Zawadowski, Teodor published the artcileSynthesis of 3-carboxy-2,7-dimethylfuro[2,3-f]benzofuran and some of its derivatives with expected pharmacological activity. I, Application In Synthesis of 4584-49-0, the publication is Acta Poloniae Pharmaceutica (1986), 43(1), 13-17, database is CAplus.
O-Alkylation of benzofuran I (R = H) with BrCH2CO2Et gave I (R = CH2CO2Et), which was saponified with KOH and cyclized (NaOAc in Ac2O) to benzodifuran II. II was converted to Me, Et, and several tertiary 2-aminoalkyl esters, isolated as HCl salts.
Acta Poloniae Pharmaceutica published new progress about 4584-49-0. 4584-49-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Salt,Amine,Aliphatic hydrocarbon chain, name is 2-Chloro-N,N-dimethylpropan-1-amine hydrochloride, and the molecular formula is C6H8N2O2S, Application In Synthesis of 4584-49-0.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics