Arisawa, Mieko published the artcileRhodium-catalyzed synthesis of benzofurans by the reaction of ketones and o-difluorobenzenes, Quality Control of 350-30-1, the publication is Heterocycles (2012), 86(2), 1103-1118, database is CAplus.
In the presence of catalytic amounts of RhH(PPh3)4 and 1,2-bis(diphenylphosphino)ethane (dppe), ketones reacted with o-difluorobenzenes giving benzofurans in high yields. The α-arylation of ketones and furan cyclization proceeded without using a base. Benzofuran cyclization was applied to substituted pentafluorobenzenes to give 6-substituted-4,5,7-trifluorobenzofuranes.
Heterocycles published new progress about 350-30-1. 350-30-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Nitro Compound,Benzene, name is 3-Chloro-4-fluoronitrobenzene, and the molecular formula is C6H3ClFNO2, Quality Control of 350-30-1.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics