4-Chloro-2,6-dimethoxypyrimidine → HCID 67147560, compound

HRID 2426553Notes

Reaction equation

HRID 2426553 reaction equation
Cl[C:2]1[CH:7]=[C:6]([O:8][CH3:9])[N:5]=[C:4]([O:10][CH3:11])[N:3]=1.[C:12]([O:16][C:17]([N:19]1[CH2:24][CH2:23][CH:22]([NH2:25])[CH2:21][CH2:20]1)=[O:18])([CH3:15])([CH3:14])[CH3:13].C(N(C(C)C)C(C)C)C>C(#N)C.CC(N(C)C)=O>[C:12]([O:16][C:17]([N:19]1[CH2:24][CH2:23][CH:22]([NH:25][C:2]2[CH:7]=[C:6]([O:8][CH3:9])[N:5]=[C:4]([O:10][CH3:11])[N:3]=2)[CH2:21][CH2:20]1)=[O:18])([CH3:15])([CH3:13])[CH3:14]

Participants

6

Reactant 3

HCID 806004-Chloro-2,6-dimethoxypyrimidineHCID 81531DiisopropylethylamineHCID 12682914-Amino-1-Boc-piperidine

Product 1

HCID 67147560HCID 67147560, compound

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 31374DimethylacetamideSolvent

Procedure

A solution of 4-chloro-2,6-dimethoxy-pyrimidine (1.92 g, 11.0 mmol, 1.0 equiv; commercially available), 4-amino-piperidine-1-carboxylic acid tert-butyl ester (2.64 g, 13.20 mmol, 1.2 equiv) and N-ethyl diisopropylamine (2.24 mL, 1.71 g, 13.20 mmol, 1.2 equiv) in acetonitrile (8 mL) and DMAc (2 mL) was heated by microwave irradiation to 160° C. for 1 h and then to 180° C. for 30 min. The reaction mixture was concentrated under reduced pressure and the crude material purified by silica column chromatography using a MPLC system (CombiFlash Companion, Isco Inc.) eluting with a gradient of heptane/ethyl acetate providing 1.22 g (33%) of the title compound. 1H NMR (300 MHz, CDCl3): δ1.39-1.48 (m, 2H), 1.46 (s, 9H), 1.97-2.00 (m, 2H), 2.85-2.96 (m, 2H), 3.86 (s, 3H), 3.89 (s, 3H), 3.96-4.02 (m, 3H), 5.52 (d, J=7.9 Hz, 1H). 13C NMR (75 MHz, CDCl3): δ28.16, 31.48, 42.39, 47.95, 53.12, 53.76, 79.24, 100.51, 154.40, 164.60, 164.99, 171.52. MS (ISP): 339.4 [M+H]+.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. customthe crude material purified by silica column chromatography
  3. washeluting with a gradient of heptane/ethyl acetate providing 1.22 g (33%) of the title compound

Sources & evidence

ORD record
ord-57b08975da814836a83296c3e5d45e1b
Source dataset
uspto-grants-2011_06
Patent number
US07968568B2

Reaction notes

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