摘要:
New 2,6-bis[(3-chlorosulfonyl-4-methyl)phenyl]-4H-pyran-4-one and 2-[(3-chlorosulfonyl-4-methyl)phenyl]-6-methyl-4H-pyran-4-one were synthesized by means of a reaction of chlorosulfonic acid with corresponding pyrones at 050 degrees C and were treated with various alcohols and primary and secondary alkyl and aryl amines to give the corresponding sulfonates 4a-e in 20-49% and sulfonamides 3a-l in 55-82% yields. GRAPHICAL ABSTRACT[image omitted].