[NH2:1][NH2:2].[C:3]([O:18]C)(=O)[CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH3:16]>CO>[C:3]([NH:1][NH2:2])(=[O:18])[CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH3:16]Hydrazine (1.9 mL, 0.058 mol) was added to a solution of methyl tetradecanoate (13.96 g, 0.058 mol) in methanol (300 mL) and the solution refluxed for 3 days. The mixture was allowed to cool and filtered to yield 6.17 g of a crystalline solid, m.p. 107°-111° C.
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