Methylurea → 6-amino-5-ethyl-1-methylpyrimidine-2,4(1H,3H)-dione

反応式

[C:1](C(CC)C(OCC)=O)#N.CNC(N)=O.[NH2:16][C:17]1[N:22]([CH2:23]C)[C:21](=[O:25])[NH:20][C:19](=[O:26])[C:18]=1[CH3:27]>>[NH2:16][C:17]1[N:22]([CH3:23])[C:21](=[O:25])[NH:20][C:19](=[O:26])[C:18]=1[CH2:27][CH3:1]

参加物

反応物 3

HCID 11719Methylurea

HCID 219611Ethyl 2-cyanobutanoate

HCID 117772300HCID 117772300、化合物

生成物 1

HCID 8169016-amino-5-ethyl-1-methylpyrimidine-2,4(1H,3H)-dione

実験手順

Ethyl 2-cyanobutanoate was reacted with 1-methylurea according to the method described for synthesis of C9 in Example 5. The product was obtained as a white solid. Yield: 5.95 g, 35.2 mmol, 66%. 1H NMR (400 MHz, DMSO-d6) δ 10.36 (s, 1H), 6.41 (s, 2H), 3.22 (s, 3H), 2.22 (q, J=7.3 Hz, 2H), 0.87 (t, J=7.3 Hz, 3H).