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1849-01-0

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1849-01-0 Usage

Chemical Properties

White to slightly beige crystalline powder

Check Digit Verification of cas no

The CAS Registry Mumber 1849-01-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,4 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1849-01:
(6*1)+(5*8)+(4*4)+(3*9)+(2*0)+(1*1)=90
90 % 10 = 0
So 1849-01-0 is a valid CAS Registry Number.
InChI:InChI=1/C8H8N2O/c1-10-7-5-3-2-4-6(7)9-8(10)11/h2-5H,1H3,(H,9,11)

1849-01-0SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name 3-methyl-1H-benzimidazol-2-one

1.2 Other means of identification

Product number -
Other names 1,3-dihydro-3-methyl-2H-benzimidazol-2-one

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:1849-01-0 SDS

1849-01-0Relevant articles and documents

Carbonylation of o-phenylenediamine and o-aminophenol with dimethyl carbonate using lead compounds as catalysts

Fu, Yue,Baba, Toshihide,Ono, Yoshio

, p. 91 - 97 (2001)

Lead compounds are active catalysts for carbonylation and carbonylation/methylation of o-phenylenediamine and o-aminophenol with dimethyl carbonate (DMC). 2-Benzimidazolone was obtained in 84% yield by the reaction of o-phenylenediamine with DMC for 1 h at 443 K in the presence of Pb(NO3)2. In the presence of Pb(OAc)2, the reaction quantitatively gave 1,3-dimethyl-2-benzimidazolone, which was formed by methylation of the primary product, 2-benzimidazolone, at 473 K. The effects of reaction variables on the yields of 2-benzimidazolone and 1,3-dimethyl-2-benzimidazolone were examined. The reaction of o-aminophenol with DMC selectively gave a carbonylation product, 2-benzoxazolone, or a carbonylation/methylation product, 3-methyl-2-benzoxazolone, depending on the reaction conditions in the presence of Pb(OAc)2.

-

Popov et al.

, (1976)

-

Study of unsaturated azoles. 16 Synthesis and reactions of 2-styrylbenzimidazoles

Popov

, p. 949 - 953 (1997)

Fusion of 1-methyl-2-styrylbenzimidazole with KOH leads to separation of the phenylvinyl or the N-methyl group to give 1-methylbenzimidazol-2-one or 2-styrylbenzimidazole in the ratio 1:1. Decomposition of the perbromides of benzimidazoles by heating in water gives 5(6)-bromobenzimidazoles and, in the presence of KI, to 5(6)-iodobenzimidazoles. Methods are presented for the synthesis of 5(6)-bromo- and 5(6)-iodo-2-styryl- and also 2-α-bromo- and 2-α-iodostyrylbenzimidazoles. 1998 Plenum Publishing Corporation.

Iron-Catalyzed Intramolecular C—H Amidation of N-Benzoyloxyureas

Zhong, Dayou,Wu, Lin-Yang,Wang, Xing-Zhen,Liu, Wen-Bo

, p. 855 - 858 (2021/02/16)

A redox-neutral Fe-catalyzed intramolecular C—H amidation of N-benzoyloxyureas is described. This methodology employs a simple iron complex in situ generated from Fe(OTf)2 and bipyridine as the catalyst and N-benzoyloxyureas as the nitrene prec

Methylenation for Aldehydes and Ketones Using 1-Methylbenzimidazol-2-yl Methyl Sulfone

Ando, Kaori,Oguchi, Mai,Kobayashi, Takahisa,Asano, Haruka,Uchida, Nariaki

, p. 9936 - 9943 (2020/09/04)

The methylenation reagent 1-methylbenzimidazol-2-yl methyl sulfone 2 reacts with various aldehydes and ketones in the presence of t-BuOK (room temperature, 1 h) in dimethylformamide to give the corresponding terminal alkenes generally in high yields. For sensitive substrates, the reaction is better carried out at low temperature using sodium hexamethyldisilazide in 1,2-dimethoxyethane. The byproduct is easily removed from the products, and the reaction conditions are mild and practical. Reagent 2 can be easily prepared from commercially available 2-mercaptobenzimidazole 5 in 95% yield without any expensive reagents.

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