1,2-Dichloroethane → tert-butyl 4-(3-(5-((2-fluoro-4-iodophenyl)amino)-3-(4-methoxybenzyl)-6,8-dimethyl-2,4,7-trioxo-3,4,6,7-tetrahydropyrido[4,3-d]pyrimidin-1(2H)-yl)benzoyl)piperazine-1-carboxylate

HRID 1487166Notes

Reaction equation

HRID 1487166 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([I:8])[CH:5]=[CH:4][C:3]=1[NH:9][C:10]1[N:11]([CH3:42])[C:12](=[O:41])[C:13]([CH3:40])=[C:14]2[C:19]=1[C:18](=[O:20])[N:17]([CH2:21][C:22]1[CH:27]=[CH:26][C:25]([O:28][CH3:29])=[CH:24][CH:23]=1)[C:16](=[O:30])[N:15]2[C:31]1[CH:32]=[C:33]([CH:37]=[CH:38][CH:39]=1)[C:34]([OH:36])=O.C(Cl)CCl.C1C=CC2N(O)N=NC=2C=1.[N:57]1([C:63]([O:65][C:66]([CH3:69])([CH3:68])[CH3:67])=[O:64])[CH2:62][CH2:61][NH:60][CH2:59][CH2:58]1.CCN(C(C)C)C(C)C>C1COCC1>[F:1][C:2]1[CH:7]=[C:6]([I:8])[CH:5]=[CH:4][C:3]=1[NH:9][C:10]1[N:11]([CH3:42])[C:12](=[O:41])[C:13]([CH3:40])=[C:14]2[C:19]=1[C:18](=[O:20])[N:17]([CH2:21][C:22]1[CH:23]=[CH:24][C:25]([O:28][CH3:29])=[CH:26][CH:27]=1)[C:16](=[O:30])[N:15]2[C:31]1[CH:32]=[C:33]([CH:37]=[CH:38][CH:39]=1)[C:34]([N:60]1[CH2:59][CH2:58][N:57]([C:63]([O:65][C:66]([CH3:69])([CH3:68])[CH3:67])=[O:64])[CH2:62][CH2:61]1)=[O:36]

Participants

7

Reactant 5

HCID 111,2-DichloroethaneHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 143452tert-Butyl piperazine-1-carboxylateHCID 898280673-(5-((2-fluoro-4-iodophenyl)amino)-3-(4-methoxybenzyl)-6,8-dimethyl-2,4,7-trioxo-3,4,6,7-tetrahydropyrido[4,3-d]pyrimidin-1(2H)-yl)benzoic acid

Product 1

HCID 89828068tert-butyl 4-(3-(5-((2-fluoro-4-iodophenyl)amino)-3-(4-methoxybenzyl)-6,8-dimethyl-2,4,7-trioxo-3,4,6,7-tetrahydropyrido[4,3-d]pyrimidin-1(2H)-yl)benzoyl)piperazine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

To a stirred solution of 3-(5-((2-fluoro-4-iodophenyl)amino)-3-(4-methoxybenzyl)-6,8-dimethyl-2,4,7-trioxo-3,4,6,7-tetrahydropyrido[4,3-d]pyrimidin-1(2H)-yl)benzoic acid (1 g, 1.465 mmol), EDC (0.421 g, 2.198 mmol), HOBT (0.337 g, 2.198 mmol) and tert-butyl piperazine-1-carboxylate (0.409 g, 2.198 mmol) in THF (5 ml); cooled to 0° C., was added Hunig's base (0.512 ml, 2.93 mmol). The resulting mixture was stirred under N2 atm for 2 h at room temperature. The solvent was evaporated in vacuo and the residue was partitioned between ethyl acetate (25 ml) and water (25 ml). The organic phase was separated and aq. phase was re-extracted with ethyl acetate. The combined organic layers were dried over sodium sulphate and evaporated in vacuo to obtain crude product, which was carried forward for the next step without further purification.

Workup

  1. customThe solvent was evaporated in vacuo
  2. customthe residue was partitioned between ethyl acetate (25 ml) and water (25 ml)
  3. customThe organic phase was separated
  4. extractionaq. phase was re-extracted with ethyl acetate
  5. dry with materialThe combined organic layers were dried over sodium sulphate
  6. customevaporated in vacuo
  7. customto obtain crude product, which
  8. customwas carried forward for the next step without further purification

Sources & evidence

ORD record
ord-699864b406394eb98d658766c3c4049f
Source dataset
uspto-grants-2016_08
Patent number
US09428499B2

Reaction notes

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