343781-45-3 Usage
Uses
Used in Pharmaceutical Industry:
4-BROMO-3,5-DICHLOROPYRIDINE is used as a building block for the synthesis of various pharmaceuticals. Its unique structure allows it to be a key component in the development of new drugs, contributing to the advancement of medicinal chemistry.
Used in Agrochemical Industry:
In the agrochemical sector, 4-BROMO-3,5-DICHLOROPYRIDINE serves as an intermediate in the production of various agrochemicals. Its incorporation into these products helps improve agricultural yields and protect crops from pests and diseases.
Used in Organic Synthesis:
4-BROMO-3,5-DICHLOROPYRIDINE is utilized as an intermediate in the manufacturing of a wide range of organic compounds. Its versatility in chemical reactions makes it a valuable asset in the synthesis of specialty chemicals, dyes, and other organic materials.
Check Digit Verification of cas no
The CAS Registry Mumber 343781-45-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,3,7,8 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 343781-45:
(8*3)+(7*4)+(6*3)+(5*7)+(4*8)+(3*1)+(2*4)+(1*5)=153
153 % 10 = 3
So 343781-45-3 is a valid CAS Registry Number.
InChI:InChI=1/C5H2BrCl2N/c6-5-3(7)1-9-2-4(5)8/h1-2H
343781-45-3Relevant academic research and scientific papers
Strategies for the selective functionalization of dichloropyridines at various sites
Marzi, Elena,Bigi, Anna,Schlosser, Manfred
, p. 1371 - 1376 (2007/10/03)
Whereas 2,3-dichloropyridine and 2,5-dichloro-4-(lithiooxy)-pyridine undergo deprotonation exclusively at the 4- and 2-positions, respectively, optional site selectivity can be implemented with 2,5- and 3,4-dichloropyridine (which are attacked, depending on the choice of the reagents, at either the 4- or 6- and either the 2- and 5-positions, respectively). Upon treatment with lithium diisopropylamide, 2,4-dichloro-3-iodopyridine, 3,5-dichloro-4-bromopyridine and 2,6-dichloro-3-iodopyridine afford 5-, 2- and 4-lithiated intermediates, but the latter isomerize instantaneously to species in which lithium and iodine have swapped places, the driving force being the low basicity of C-Li bonds when flanked by two neighboring halogens.
