Diisopropylethylamine → HCID 178452087, compound

HRID 2242989Notes

Reaction equation

HRID 2242989 reaction equation
Cl[C:2]1[N:10]=[CH:9][N:8]=[C:7]2[C:3]=1[N:4]=[CH:5][NH:6]2.[C:11]([O:15][C:16]([N:18]1[CH2:23][CH2:22][CH:21]([NH2:24])[CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12].C(N(C(C)C)C(C)C)C>C(#N)C>[C:11]([O:15][C:16]([N:18]1[CH2:23][CH2:22][CH:21]([NH:24][C:2]2[N:10]=[CH:9][N:8]=[C:7]3[C:3]=2[N:4]=[CH:5][NH:6]3)[CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:12])[CH3:13]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 12682914-Amino-1-Boc-piperidineHCID 178478393HCID 178478393, compound

Product 1

HCID 178452087HCID 178452087, compoundYield 36%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A solution of 6-chloro-9H-purine (1.19 g, 7.68 mmol, 1.0 equiv; commercially available), 4-amino-piperidine-1-carboxylic acid tert-butyl ester (2.0 g, 10.0 mmol, 1.3 equiv) and N-ethyl diisopropylamine (3.0 mL, 2.3 g, 17.7 mmol, 2.3 equiv) in acetonitrile (16 mL) was heated by microwave irradiation to 160° C. for 20 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. Suspension of the pre-purified material in ethyl acetate and filtration provided 0.89 g (36%) of the title compound. 1H NMR (300 MHz, DMSO): δ1.31-1.43 (m, 2H), 1.40 (s, 9H), 1.87-1.90 (m, 2H), 2.74-2.88 (m, 2H), 3.92-3.96 (m, 2H), 4.32 (br s, 1H), 7.52 (br s, 1H), 8.08 (s, 1H), 8.18 (s, 1H). MS (ISP): 319.3 [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
  4. additionSuspension of the pre-purified material in ethyl acetate
  5. filtrationfiltration

Sources & evidence

ORD record
ord-0cfb7adde0ac4cb59f93e6e8c6147ff1
Source dataset
uspto-grants-2010_03
Patent number
US07674804B2

Reaction notes

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