Phenyl isocyanate → HCID 58770774, compound

HRID 657225Notes

Reaction equation

HRID 657225 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][C:12]=1[O:13][CH3:14])[N:9]=[CH:8][N:7]=[C:6]2[CH:15]1[CH2:20][CH2:19][NH:18][CH2:17][CH2:16]1.[N:21]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)=[C:22]=[O:23]>CN(C=O)C>[C:24]1([NH:21][C:22]([N:18]2[CH2:19][CH2:20][CH:15]([C:6]3[C:5]4[C:10](=[CH:11][C:12]([O:13][CH3:14])=[C:3]([O:2][CH3:1])[CH:4]=4)[N:9]=[CH:8][N:7]=3)[CH2:16][CH2:17]2)=[O:23])[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1

Participants

4

Reactant 2

HCID 7672Phenyl isocyanateHCID 595517346,7-Dimethoxy-4-(piperidin-4-yl)quinazoline

Product 1

HCID 58770774HCID 58770774, compoundYield 27%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 6,7-dimethoxy-4-piperidin-4-yl-quinazoline (30 mg, 0.110 mmol), as prepared in Example 1d, in DMF (1 mL) was treated with isocyanato-benzene (19.6 mg, 0.165 mmol) at RT overnight. The reaction was then partitioned between EtOAc (10 mL) and H2O (10 mL). The organic phase was dried over Na2SO4 and concentrated in vacuo. Purification by prep tlc (1:9 MeOH/DCM) afforded the title compound as a yellow solid (11.4 mg, 27%). 1H NMR (300 MHz, CDCl3) δ 9.09 (s, 1H), 7.37 (m, 6H), 7.06 (m, 1H), 6.42 (br s, NH), 4.31-4.27 (m, 2H), 4.08 (s, 6H), 3.62 (m, 1H), 3.19 (m, 2H), 2.17 (m, 2H), 2.04-1.98 (m, 2H); LC/MS (ESI): calcd mass 392.2, found 393.3 [M+1]+.

Workup

  1. customThe reaction was then partitioned between EtOAc (10 mL) and H2O (10 mL)
  2. dry with materialThe organic phase was dried over Na2SO4
  3. concentrationconcentrated in vacuo
  4. customPurification by prep tlc (1:9 MeOH/DCM)

Sources & evidence

ORD record
ord-7dd41db5d881408d960b6757b505976c
Source dataset
uspto-grants-2011_12
Patent number
US08071768B2

Reaction notes

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