2-fluoro- , 5-fluoro- , and 6-fluoroisoproterenol were synthesized by reduction of the schiff base formed between the corresponding ring-fluorinated 3,4-bis ( benzyloxy ) phenethanolamine and acetone , followed by reductive debenzylation in the presence of oxalic acid to yield crystalline neutral oxalates .
C0069715
oxalic acid
C0029988
oxalates