New Advances in Chemical Research, May 2021. In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Reference of 2213-63-0, We’ll be discussing some of the latest developments in chemical about CAS: 2213-63-0, name is 2,3-Dichloroquinoxaline. In an article，Which mentioned a new discovery about 2213-63-0
A systematic study of the synthesis and properties of 1-aza-, 4-aza-, and 1,4-diaza[4]helicenes as well as the previously unknown S-shaped double 1,4-diaza[4]helicenes has been reported. The synthetic route to the aza- and diaza[4]helicenes involved an electrophile-induced cyclization of 3(2)-alkynyl-2(3)-(naphthalen-1-yl)azines (i.e., quinoxaline, pyrazine, pyridine), which were prepared in two steps from the commercially available ortho-dihalo-substituted azine. Trifluoroacetic acid (TFA) and ICl were used as electrophiles. The ICl-promoted cyclization provided the 5-iodo derivatives of the aza- and diaza[4]helicenes in yields of 47?71 %. The use of TFA as the electrophile afforded the helicenes along with isomeric products from an alternative cyclization and subsequent 1,2-shift of the C?C bond (e.g., naphtho[2,1-f]quinoxalines or naphtho[2,1-a]phenazines, 87?89 % total yield, 1.5?1.8:1 ratio). The presence of an iodine substituent in the hetero[4]helicenes allowed for the introduction of an alkynyl group by using a Sonogashira reaction. The subsequent cycloizomerization upon treatment with TFA gave the S-shaped double 1,4-diaza[4]helicenes. The molecular structures and crystal packing of the synthesized hetero[4]helicenes relative to those of [4]carbohelicene have been discussed.
A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 2213-63-0
Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1343 | ChemSpider