2-[2-(tert-butyldimethylsilanyloxy)propyl]-4,6,7-trichloro-2H-indazole → 2-Amino-2-methyl-3-(4,6,7-trichloro-2H-indazol-2-yl)propionitrile

Participants

Reaction Steps

2-Amino-2-methyl-3-(4,6,7-trichloro-2H-indazol-2-yl)propionitrile (0.16 g, 60%) was prepared using a procedure similar to that described in Example 1, part b, except starting from 1-(4,6,7-trichloro-2H-indazol-2-yl)propan-2-one (0.25 g). 1-(4,6,7-Trichloro-2H-indazol-2-yl)propan-2-one was prepared using a procedure similar to that described in Example 105 part c and d except starting from 2-[2-(tert-butyldimethylsilanyloxy)propyl]-4,6,7-trichloro-2H-indazole (1.4 g, 69%) that was prepared using a procedure similar to that described in Example 132 part a except starting from [2-(tert-butyldimethylsilanyloxy)propyl]-(2-nitro-3,4,6-trichlorobenzypamine (2.2 g). [2-(tert-Butyldimethylsilanyloxy)propyl]-(2-nitro-3,4,6-trichlorobenzypamine (2.2 g, 44%) was prepared using a procedure similar to that described in Example 105 part a except starting from 2-nitro-3,4,6-trichlorobenzaldehyde (3 g) that was prepared as follows:

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