5-Chloro-2-(methylamino)benzophenone CAS#: 1022-13-5; 凯望编码 (ChemWhat Code): 62757

IdentificationPhysical DataSpectra
Route of Synthesis (ROS)Safety and HazardsOther Data

Identification

英文名5-Chloro-2-(methylamino)benzophenone
IUPAC Name[5-chloro-2-(methylamino)phenyl]-phenylmethanone 
分子结构5-Chloro-2-methylaminobenzophenone-CAS-1022-13-5
CAS编号 1022-13-5
EINECS Number213-822-1
MDL NumberMFCD00008284
别名1022-13-5
5-Chloro-2-(methylamino)benzophenone
5-Chloro-2-methylaminobenzophenone
(5-Chloro-2-(methylamino)phenyl)(phenyl)methanone
2-Methylamino-5-chlorobenzophenone
Methanone, [5-chloro-2-(methylamino)phenyl]phenyl-
[5-chloro-2-(methylamino)phenyl]-phenylmethanone
BENZOPHENONE, 5-CHLORO-2-(METHYLAMINO)-
2-benzoyl-4-chloro-N-methylaniline
MFCD00008284
(5-Chloro-2-(methylamino)phenyl)phenylmethanone
Methanone, (5-chloro-2-(methylamino)phenyl)phenyl-
D4GD5770PI
[5-Chloro-2-(methylamino)phenyl]phenylmethanone
[5-Chloro-2-(methylamino)phenyl]-phenylmethanone (5-Chloro-2-(methylamino)benzophenone)
BRN 0882187
EINECS 213-822-1
UNII-D4GD5770PI
2-(Methylamino)-5-chlorobenzophenone
Oprea1_680102
BIDD:GT0238
SCHEMBL333291
DTXSID4061416
2-Methylamino-5-chlorbenzophenon
2-Methylamino-5-chlorbenzophenone
AC1105
Benzophenone, 2-acetamido-5-chloro-
AKOS000120857
CS-W012707
HY-W011991
2-(N-methylamino)-5-chlorobenzophenone
AC-10169
AS-11966
DIAZEPAM IMPURITY D [EP IMPURITY]
PD163859
SY037878
TEMAZEPAM IMPURITY A [EP IMPURITY]
DB-014567
RO-5-4365
5-Chloro-2-(methylamino)benzophenone, 99%
C2281
CHLORO-2-METHYLAMINOBENZOPHENONE, 5-
NS00023126
EN300-20890
A800545
SR-01000395967
Q-200536
SR-01000395967-1
[5-chloranyl-2-(methylamino)phenyl]-phenyl-methanone
Q27276093
Z104484472
分子式C14H12ClNO
分子量245.7
InChIInChI=1S/C14H12ClNO/c1-16-13-8-7-11(15)9-12(13)14(17)10-5-3-2-4-6-10/h2-9,16H,1H3
InChI KeyWPNMLCMTDCANOZ-UHFFFAOYSA-N
Isomeric SMILESCNC1=C(C=C(C=C1)Cl)C(=O)C2=CC=CC=C2
Patent Information
Patent IDTitlePublication Date
CN117229206Preparation method for synthesizing polysubstituted 2-quinolinone compound through base catalysis2023
US6407111Phenyl substituted pyridine and benzene derivatives2002

Physical Data

AppearanceYellow crystalline powder
Melting Point, °C
89 – 91
93 – 94
94.2 – 95.4
94.3 – 95.4
94.3 – 95.2
94.2 – 95.3
94.2 – 95.1
Density, g·cm-3
1.385

Spectra

Description (NMR Spectroscopy)Nucleus (NMR Spectroscopy)Solvents (NMR Spectroscopy)Frequency (NMR Spectroscopy), MHz
Chemical shifts, Spectrum1Hchloroform-d1600
Chemical shifts, Spectrum13Cchloroform-d1150
DEPT (Distorsionless Enhancement by Polarisation Transfer), Spectrum13Cchloroform-d1150
Chemical shifts, Spectrum13Cchloroform-d1100
Chemical shifts, Spectrum1Hchloroform-d1400
Chemical shifts1Hchloroform-d1400
Chemical shifts13Cchloroform-d1101
Description (IR Spectroscopy)Solvent (IR Spectroscopy)
ATR (attenuated total reflectance), Bands
Bandsneat (no solvent, solid phase), sodium chloride
Intensity of IR bands, Bandspotassium bromide
Bands
Bandspotassium bromide
BandsKBr
Description (UV/VIS Spectroscopy)Solvent (UV/VIS Spectroscopy)Comment (UV/VIS Spectroscopy)Absorption Maxima (UV/VIS), nmExt./Abs. Coefficient, l·mol-1cm-1
Oscillator strength, Band assignment, Spectrumethanol406
ethanol532
Absorption maximamethanol235, 40020300, 6410
Spectrumacetonitrile210 – 470 nm
Absorption maximaacetonitrile23619800
Absorption maxima4126950

Route of Synthesis (ROS)

Route of Synthesis (ROS) of 5-Chloro-2-(methylamino)benzophenone CAS 1022-13-5
Route of Synthesis (ROS) of 5-Chloro-2-(methylamino)benzophenone CAS 1022-13-5
ConditionsYield
With hydrazine hydrate; zinc(II) chloride In water at 20 – 30℃; for 4h; Temperature;

Experimental Procedure
3 Example 3:
Add to the reaction bottleAqueous solution of N-methyl-3-phenyl-5-chloro-2,1-benzisoxazole methyl quaternary ammonium salt 500g(containing N-methyl-3-phenyl-5-chloro-2,1-benzisoxazole methyl quaternary ammonium salt 200g),3 g of zinc chloride and 90 g of an aqueous solution of hydrazine hydrate.The reaction was carried out at 20 to 30 ° C for 3 hours. Cool down, filter,Wash the filter cake with 200g of purified water and dry it.2-methylamino-5-chlorobenzophenone 135g,The yield was 97.7%, the melting point was 94.3 to 95.2 ° C, and the HPLC purity was 99.2%.
97.7%
With hydrazine hydrate; methylamine In water at 25 – 30℃; for 5h; Temperature;

Experimental Procedure
3 Example 3:
500 g of an aqueous solution of N-methyl-3-phenyl-5-chloro-2,1-benzisoxazole methyl quaternary ammonium salt was added to the reaction flask (containingN-methyl-3-phenyl-5-chloro-2,1-benzisoxazole methyl quaternary ammonium salt 200 g), 2.4 g of monomethylamine aqueous solution and 60 g of aqueous hydrazine hydrate solution. The reaction was carried out at 25 to 30 ° C for 5 hours. The mixture was cooled, filtered, and washed with 200 g of purified water, and dried to obtain 135 g of 2-methylamino-5-chlorobenzophenone, the yield was 97.7%, the melting point was 94.3 to 95.1 ° C, and the HPLC purity was 99.3%.
97.7%
With Saccharomyces cerevisiae bakers’ yeast In methanol at 20℃; for 8h; pH=7; aq. phosphate buffer; Microbiological reaction; shaking;92%
With aluminium trichloride; zinc In tetrahydrofuran for 8h; Ambient temperature;62%

Safety and Hazards

Pictogram(s)exclamation-mark
SignalWarning
GHS Hazard StatementsH315 (97.8%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (97.8%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (95.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
Precautionary Statement CodesP261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
(The corresponding statement to each P-code can be found at the GHS Classification page.)

Other Data

Druglikeness
Lipinski rules component
分子量245.708
logP4.273
HBA2
HBD1
Matching Lipinski Rules4
Veber rules component
Polar Surface Area (PSA)29.1
Rotatable Bond (RotB)3
Matching Veber Rules2
Use Pattern
2-Methylamino-5-chlorobenzophenone is an essential intermediate primarily used in synthesizing diazepam and medazepam. These medications are widely used for their anxiolytic, sedative, and anticonvulsant properties. The structural characteristics of 2-Methylamino-5-chlorobenzophenone make it a valuable precursor for synthesizing various pharmacologically active compounds, especially in the benzodiazepine drug class.
In diazepam synthesis, 2-Methylamino-5-chlorobenzophenone plays a crucial role by providing the necessary amino and chloroaromatic groups required for the cyclization process, forming the core structure of the medication. Medazepam, another benzodiazepine derivative, has similar sedative effects and is structurally related to diazepam.

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