Pyrrolysis of N-substituted-2,4-dimethyl-1,3-butadienesultams-(1,4) 2a,b gave the pyrrol derivatives 3a,b. The carbamates 4a,b were prepared by reaction of the sultams 2c,d with methylisocyanate. Bromination of 2d with Br2 yielded the monobromosultam 5. The hydrazones 6a,b were obtained by condensation of 4-aminoacetophenone with hydrazides. 2,4-dimethyl-1,3-butadienesultone-(1,4) 1 reacted with 6a,b to give the sultams 7a,b. Propanesultone-(1,3) 8 reacted with amino-compounds yielding the corresponding 3N substituted-aminopropane-I-sulphonic acids 9a-c, 11, 12, and 13a-c. Dehydration of 9 with POCl3 gave the N-substituted-propane-sultams-(1,3) 10a-c. Butanesultone-(1,4) 14 reacted with amino-compount to give the amino-sulphonic acids 15a,b which cyclized to the sultams 16a,b.
