Phenylboronic Acid → 2-(3-Chloro-phenyl)-3-phenyl-2,4,5,6,7,8-hexahydro-1,2,6-triaza-azulene

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2-(3-Chloro-phenyl)-3-phenyl-4,5,7,8-tetrahydro-2H-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester. The desired compound (53.9 mg) was prepared from 142.7 mg of 2-(3-chloro-phenyl)-3-trifluoromethanesulfonyloxy-4,5,7,8-tetrahydro-2H-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester (made as in Example 176, Steps A and B) replacing phenylhydrazine with (3-chloro-phenyl)-hydrazine, as described in Example 43, Step D, using 102.1 mg of phenylboronic acid. MS (ESI): exact mass calculated for C24H26ClN3O2, 423.17. found, m/z 424.1 [M+H]+.

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