4-Methoxybenzenesulfonyl chloride → HCID 15435816, compound

Participants

Reaction Steps

In 10 ml of pyridine was dissolved 0.8 g of the (E)-3-(2-phenylethenyl)-2-aminopyridine obtained in Reference Example 1. To this solution was added 0.92 g of p-methoxyphenylsulfonyl chloride gradually under ice-cooling and the mixture was stirred at room temperature overnight. After completion of the reaction, the solvent was evaporated off and the resulting residue was purified by silica gel column chromatography (eluent: CHCl3 /MeOH=9/1). The crystal crop thus obtained was recrystallized from ethanol to provide 0.77 g of the desired compound (yellow plates). m.p. 152-155° C. Elemental analysis for C20H19N2O3S

Provenance & Evidence