2-Chloroethyl isocyanate → HCID 58997097, compound

HRID 251002Notes

Reaction equation

HRID 251002 reaction equation
[CH3:1][C:2]1[C:3]([CH2:9][N:10]([CH2:16][C:17]2[C:22]([CH:23]([CH3:25])[CH3:24])=[CH:21][CH:20]=[CH:19][N:18]=2)[CH2:11][CH2:12][CH2:13][CH2:14][NH2:15])=[N:4][CH:5]=[C:6]([CH3:8])[CH:7]=1.Cl[CH2:27][CH2:28][N:29]=[C:30]=[O:31].[H-].[Na+]>C(Cl)Cl.C1COCC1>[CH3:1][C:2]1[C:3]([CH2:9][N:10]([CH2:16][C:17]2[C:22]([CH:23]([CH3:25])[CH3:24])=[CH:21][CH:20]=[CH:19][N:18]=2)[CH2:11][CH2:12][CH2:13][CH2:14][N:15]2[CH2:27][CH2:28][NH:29][C:30]2=[O:31])=[N:4][CH:5]=[C:6]([CH3:8])[CH:7]=1

Participants

6

Reactant 3

HCID 160352-Chloroethyl isocyanateHCID 24758Sodium hydrideHCID 11186869HCID 11186869, compound

Product 1

HCID 58997097HCID 58997097, compoundYield 41.7%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a cold (0° C.) solution of N1-(3,5-Dimethyl-pyridin-2-ylmethyl)-N1-{3-isopropyl-pyridin-2-ylmethyl}-butane-1,4-diamine (163 mg, 0.48 mmol) in CH2Cl2 (5 mL) was added 2-chloroethylisocyanate (50 μL, 0.59 mmol) and the resultant mixture was stirred for 80 minutes then concentrated to provide a yellow oil. To a cold (0° C.) solution of the yellow oil in THF (5 mL) was added NaH (95% dry, 39 mg, 0.98 mmol). The cooling bath was removed and the resultant mixture was stirred at room temperature overnight. The mixture was treated with brine (10 mL) and extracted with CH2Cl2 (5×20 mL). The combined organic extracts were dried (Na2SO4) and concentrated. Purification of the crude material by column chromatography on silica gel (10:1:1 CH2Cl2-MeOH—NH4OH) followed by radial chromatography on silica gel (1 mm plate, 50:1:1 CH2Cl2-MeOH—NH4OH) provided 82 mg (41%) of COMPOUND 151 as a colorless oil. 1H NMR (CDCl3) δ 0.98 (d, 6H, J=6.9 Hz), 1.26-1.36 (m, 2H), 1.42-1.52 (m, 2H), 2.19 (s, 3H), 2.28 (s, 3H), 2.53 (dd, 2H, J=7.2, 7.2 Hz), 2.90-3.06 (m, 3H), 3.27-3.39 (m, 4H), 3.72 (s, 4H), 4.21 (br s, 1H), 7.—(dd, 1H, J=7.2, 4.8 Hz), 7.25 (s, 1H), 7.51 (dd, 1H, J=7.8, 1.5 Hz), 8.19 (s, 1H), 8.33 (dd, 1H, J=4.8, 1.5 Hz); 13C NMR (CDCl3) δ 18.27, 18.30, 23.51 (2 carbons), 24.36, 25.98, 27.46, 38.56, 43.75, 45.40, 54.47, 58.99, 59.59, 123.06, 132.12, 133.16, 133.61, 138.92, 144.24, 145.99, 146.57, 154.48, 156.29, 163.37; ES-MS m/z 410 (M+H). Anal. Calcd. For C24H35N5O.0.7H2O: C, 68.28; H, 8.69; N, 16.59. Found: C, 68.24; H, 8.52; N, 16.36.

Workup

  1. concentrationthen concentrated
  2. customto provide a yellow oil
  3. customThe cooling bath was removed
  4. additionThe mixture was treated with brine (10 mL)
  5. extractionextracted with CH2Cl2 (5×20 mL)
  6. dry with materialThe combined organic extracts were dried (Na2SO4)
  7. concentrationconcentrated
  8. customPurification of the crude material by column chromatography on silica gel (10:1:1 CH2Cl2-MeOH—NH4OH)

Sources & evidence

ORD record
ord-5afa284b928e43f9b050b72c57bb7c28
Source dataset
uspto-grants-2011_01
Patent number
US07863293B2

Reaction notes

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