Trityl chloride → HCID 86592184, compound

Participants

Reaction Steps

To a solution of 2.0 g (8.92 mmol) of dihydrazide 2 in 20 ml of DMF was added 9.1 ml (53.5 mmol) of diisopropylamine and 5.6 g (19.6 mmol) of trityl chloride. The mixture was stirred for 2.5 hours, concentrated, and crystallized in 100 ml ethyl acetate. The product was filtered, washed with cold ethanol, dried under low vacuum at 40° C. for 18 h o yield 5.2 g (82%) of 3: 1H-NMR (DMSO-d6,) 9.36 (d, J=7.4 Hz, 2H), 7.47–7.17 (m, 33H), 6.12 (d, J=7.4 Hz, 2H), 5.28 (t, J=5.7 Hz, 1H), 4.41 (d, J=5.7 Hz); 13C-NMR 165.4, 144.3, 142.5, 132.6, 128.5, 127.7, 126.8, 124.6, 73.4, 62.1.

Provenance & Evidence