On page 10 of the patent, example 6, it states that after the first method resulted in "8-chloro-1-methyl-6-phenyl-4H-s-triazol(4,3-a)(1,4)benzodiazepine". It also states that it yielded "8-chloro-1-methyl-6-phenyl-4H-s-triazolo(4,3-a)(1,4) benzodiazepine".
If alprazolam is "8-chloro-1-methyl-6-phenyl-4H-s-triazolo(4,3-a)(1,4)benzodiazepine", what is the difference between that chemical and "8-chloro-1-methyl-6-phenyl-4H-s-triazol(4,3-a)(1,4)benzodiazepine".