Dimethylformamide diethylacetal → HCID 54362002, compound

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The 3,4-dihydro-2-(dimethylaminomethylene)-4-methyl-1(2H)-naphthalenone starting material was prepared from 4-methyl-1-tetralone (4.0 g, 25 mmol) and N,N-dimethylformamide diethyl acetal (17 ml, 100 mmol) to give the desired product as a thick yellow oil (4.53 g). δH (CDCl3) 8.03 (1H, dd, J 7.7, 1.5 Hz), 7.77 (1H, s), 7.39 (1H, td, J 7.4, 1.5 Hz), 7.29 (1H, td, J 7.5, 1.3 Hz), 7.20 (1H, dm, J 7.5 Hz), 3.12 (6H, s), 3.10-2.90 (2H, m), 2.75 (1H, apparent q, 6.9 Hz) and 1.30 (3H, d, J 6.9 Hz). MS (ES+) 216 (MH+, 100%).

Provenance & Evidence