(2H-1,3-benzodioxol-5-yl)boronic acid → HCID 136027638, compound

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Reaction Steps

The titled compound was prepared in a manner analogous to Example 69, steps C-E, using 1-[6-iodo-4-oxo-3-(2-trimethylsilanyl-ethoxymethyl)-3,4-dihydro-quinazolin-2-yl]-1H-pyrazole-4-carboxylic acid ethyl ester (Example 69 product from step B) and 3,4-methylenedioxyphenylboronic acid in step C. (ESI): mass calcd. for C19H12N4O5, 376.1; m/z found, 377.1 [M+H]+. 1H NMR (500 MHz, DMSO-d6): 12.96 (br s, 2H), 8.97 (s, 1H), 8.29-8.25 (m, 2H), 8.11 (dd, J=8.5, 2.2 Hz, 1H), 7.75 (d, J=8.5 Hz, 1H), 7.38 (d, J=1.7 Hz, 1H), 7.27 (dd, J=8.1, 1.8 Hz, 1H), 7.05 (d, J=8.1 Hz, 1H), 6.10 (s, 2H).

Provenance & Evidence