Ethyl isocyanatoacetate → N-[(6-Hydroxy-1,3-bis{[2-(methyloxy)phenyl]methyl}-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl)carbonyl]glycine

HRID 2410047Notes

Reaction equation

HRID 2410047 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[CH2:9][N:10]1[C:15](=[O:16])[CH2:14][C:13](=[O:17])[N:12]([CH2:18][C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=2[O:25][CH3:26])[C:11]1=[O:27].C(N(C(C)C)CC)(C)C.[N:37]([CH2:40][C:41]([O:43]CC)=[O:42])=[C:38]=[O:39]>ClCCl>[OH:17][C:13]1[N:12]([CH2:18][C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=2[O:25][CH3:26])[C:11](=[O:27])[N:10]([CH2:9][C:4]2[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=2[O:2][CH3:1])[C:15](=[O:16])[C:14]=1[C:38]([NH:37][CH2:40][C:41]([OH:43])=[O:42])=[O:39]

Participants

5

Reactant 3

HCID 76283Ethyl isocyanatoacetateHCID 81531DiisopropylethylamineHCID 233034641,3-bis(2-methoxybenzyl)pyrimidine-2,4,6(1H,3H,5H)-trione

Product 1

HCID 24830241N-[(6-Hydroxy-1,3-bis{[2-(methyloxy)phenyl]methyl}-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl)carbonyl]glycine

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

N-[(6-hydroxy-1,3-bis{[2-(methyloxy)phenyl]methyl}-2,4-dioxo-1,2,34-tetrahydro-5-pyrimidinyl)carbonyl]glycine. A mixture of 1,3-bis{[2-(methyloxy)phenyl]methyl}-2,4,6(1H,3H,5H)-pyrimidinetrione (1.64 g, 4.45 mmoles) and diisopropylethylamine (1.56 mL, 8.94 mmoles) was stirred in dichloromethane (30 mL) and treated with ethyl isocyanatoacetate (500 uL, 4.45 mmoles). The mixture was stirred for 5 hours, washed with 1 molar hydrochloric acid (×2), evaporated, taken up in ethanol-6 molar sodium hydroxide and stirred overnight. The mixture was acidified and extracted into ethyl acetate (×2). The extracts were washed with 1 molar hydrochloric acid evaporated, dried and evaporated. The title compound was recrystallized from acetic acid (1.0 g, 48%). 1H NMR (400 MHz, DMSO-d6) δ ppm 12.51 (br. s., 1 H), 10.11 (t, J=4.93 Hz, 1 H), 7.20-7.28 (m, 2 H), 7.00 (d, J=7.83 Hz, 2 H), 6.86-6.96 (m, 4 H), 5.00 (s, 4 H), 4.10-4.18 (m, 2 H), 3.82 (s, 6 H).

Workup

  1. washwashed with 1 molar hydrochloric acid (×2)
  2. customevaporated
  3. stirringstirred overnight
  4. extractionextracted into ethyl acetate (×2)
  5. washThe extracts were washed with 1 molar hydrochloric acid
  6. customevaporated
  7. customdried
  8. customevaporated
  9. customThe title compound was recrystallized from acetic acid (1.0 g, 48%)

Sources & evidence

ORD record
ord-ea015ea81a674318999d863477e631c1
Source dataset
uspto-grants-2014_08
Patent number
US08815884B2

Reaction notes

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