942070-02-2 Usage
General Description
2-(4-bromo-5-chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is a chemical compound commonly used as a reactant in organic synthesis, particularly in coupling reactions. The presence of bromine and chlorine atoms and its dioxaborolane and thiophene structures play significant roles in its reactivity. 2-(4-bromo-5-chlorothiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane has a complex structure involving a combination of different chemical groups that contribute to its unique properties. It is typically used in research and development settings, and it is often stored in a cool, dry place away from strong oxidants given its reactive nature. Its exact physical and chemical properties, including its melting point, boiling point, and density, may vary based on each manufacturer's specific formulation.
Check Digit Verification of cas no
The CAS Registry Mumber 942070-02-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,2,0,7 and 0 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 942070-02:
(8*9)+(7*4)+(6*2)+(5*0)+(4*7)+(3*0)+(2*0)+(1*2)=142
142 % 10 = 2
So 942070-02-2 is a valid CAS Registry Number.
942070-02-2Relevant articles and documents
Iridium-catalyzed borylation of thiophenes: versatile, synthetic elaboration founded on selective C-H functionalization
Chotana, Ghayoor A.,Kallepalli, Venkata A.,Maleczka Jr., Robert E.,Smith III, Milton R.
, p. 6103 - 6114 (2008/12/20)
Iridium-catalyzed borylation has been applied to various substituted thiophenes to synthesize poly-functionalized thiophenes in good to excellent yields. Apart from common functionalities compatible with iridium-catalyzed borylations, additional functional group tolerance to acyl (COMe) and trimethylsilyl (TMS) groups was also observed. High regioselectivities were observed in borylation of 3- and 2,5-di-substituted thiophenes. Electrophilic aromatic C-H/C-Si bromination on thiophene boronate esters is shown to take place without breaking the C-B bond, and one-pot C-H borylation/Suzuki-Miyaura cross-coupling has been accomplished on 2- and 3-borylated thiophenes.
