619-42-1 Usage
Chemical Properties
WHITE CRYSTALS OR CRYSTALLINE POWDER
Uses
Different sources of media describe the Uses of 619-42-1 differently. You can refer to the following data:
1. Methyl 4-bromobenzoate is halogenated benzoate used as a reagent in organic synthesis. Methyl 4-bromobenzoate can be used to stimulate microbial dechlorination of PCBs. It is also used in the preparation of stable radioiodinating reagent to label monoclonal antibodies for radiotherapy of cancer.
2. Methyl 4-bromobenzoate is used as a starting material in the synthesis of three-carbon-bridged 5-substituted furo[2,3-d]pyrimidine and 6-substituted pyrrolo[2,3-d]pyrimidine and methyl 4-tri-n-butylstannylbenzoate. It is also used to stimulate microbial dechlorination of polychlorinated biphenyls. Further, it is used in the preparation of stable radioiodinating reagent to label monoclonal antibodies for radiotherapy of cancer.
3. Methyl 4-bromobenzoate may be used in the following syntheses:Three-carbon-bridged 5-substituted furo[2,3-d]pyrimidine and 6-substituted pyrrolo[2,3-d]pyrimidine analogs, employed as antifolates. Methyl 4-tri-n-butylstannylbenzoate.Methyl 4-(2-pyridyl)benzoate by cross coupling reaction with lithium 2-pyridyltriolborate.Methyl 4-imidazo[1,2-a]pyridin-3-ylbenzoate by ligand-free Pd(OAc)2 catalyzed reaction with Imidazo[1,2-a]pyridine.Methyl (E)-4-[3-(2-methoxycarbonylvinyl)-thiophen-2-yl]acrylate by reacting with methyl (E)-3-(thiophen-3-y)lacrylate.
General Description
Methyl 4-bromobenzoate is a para-substituted aryl bromide. Mol-ecules of methyl 4-bromobenzoate are almost planar. The compound is isostructural with methyl 4-iodo-benzoate. The Zeeman effect on the N.Q.R. (nuclear quadrupole resonance) of methyl 4-bromobenzoate on single crystals, has been investigated by the ′geometric method′.
Purification Methods
Crystallise the ester from MeOH. EtOH (m 81o, also 80.5o, 79.5o) or *C6H6/pet ether (m 78-79o). [Beilstein 9 H 352, 9 III 1405, 9 IV 1017.]
Check Digit Verification of cas no
The CAS Registry Mumber 619-42-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,1 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 619-42:
(5*6)+(4*1)+(3*9)+(2*4)+(1*2)=71
71 % 10 = 1
So 619-42-1 is a valid CAS Registry Number.
InChI:InChI=1/C8H7BrO2/c1-11-8(10)6-2-4-7(9)5-3-6/h2-5H,1H3
619-42-1Relevant articles and documents
The tremulanes, a new group of sesquiterpenes from the aspen rotting fungus Phellinus tremulae
Ayer,Cruz
, p. 7529 - 7534 (1993)
A series of new sesquiterpenes, the tremulanes, possessing a previously unreported substituted perhydroazulene carbon skeleton, has been isolated from liquid cultures of the aspen (Populus tremuloides) rotting fungus Phellinus tremulae. The structures were determined by NMR techniques (1H- 1H COSY, HMQC, and HMBC) and other physical methods including, in the case of tremulenolide A (6), X-ray crystallography. The chemical correlation of tremulenediol A (10) with tremulenolide A (6) is described as is the correlation of tremulenedial (8) with tremulenediol B (11). The absolute configuration of the compounds is assigned by application of the olefin octant rule to the allylic alcohol tremulenediol A (10). These new sesquiterpenes do not obey the biogenetic isoprene rule and it is suggested that they may not be derived from farnesyl pyrophosphate.
The Highly Effective Cobalt Based Metal–Organic Frameworks Catalyst for One Pot Oxidative Esterification Under Mild Conditions
Chindawong, Chakkresit,Mekrattanachai, Pagasukon,Setthaya, Naruemon,Song, Wei Guo,Zhu, Lei
, (2021/08/03)
The cobalt-based metal organic frameworks (Co-MOFs) catalyst has been prepared with using terephthalic acid and 4,4′-bipyridine as organic linkers by facile solvothermal method for one pot oxidative esterification. The prepared catalyst was pyrolysed at different temperature and then applied for oxidation of aldehyde using molecular oxygen as benign oxidant under mild conditions. The Co-MOFs pyrolysed at 800?°C (denoted as Co-MOFs-800) catalyst exhibited excellent catalytic activity, selectivity and recyclability toward the oxidative esterification of benzaldehydes. Furthermore, it can be reused up to 5 runs without significant loss of activity. Graphic Abstract: [Figure not available: see fulltext.]
Direct bromodeboronation of arylboronic acids with CuBr2 in water
Tang, Yan-Ling,Xia, Xian-Song,Gao, Jin-Chun,Li, Min-Xin,Mao, Ze-Wei
supporting information, (2021/01/05)
An efficient and practical method has been developed for the preparation of aryl bromides via the direct bromodeboronation of arylboronic acids with CuBr2 in water. This strategy provides several advantages, such as being ligand-free, base-free, high yielding, and functional group tolerant.
