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2243-58-5

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2243-58-5 Usage

Chemical Properties

Pale yellow powder

Uses

2-Naphthylhydrazine Hydrochloride acts as a reagent in the synthesis and biological activity of some new pyrazoline and pyrimidine derivatives as antibacterial and antifungal agents. Synthesis and biological evaluation of 6-hydroxypyridazinone derivatives as σ1 receptor ligands for treating neuropathic pain.

Check Digit Verification of cas no

The CAS Registry Mumber 2243-58-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,4 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 2243-58:
(6*2)+(5*2)+(4*4)+(3*3)+(2*5)+(1*8)=65
65 % 10 = 5
So 2243-58-5 is a valid CAS Registry Number.
InChI:InChI=1/C10H10N2.ClH/c11-12-10-6-5-8-3-1-2-4-9(8)7-10;/h1-7,12H,11H2;1H

2243-58-5SDS

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 naphthalen-2-ylhydrazine,hydrochloride

1.2 Other means of identification

Product number -
Other names [2]Naphthyl-hydrazin,Hydrochlorid

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:2243-58-5 SDS

2243-58-5Synthetic route

2-bromonaphthalene
580-13-2

2-bromonaphthalene

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

Conditions
ConditionsYield
Stage #1: 2-bromonaphthalene With potassium phosphate; copper(l) iodide; N,N′-bis(2,6-dimethylphenyl)oxalamide; cetyltrimethylammonim bromide In water at 80℃; for 0.25h; Schlenk technique; Inert atmosphere; Sealed tube;
Stage #2: With hydrazine hydrate In water at 80℃; Inert atmosphere; Schlenk technique; Sealed tube;
Stage #3: With hydrogenchloride In water pH=3 - 4; Inert atmosphere; Schlenk technique; Sealed tube;
70%
Multi-step reaction with 2 steps
1.1: s-BuLi / tetrahydrofuran; cyclohexane / 0.5 h / -78 °C
1.2: tetrahydrofuran; cyclohexane / -78 - 20 °C
2.1: HCl / dioxane; propan-2-ol / 0.5 h / 60 °C
View Scheme
naphthalen-2-ylamine
91-59-8

naphthalen-2-ylamine

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

Conditions
ConditionsYield
Stage #1: naphthalen-2-ylamine With hydrogenchloride; sodium nitrite In water for 1h; Cooling with ice;
Stage #2: With tin(ll) chloride In water for 3.5h; Cooling with ice;
63%
With hydrogenchloride; tin(ll) chloride; sodium nitrite 1.) -5 deg C to 0 deg C, 0.75 h, 2.) 1 h; Multistep reaction;
Stage #1: naphthalen-2-ylamine With hydrogenchloride; sodium nitrite In water at 0℃; for 0.416667h;
Stage #2: With hydrogenchloride; tin(ll) chloride In water at 0℃; for 0.5h;
Stage #1: naphthalen-2-ylamine With hydrogenchloride; sodium nitrite In water at -5 - 0℃; for 0.5h;
Stage #2: With tin(ll) chloride In water at 0 - 20℃;
di-tert-butyl 1-(naphthalene-2-yl)hydrazine-1,2-dicarboxylate
868394-40-5

di-tert-butyl 1-(naphthalene-2-yl)hydrazine-1,2-dicarboxylate

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

Conditions
ConditionsYield
With hydrogenchloride In 1,4-dioxane; isopropyl alcohol at 60℃; for 0.5h;
β-naphthol
135-19-3

β-naphthol

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

Conditions
ConditionsYield
With hydrazine hydrate for 20h; Reflux;296.5 g
2-(2,4-dimethyl-1,3-dioxolan-2-yl)acetic acid
1356907-02-2

2-(2,4-dimethyl-1,3-dioxolan-2-yl)acetic acid

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

5-methyl-1-(naphthalen-2-yl)-1H-pyrazol-3-ol
1192140-15-0

5-methyl-1-(naphthalen-2-yl)-1H-pyrazol-3-ol

Conditions
ConditionsYield
Stage #1: 2-(2,4-dimethyl-1,3-dioxolan-2-yl)acetic acid With chloroformic acid ethyl ester; triethylamine In dichloromethane at 0℃; for 0.333333h;
Stage #2: 2-naphthylhydrazine hydrochloride With triethylamine In dichloromethane at 20℃; for 3h; Product distribution / selectivity;
97%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

cis-crotonin

cis-crotonin

C29H29NO3

C29H29NO3

Conditions
ConditionsYield
With acetic acid In ethanol for 1h; Reflux;96%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

S-methyl-S-phenylsulfoximine
4381-25-3

S-methyl-S-phenylsulfoximine

N-(2-naphthyl)-S-methyl-S-phenylsulfoximine

N-(2-naphthyl)-S-methyl-S-phenylsulfoximine

Conditions
ConditionsYield
With oxygen; potassium acetate; copper(I) bromide In acetone at 20℃; for 12h; Schlenk technique;88%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

potassium phenyltrifluoborate

potassium phenyltrifluoborate

2-phenylnaphthalene
612-94-2

2-phenylnaphthalene

Conditions
ConditionsYield
With diamminedichloropalladium(II); copper(II) choride dihydrate; potassium carbonate In water at 25℃; for 12h; Suzuki Coupling; Green chemistry;87%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

butanone
78-93-3

butanone

2,3-dimethylbenz<4,5>indole
55970-05-3

2,3-dimethylbenz<4,5>indole

Conditions
ConditionsYield
With 4-methylbenzenesulfonic acid-based ionic liquid supported on silica gel In ethanol at 20℃; for 5h; Fischer Indole Synthesis;86%
With acetic acid at 100℃; for 3h; Fischer Indole Synthesis; Inert atmosphere;
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

3,4-dihydronaphthalene-1(2H)-one
529-34-0

3,4-dihydronaphthalene-1(2H)-one

C20H15N

C20H15N

Conditions
ConditionsYield
With acetic acid In ethanol for 3h; Heating;85%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

1,2,3,4-tetrahydronaphthalen-2-one
530-93-8

1,2,3,4-tetrahydronaphthalen-2-one

C20H17N

C20H17N

Conditions
ConditionsYield
With acetic acid In ethanol for 3h;85%
morpholine
110-91-8

morpholine

carbon monoxide
201230-82-2

carbon monoxide

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

morpholino(naphthalen-2-yl)methanone
26162-88-9

morpholino(naphthalen-2-yl)methanone

Conditions
ConditionsYield
With oxygen; palladium diacetate; sodium carbonate; triphenylphosphine In 1,4-dioxane; dimethylsulfoxide-d6; carbon dioxide at 100℃; for 12h; Schlenk technique; liquid CO2;83%
With oxygen; palladium diacetate; sodium carbonate; triphenylphosphine In 1,4-dioxane; dimethyl sulfoxide at 100℃; under 760.051 Torr; for 12h; Schlenk technique; Green chemistry;83%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

benzyl chloroformate
501-53-1

benzyl chloroformate

C18H16N2O2

C18H16N2O2

Conditions
ConditionsYield
With pyridine In acetonitrile at 0 - 20℃; for 1.25h;81%
With pyridine In acetonitrile
4-Methoxybenzenethiol
696-63-9

4-Methoxybenzenethiol

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

(4-methoxyphenyl)(naphthalen-2-yl)sulfane
51739-39-0

(4-methoxyphenyl)(naphthalen-2-yl)sulfane

Conditions
ConditionsYield
With oxygen; palladium diacetate; sodium carbonate; tricyclohexylphosphine In toluene at 100℃; for 12h; Schlenk technique;80%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

acetic anhydride
108-24-7

acetic anhydride

N′-(naphthalen-2-yl)acetohydrazide
40880-56-6

N′-(naphthalen-2-yl)acetohydrazide

Conditions
ConditionsYield
Stage #1: 2-naphthylhydrazine hydrochloride With potassium carbonate In water at 20℃; for 0.25h;
Stage #2: acetic anhydride In ethyl acetate; toluene at 20℃; for 1h;
79%
With sodium hydroxide In tetrahydrofuran for 1h; Inert atmosphere; Schlenk technique;61%
benzenesulfonamide
98-10-2

benzenesulfonamide

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

N-(naphthalen-2-yl)benzenesulfonamide
7504-85-0

N-(naphthalen-2-yl)benzenesulfonamide

Conditions
ConditionsYield
With tert.-butylhydroperoxide; copper acetylacetonate; caesium carbonate In water; acetonitrile at 100℃; for 12h; Schlenk technique;79%
2-acetyldimedone
1755-15-3

2-acetyldimedone

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

3,6,6-trimethyl-1-(naphthalen-2-yl)-6,7-dihydro-1H-indazol-4(5H)-one

3,6,6-trimethyl-1-(naphthalen-2-yl)-6,7-dihydro-1H-indazol-4(5H)-one

Conditions
ConditionsYield
With pyridine In ethanol at 80℃; for 2h;79%
maleic anhydride
108-31-6

maleic anhydride

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

6-hydroxy-2-(naphthalen-2-yl)pyridazin-3(2H)-one
67945-32-8

6-hydroxy-2-(naphthalen-2-yl)pyridazin-3(2H)-one

Conditions
ConditionsYield
With hydrogenchloride In water Reflux;78.1%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

isopropyl chloroformate
108-23-6

isopropyl chloroformate

C14H16N2O2

C14H16N2O2

Conditions
ConditionsYield
With pyridine In acetonitrile at 0 - 20℃; for 1.25h;78%
With pyridine In acetonitrile
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

3-(anthracen-9-yl)-1-p-tolylprop-2-en-1-one

3-(anthracen-9-yl)-1-p-tolylprop-2-en-1-one

5-(anthracen-9-yl)-1-(naphthalene-2-yl)-3-p-tolyl-4,5-dihydro-1H-pyrazole
1337561-41-7

5-(anthracen-9-yl)-1-(naphthalene-2-yl)-3-p-tolyl-4,5-dihydro-1H-pyrazole

Conditions
ConditionsYield
In ethanol for 4h; Reflux;77%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

C19H30O4

C19H30O4

C27H31NO2

C27H31NO2

Conditions
ConditionsYield
Stage #1: C19H30O4 With hydrogenchloride In methanol for 1h; Reflux;
Stage #2: 2-naphthylhydrazine hydrochloride With acetic acid In ethanol for 1h; Reflux;
77%
carbon monoxide
201230-82-2

carbon monoxide

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

phenol
108-95-2

phenol

phenyl naphthalene-2-carboxylate
82408-29-5

phenyl naphthalene-2-carboxylate

Conditions
ConditionsYield
With bis(diphenylphosphino)propanepalladium(II) dichloride; oxygen; sodium hydroxide at 100℃; under 760.051 Torr; for 12h; Schlenk technique; Molecular sieve; Green chemistry;76%
3,3-dimethylindan-1-one
26465-81-6

3,3-dimethylindan-1-one

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

C21H17N

C21H17N

Conditions
ConditionsYield
With hydrogenchloride; acetic acid In water for 12h; Reflux;72%
carbon monoxide
201230-82-2

carbon monoxide

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

phenylacetylene
536-74-3

phenylacetylene

1,5-di(naphthalen-2-yl)-3-phenyl-1H-pyrazole

1,5-di(naphthalen-2-yl)-3-phenyl-1H-pyrazole

Conditions
ConditionsYield
With oxygen; palladium diacetate; triethylamine; triphenylphosphine In N,N-dimethyl-formamide at 100℃; for 8h; Molecular sieve; Schlenk technique; regioselective reaction;71%
toluene-4-sulfonic acid phenyl ester
640-60-8

toluene-4-sulfonic acid phenyl ester

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

1-(2-naphthalenyl)-1-phenylhydrazine
83890-91-9

1-(2-naphthalenyl)-1-phenylhydrazine

Conditions
ConditionsYield
Stage #1: toluene-4-sulfonic acid phenyl ester With potassium phosphate; palladium(II) trifluoroacetate; 2-(2-(dicyclohexylphosphino)-4,5-dimethoxyphenyl)-1-methyl-1H-indole; phenylboronic acid In N,N-dimethyl-formamide at 20℃; for 0.00833333h; Schlenk technique; Inert atmosphere; Sealed tube;
Stage #2: 2-naphthylhydrazine hydrochloride In N,N-dimethyl-formamide at 100℃; for 24h; Schlenk technique; Inert atmosphere; Sealed tube;
71%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

ethyl 2,4-diketopentanoate
615-79-2

ethyl 2,4-diketopentanoate

A

ethyl 5-methyl-1-(naphthalen-2-yl)-1H-pyrazole-3-carboxylate
330803-41-3

ethyl 5-methyl-1-(naphthalen-2-yl)-1H-pyrazole-3-carboxylate

B

ethyl 3-methyl-1-(2-naphthyl)-1H-pyrazole-5-carboxylate
330803-40-2

ethyl 3-methyl-1-(2-naphthyl)-1H-pyrazole-5-carboxylate

Conditions
ConditionsYield
Stage #1: 2-naphthylhydrazine hydrochloride; ethyl 2,4-diketopentanoate With acetic acid for 1h; Reflux;
Stage #2: With sodium hydroxide In dichloromethane
A 66%
B 7%
3-Aminocrotononitrile
1118-61-2

3-Aminocrotononitrile

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

3-methyl-1-(2-naphthyl)-1H-pyrazol-5-amine
92166-17-1

3-methyl-1-(2-naphthyl)-1H-pyrazol-5-amine

Conditions
ConditionsYield
Stage #1: 3-Aminocrotononitrile; 2-naphthylhydrazine hydrochloride With hydrogenchloride In water at 150℃; for 0.166667h; Microwave irradiation; Sealed tube; Green chemistry;
Stage #2: With sodium hydroxide In water for 0.0833333h; Sonication; Green chemistry;
66%
acetylferrocene
1271-55-2

acetylferrocene

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

N,N-dimethyl-formamide
68-12-2, 33513-42-7

N,N-dimethyl-formamide

3-ferrocenyl-1-(2-naphthyl)pyrazole-4-carbaldehyde
1259930-40-9

3-ferrocenyl-1-(2-naphthyl)pyrazole-4-carbaldehyde

Conditions
ConditionsYield
With sodium methoxide; POCl3; Na2CO3 In ethanol MeONa was added to soln. acetylferrocene and β-naphthylhydrazine*HCl in EtOH, refluxed for 1 h, cooled to r.t., ppt. was filtered off, washed with EtOH, dried over CaCl2 for 1 h, dissolved in DMF, POCl3 was added under Ar, stirred at r.t. for 18 h; react. mixt. was poured onto ice with water, ppt. was filtered off, washed with water and dried over Na2SO4, column chromy. on silica (benzene);elem. anal.;65%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

methyl N-cyano-2-naphthimidate

methyl N-cyano-2-naphthimidate

1,3-di(naphthalen-2-yl)-1H-1,2,4-triazol-5-amine

1,3-di(naphthalen-2-yl)-1H-1,2,4-triazol-5-amine

Conditions
ConditionsYield
Stage #1: 2-naphthylhydrazine hydrochloride With triethylamine In methanol at 20℃; for 0.5h; Inert atmosphere;
Stage #2: methyl N-cyano-2-naphthimidate In methanol for 4h; Reflux; Inert atmosphere;
65%
naltrexone Hydrochloride
16676-29-2

naltrexone Hydrochloride

2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

17-(cyclopropylmethyl)-6,7-dehydro-4,5α-epoxy-3,14-dihydroxy-5',6'-benz-6,7-2',3'-indolomorphinan
126642-60-2

17-(cyclopropylmethyl)-6,7-dehydro-4,5α-epoxy-3,14-dihydroxy-5',6'-benz-6,7-2',3'-indolomorphinan

Conditions
ConditionsYield
With acetic acid for 4h; Heating;60%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

benzoic acid
65-85-0

benzoic acid

N’-(naphthalen-2-yl)benzohydrazide
93323-38-7

N’-(naphthalen-2-yl)benzohydrazide

Conditions
ConditionsYield
With 6-chloro-3-((dimethylamino)(dimethyliminio)methyl)-1H-benzo[d][1,2,3]triazol-3-ium-1-olatehexafluorophosphate(V); triethylamine In N,N-dimethyl-formamide at 20℃;60%
2-naphthylhydrazine hydrochloride
2243-58-5

2-naphthylhydrazine hydrochloride

ethyl 3-(3,5-dichlorophenyl)-3-oxopropanoate
172168-01-3

ethyl 3-(3,5-dichlorophenyl)-3-oxopropanoate

5-(3,5-dichlorophenyl)-2-(2-naphthyl)-2,4-dihydro-3H-pyrazol-3-one
907190-28-7

5-(3,5-dichlorophenyl)-2-(2-naphthyl)-2,4-dihydro-3H-pyrazol-3-one

Conditions
ConditionsYield
Stage #1: 2-naphthylhydrazine hydrochloride; ethyl 3-(3,5-dichlorophenyl)-3-oxopropanoate In acetic acid Heating / reflux;
Stage #2: With sodium hydroxide In water; acetic acid at 20℃; pH=6;
54%

2243-58-5Relevant articles and documents

Discovery of Pyrazolocarboxamides as Potent and Selective Receptor Interacting Protein 2 (RIP2) Kinase Inhibitors

Haffner, Curt D.,Charnley, Adam K.,Aquino, Christopher J.,Casillas, Linda,Convery, Máire A.,Cox, Julie A.,Elban, Mark A.,Goodwin, Nicole C.,Gough, Peter J.,Haile, Pamela A.,Hughes, Terry V.,Knapp-Reed, Beth,Kreatsoulas, Constantine,Lakdawala, Ami S.,Li, Huijie,Lian, Yiqian,Lipshutz, David,Mehlmann, John F.,Ouellette, Michael,Romano, Joseph,Shewchuk, Lisa,Shu, Arthur,Votta, Bartholomew J.,Zhou, Huiqiang,Bertin, John,Marquis, Robert W.

supporting information, p. 1518 - 1523 (2019/10/19)

Herein we report the discovery of pyrazolocarboxamides as novel, potent, and kinase selective inhibitors of receptor interacting protein 2 kinase (RIP2). Fragment based screening and design principles led to the identification of the inhibitor series, and X-ray crystallography was used to inform key structural changes. Through key substitutions about the N1 and C5 N positions on the pyrazole ring significant kinase selectivity and potency were achieved. Bridged bicyclic pyrazolocarboxamide 11 represents a selective and potent inhibitor of RIP2 and will allow for a more detailed investigation of RIP2 inhibition as a therapeutic target for autoinflammatory disorders.

Synthesis of Aryl Hydrazines via CuI/BMPO Catalyzed Cross-Coupling of Aryl Halides with Hydrazine Hydrate in Water

Kumar, Siripuram Vijay,Ma, Dawei

supporting information, p. 1003 - 1006 (2018/09/20)

The N,N’-bis(2,6-dimethylphenyl)oxalamide was discovered as a powerful ligand for Cu-catalyzed cross-coupling of aryl halides with hydrazine hydrate, leading to the formation of a variety of aryl hydrazines at 80 oC in water under the assistance of K3PO4 and 4 mol% cetyltrimethylammonium bromide from aryl bromides and aryl iodides. Good to excellent yields were observed in most cases.

Pyrazole compounds as sigma receptor inhibitors

-

Page/Page column 12; 17-18, (2012/01/03)

The invention refers to compounds of general formula (I) having pharmacological activity towards the sigma receptor, to processes of preparation of such compounds, to pharmaceutical compositions comprising them, and to their use for the treatment and or prophylaxis of a disease in which the sigma receptor is involved.

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