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3-Bromo-2-methyl benzoyl chloride, with the molecular formula C8H6BrClO, is a benzoyl chloride derivative characterized by the presence of a bromine atom and a methyl group on the benzene ring. This chemical compound is recognized for its versatility in organic chemistry and serves as a crucial intermediate in the synthesis of a range of pharmaceuticals, agrochemicals, and other organic compounds. Its reactivity necessitates careful handling in well-ventilated environments to prevent skin contact or inhalation.

21900-48-1

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21900-48-1 Usage

Uses

Used in Pharmaceutical Industry:
3-Bromo-2-methyl benzoyl chloride is used as a key intermediate for the synthesis of various pharmaceuticals, contributing to the development of new drugs and therapeutic agents. Its unique structure allows for the creation of diverse chemical entities with potential medicinal properties.
Used in Agrochemical Industry:
In the agrochemical sector, 3-Bromo-2-methyl benzoyl chloride is utilized as a vital component in the production of pesticides and other crop protection agents. Its role in these applications is to provide the necessary chemical backbone for the active ingredients, enhancing their efficacy and selectivity.
Used in Organic Chemistry Research:
3-Bromo-2-methyl benzoyl chloride is employed as a versatile reagent in organic chemistry research, particularly in the preparation of amides, esters, and carboxylic acids. Its reactive nature facilitates a wide range of chemical reactions, enabling the synthesis of complex organic molecules for various applications.
Used in Chemical Synthesis:
3-Bromo-2-methyl benzoyl chloride is used as a building block in the synthesis of complex organic compounds, including specialty chemicals, dyes, and other industrial products. Its unique functional groups and reactivity make it a valuable component in the creation of novel chemical entities with specific properties and applications.

Check Digit Verification of cas no

The CAS Registry Mumber 21900-48-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,0 and 0 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21900-48:
(7*2)+(6*1)+(5*9)+(4*0)+(3*0)+(2*4)+(1*8)=81
81 % 10 = 1
So 21900-48-1 is a valid CAS Registry Number.

21900-48-1SDS

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-bromo-2-methylbenzoyl chloride

1.2 Other means of identification

Product number -
Other names 3-bromo-2-methylbenzoic acid chloride

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:21900-48-1 SDS

21900-48-1Relevant academic research and scientific papers

Lead derivatization of ethyl 6-bromo-2-((dimethylamino)methyl)-5-hydroxy-1-phenyl-1H-indole-3-carboxylate and 5-bromo-2-(thiophene-2-carboxamido) benzoic acid as FabG inhibitors targeting ESKAPE pathogens

Varakala, Saiprasad Dasugari,Reshma, Rudraraju Srilakshmi,Schnell, Robert,Dharmarajan, Sriram

, (2021/11/26)

Our previous studies on FabG have identified two compounds 5-bromo-2-(thiophene-2-carboxamido) benzoic acid (A) and ethyl 6-bromo-2-((dimethylamino)methyl)-5-hydroxy-1-phenyl-1H-indole-3-carboxylate(B) as best hits with allosteric mode of inhibition. FabG is an integral part of bacterial fatty acid biosynthetic system FAS II shown to be an essential gene in most ESKAPE Pathogens. The current work is focussed on lead expansion of these two hit molecules which ended up with forty-three analogues (twenty-nine analogues from lead compound A and fourteen compounds from lead compound B). The enzyme inhibition studies revealed that compound 15 (effective against EcFabG, AbFabG, StFabG, MtFabG1) and 19 (inhibiting EcFabG and StFabG) had potency of broad-spectrum inhibition on FabG panel.

Facile Synthesis of Alkylidene Phthalides by Rhodium-Catalyzed Domino C?H Acylation/Annulation of Benzamides with Aliphatic Carboxylic Acids

Liu, Sien,He, Bangyue,Li, Hongyi,Zhang, Xiaofeng,Shang, Yaping,Su, Weiping

supporting information, p. 15628 - 15633 (2021/10/05)

The Rh-catalyzed ortho-C(sp2)?H functionalization of 8-aminoquinoline-derived benzamides with aliphatic acyl fluorides generated in situ from the corresponding acids has been developed. This reaction initiated with 8-aminoquinoline-directed ortho-C(sp2)?H acylation, which was accompanied by subsequent intramolecular nucleophilic acyl substitution of amide group to produce alkylidene phthalides This approach exhibits high stereo-selectivity for Z-isomer products, and tolerates a variety of functional groups as well as aliphatic carboxylic acids with diverse structural scaffolds.

Improved synthesis of sterically encumbered heteroaromatic biaryls from aromatic β-keto esters

Rosen, Brandon R.,Ul Sharif, Ehesan,Miles, Dillon H.,Chan, Nicholas S.,Leleti, Manmohan R.,Powers, Jay P.

supporting information, (2020/03/25)

A protocol for the synthesis of hindered 4-aryl 2-aminopyrimidines from β–keto esters is described. The process employs trifluoroethanol as an essential additive to promote the guanidine condensation reaction, enabling the synthesis of 25 aryl- and heteroaryl substituted aminopyrimidines in good yields and high purities with no column chromatography. The conditions described herein are readily scalable and have been employed in the large-scale synthesis of the clinical A2a/A2bR antagonist AB928.

Macrofilaricidal Benzimidazole-Benzoxaborole Hybrids as an Approach to the Treatment of River Blindness: Part 2. Ketone Linked Analogs

Carter, David S.,Jacobs, Robert T.,Freund, Yvonne R.,Berry, Pamela W.,Akama, Tsutomu,Easom, Eric E.,Lunde, Christopher S.,Rock, Fernando,Stefanakis, Rianna,Mckerrow, James,Fischer, Chelsea,Bulman, Christina A.,Lim, Kee Chong,Suzuki, Brian M.,Tricoche, Nancy,Sakanari, Judy A.,Lustigman, Sara,Plattner, Jacob J.

, p. 180 - 185 (2020/02/13)

The optimization of a series of benzimidazole-benzoxaborole hybrid molecules linked via a ketone that exhibit good activity against Onchocerca volvulus, a filarial nematode responsible for the disease onchocerciasis, also known as river blindness, is desc

Development of a Scalable and Practical Synthesis of AB928, a Dual A2a/A2bReceptor Antagonist

Debien, Laurent P. P.,Jeffrey, Jenna L.,Leleti, Manmohan R.,Miles, Dillon H.,Powers, Jay P.,Rosen, Brandon R.,Sharif, Ehesan U.

, p. 1254 - 1261 (2020/08/14)

AB928 is a potent and selective dual antagonist of the A2a and A2b receptors, which is currently in clinical trials. Here, we report the development of two scalable and practical syntheses of AB928. The first-generation synthesis was used to successfully

PROCESSES FOR PREPARING AMINOPYRIMIDINE COMPOUNDS

-

Paragraph 0079, (2020/12/29)

Provided herein are improved processes for preparing aminopyrimidine compounds of Formula (I). The disclosed processes advantageously proceed through a β-diketoester intermediate of Formula (A) and avoid the direct linking of a pyrimidine and phenyl moiet

N-Heterocyclic Carbene Catalyzed Photoenolization/Diels–Alder Reaction of Acid Fluorides

Agrawal, Arush,G?tze, Jan P.,Golz, Paul,Hopkinson, Matthew N.,Mavroskoufis, Andreas,Rajes, Keerthana,Ru?, Vincent

supporting information, p. 3190 - 3194 (2020/01/24)

The combination of light activation and N-heterocyclic carbene (NHC) organocatalysis has enabled the use of acid fluorides as substrates in a UVA-light-mediated photochemical transformation previously observed only with aromatic aldehydes and ketones. Stoichiometric studies and TD-DFT calculations support a mechanism involving the photoactivation of an ortho-toluoyl azolium intermediate, which exhibits “ketone-like” photochemical reactivity under UVA irradiation. Using this photo-NHC catalysis approach, a novel photoenolization/Diels–Alder (PEDA) process was developed that leads to diverse isochroman-1-one derivatives.

Rhodium-Catalyzed Alkylation of C?H Bonds in Aromatic Amides with Non-activated 1-Alkenes: The Possible Generation of Carbene Intermediates from Alkenes

Yamaguchi, Takuma,Natsui, Satoko,Shibata, Kaname,Yamazaki, Ken,Rej, Supriya,Ano, Yusuke,Chatani, Naoto

supporting information, p. 6915 - 6919 (2019/05/10)

The alkylation of C?H bonds (hydroarylation) in aromatic amides with non-activated 1-alkenes using a rhodium catalyst and assisted by an 8-aminoquinoline directing group is reported. The addition of a carboxylic acid is crucial for the success of this reaction. The results of deuterium-labeling experiments indicate that one of deuterium atoms in the alkene is missing, suggesting that the reaction does not proceed through the commonly accepted mechanism for C?H alkylation reactions. Instead the reaction is proposed to proceed through a carbene mechanism. The carbene mechanism is also supported by preliminary DFT calculations.

Cobalt-Catalyzed C-H Iodination of Aromatic Amides with Molecular Iodine through the Use of a 2-Aminophenyloxazoline-Based Bidentate-Chelation System

Kommagalla, Yadagiri,Chatani, Naoto

supporting information, p. 5971 - 5976 (2019/08/26)

The cobalt-catalyzed chelation-assisted C-H iodination of aromatic amides using molecular iodine as an iodinating reagent is reported. The reaction is carried out in an atmosphere of air and uses Co(OAc)2·4H2O as an efficient catalys

Rhodium-Catalyzed Alkenylation of C-H Bonds in Aromatic Amides with Alkynes

Shibata, Kaname,Natsui, Satoko,Chatani, Naoto

supporting information, p. 2234 - 2237 (2017/05/12)

The rhodium-catalyzed alkenylation of C-H bonds of aromatic amides with alkynes is reported. A variety of functional groups, including OMe, OAc, Br, Cl, and even NO2, are applicable to this reaction to give the corresponding hydroarylation prod

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