3-Chloro-4-fluorophenylboronic Acid (contains varying amounts of Anhydride) → HCID 59752682, compound

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Reaction Steps

The title compound (31 mg) was prepared according to Example 180 using 146 mg of 2-cyclopentyl-3-trifluoromethanesulfonyloxy-4,5,7,8-tetrahydro-2H-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester (Example 180, Step A) and 168 mg of 3-chloro-4-fluorophenylboronic acid. MS (ESI): exact mass calculated for C18H21ClFN3, 333.14; found, m/z 334.4 [M+H]+, 336.4 [M+H]+. 1H NMR (500 MHz, CD3OD): 7.39-7.31 (m, 2H), 7.22-7.18 (m, 1H), 4.37 (m, 1H), 3.31-3.28 (m, 2H), 3.07-3.03 (m, 2H), 2.67-2.64 (m, 2H), 2.11-1.78 (m, 6H), 1.56-1.47 (m, 2H).

Provenance & Evidence