3-(5-amino-2-chlorophenyl)-1-methyl-1,6-naphthyridin-2(1H)-one
1012879-39-8

7-((4-methoxybenzyl)(methyl)amino)-3-(5-amino-2-chlorophenyl)-1-methyl-1,6-naphthyridin-2(1H)-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: caesium carbonate / N,N-dimethyl-formamide / 4 h / 80 °C
2: 1,8-diazabicyclo[5.4.0]undec-7-ene / 1-methyl-pyrrolidin-2-one / 4 h / 180 °C / Inert atmosphere
View Scheme
Multi-step reaction with 2 steps
1: caesium carbonate / N,N-dimethyl-formamide / 4 h / 80 °C
2: 1,8-diazabicyclo[5.4.0]undec-7-ene / 1-methyl-pyrrolidin-2-one / 180 °C / Inert atmosphere
View Scheme

449811-29-4Relevant articles and documents

PROTEIN KINASE INHIBITORS AND USES THEREOF FOR THE TREATMENT OF DISEASES AND CONDITIONS

-

, (2020/11/30)

Identified compounds demonstrate protein kinase inhibitory activity. More specifically, the compounds are demonstrated to inhibit receptor interacting kinase 2 (RIPK2) and/or Activin-like kinase 2 (ALK2) and/or receptor interacting kinase 3 (RIPK3). Compounds that are either dual RIPK2/ALK2 inhibitors or that preferentially inhibit RIPK2 or ALK2 or RIPK3 could provide therapeutic benefit. Compounds that function as RIPK3 inhibitors provide therapeutic benefit in the treatment of inflammatory and degenerative conditions.

3,4-dihydropyrido[4,3-d]pyrimidine derivative, and preparation method and use thereof

-

Paragraph 0069; 0072; 0090-0093, (2019/10/07)

The invention relates to a 3,4-dihydropyrido[4,3-d]pyrimidine derivative, and a preparation method and a use thereof. The compound is a compound represented by formula I, or a pharmaceutically acceptable salt or stereoisomer or tautomer thereof, and R to R are as defined in the description.

PYRIDO[2,3-D]PYRIMIDIN-7ONES AND RELATED COMPOUNDS AS INHIBITORS OF PROTEIN KINASES

-

, (2018/12/13)

Identified compounds demonstrate protein kinase inhibitory activity. More specifically, the compounds having the structures below (I) are demonstrated to inhibit receptor interacting kinase 2 (RIPK2) and/or Activin-like kinase 2 (ALK2). Compounds that are either dual RIPK2/ ALK2 inhibitors or that preferentially inhibit RIPK2 or ALK2 could provide therapeutic benefit.

Inhibitors of the fibroblast growth factor receptor

-

, (2017/08/01)

Described herein are inhibitors of FGFR-4, pharmaceutical compositions including such compounds, and methods of using such compounds and compositions to inhibit the activity of FGFR-4.

Novel 1,6-naphthyridin-2(1H)-ones as potential anticancer agents targeting Hsp90

Montoir, David,Barillé-Nion, Sophie,Tonnerre, Alain,Juin, Philippe,Duflos, Muriel,Bazin, Marc-Antoine

, p. 17 - 33 (2016/05/24)

Hsp90 is an ATP-dependent chaperone known to be overexpressed in many cancers. This way, Hsp90 is an important target for drug discovery. Novobiocin, an aminocoumarin antibiotic, was reported to inhibit Hsp90 targeting C-terminal domain, and showed anti-proliferative properties, leading to the development of new and more active compounds. Consequently, a new set of novobiocin analogs derived from 1,6-naphthyridin-2(1H)-one scaffold was designed, synthesized and evaluated against two breast cancer cell lines. Subsequently, cell cycle progression and apoptosis were conducted on best candidates, finally Western Blot analysis was performed to measure their ability to induce degradation of Hsp90 client proteins.

INHIBITORS OF THE FIBROBLAST GROWTH FACTOR RECEPTOR

-

, (2015/07/22)

Described herein are inhibitors of FGFR-4, pharmaceutical compositions including such compounds, and methods of using such compounds and compositions to inhibit the activity of FGFR-4.

INHIBITORS OF THE FIBROBLAST GROWTH FACTOR RECEPTOR

-

, (2014/02/15)

Described herein are inhibitors of FGFR, pharmaceutical compositions including such compounds, and methods of using such compounds and compositions to inhibit the activity of tyrosine kinases.

Differential functionalization of 1,6-naphthyridin-2(1H)-ones through sequential one-pot Suzuki-Miyaura cross-couplings

Montoir, David,Tonnerre, Alain,Duflos, Muriel,Bazin, Marc-Antoine

, p. 1487 - 1495 (2014/03/21)

A practical synthesis of 7-chloro-3-iodo-1-methyl-1,6-naphthyridin-2(1H)- one is described that starts from 2-chloro-4-(methylamino)nicotinaldehyde. The dihalo compound then undergoes sequential, site-selective Suzuki-Miyaura cross-coupling reactions to afford highly functionalized 1,6-naphthyridones in good yields. One-pot, sequential, site-selective Suzuki-Miyaura cross-coupling reactions of 7-chloro-3-iodo-1-methyl-1,6-naphthyridin-2(1H)-one afforded highly functionalized 1,6-naphthyridones in good yields. Copyright

BICYCLIC HETEROCYCLES AS FGFR INHIBITORS

-

, (2014/10/29)

The present invention relates to bicyclic heterocycles, and pharmaceutical compositions of the same, that are inhibitors of one or more FGFR enzymes and are useful in the treatment of FGFR-associated diseases such as cancer.

Differential Functionalization of 1,6-Naphthyridin-2(1H)-ones through Sequential One-Pot Suzuki-Miyaura Cross-Couplings

Montoir, David,Tonnerre, Alain,Duflos, Muriel,Bazin, Marc-Antoine

, p. 1487 - 1495 (2015/10/05)

A practical synthesis of 7-chloro-3-iodo-1-methyl-1,6-naphthyridin-2(1H)-one is described that starts from 2-chloro-4-(methylamino)nicotinaldehyde. The dihalo compound then undergoes sequential, site-selective Suzuki-Miyaura cross-coupling reactions to afford highly functionalized 1,6-naphthyridones in good yields.

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