N-Pentylhydrazine → HCID 76629633, compound

Participants

Reaction Conditions

Reaction Steps

To a magnetically stirred solution of oxo-acetic acid ethyl ester (35.08 ml, 177 mmol; 50% solution in toluene) in ethanol (450 ml) was added n-pentylhydrazine (21.7 g, 212 mmol) and the resulting solution was heated at 80° C. for 16 hours. The obtained mixture was allowed to attain room temperature and concentrated. The resulting residue was taken up in ethylacetate and water. The organic layer was separated and subsequently dried over MgSO4, filtered and concentrated to give (pentylhydrazono)acetic acid ethyl ester (Intermediate II-1) (32.2 gram, 93% yield) as a purple colored oil. 1H-NMR (400 MHz, CDCl3) δ 0.87-0.94 (m, 3H), 1.25-1.42 (m, 7H), 1.55-1.68 (m, 2H), 3.17-3.23 (m, 1H), 3.35-3.45 (m, 1H), 4.28 (q, J=7, 2H), 6.51 (br s, 1H), 6.72 (s, 1H).

Provenance & Evidence