Diisopropylethylamine → (4-tert-Butyl-phenyl)-[7-(3-methanesulfonyl-pyridin-2-yl)-5,6,7,8-tetrahydro-pyrido[3,4-d]pyrimidin-4-yl]-amine

HRID 2219921Notes

Reaction equation

HRID 2219921 reaction equation
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([NH:11][C:12]2[C:13]3[CH2:21][CH2:20][NH:19][CH2:18][C:14]=3[N:15]=[CH:16][N:17]=2)=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].Cl[C:23]1[C:28]([S:29]([CH3:32])(=[O:31])=[O:30])=[CH:27][CH:26]=[CH:25][N:24]=1.C(N(CC)C(C)C)(C)C>O>[C:1]([C:5]1[CH:10]=[CH:9][C:8]([NH:11][C:12]2[C:13]3[CH2:21][CH2:20][N:19]([C:23]4[C:28]([S:29]([CH3:32])(=[O:31])=[O:30])=[CH:27][CH:26]=[CH:25][N:24]=4)[CH2:18][C:14]=3[N:15]=[CH:16][N:17]=2)=[CH:7][CH:6]=1)([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 125137462-Chloro-3-(methanesulfonyl)pyridineHCID 59021490N-(4-tert-butylphenyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-amine

Product 1

HCID 12004320(4-tert-Butyl-phenyl)-[7-(3-methanesulfonyl-pyridin-2-yl)-5,6,7,8-tetrahydro-pyrido[3,4-d]pyrimidin-4-yl]-amineYield 48%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of N-(4-tert-butylphenyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-amine prepared as described in Example 3.A. (0.066 g, 0.23 mmol), 2-chloro-3-(methylsulfonyl)pyridine (Ponticello et al, J. Org. Chem., 44(17), 1979), (0.088 g, 0.47 mmol) and N,N-diisopropylethlamine (0.041 mL, 0.23 mmol) was heated in a sealed tube via microwave (Emrys Optimizer model, Personal Chemistry) for 30 min at 150° C. The reaction mixture was cooled to r.t. and poured into water (20 mL). The mixture was extracted with ethyl acetate (2×20 mL). The combined organic layers were washed with brine, dried over magnesium sulfate and concentrated to leave an oil which was purified by silica gel chromatography (ethyl acetate/hexane gradient) to give the title compound as a white solid (0.049 g, 48%).

Workup

  1. customprepared
  2. extractionThe mixture was extracted with ethyl acetate (2×20 mL)
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated
  6. customto leave an oil which
  7. customwas purified by silica gel chromatography (ethyl acetate/hexane gradient)

Sources & evidence

ORD record
ord-e9565755433a430393e5fe23b1b0ebb8
Source dataset
uspto-grants-2008_08
Patent number
US07414131B2

Reaction notes

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