Dichloromethane → Ammonia dichloromethane

HRID 33719

Reaction equation

HRID 33719 reaction equation
[N:1]1([CH2:7][CH2:8][CH2:9][O:10][C:11]2[CH:18]=[CH:17][C:14]([CH:15]=O)=[CH:13][CH:12]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[C:19]1([CH:25]=[CH:26][CH2:27][N:28]2[CH2:33][CH2:32][NH:31][CH2:30][CH2:29]2)[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].[OH-].[Na+].[CH2:50]([Cl:52])[Cl:51]>C(O)(=O)C>[NH3:1].[CH2:50]([Cl:52])[Cl:51].[C:19]1([CH:25]=[CH:26][CH2:27][N:28]2[CH2:29][CH2:30][N:31]([CH2:15][C:14]3[CH:17]=[CH:18][C:11]([O:10][CH2:9][CH2:8][CH2:7][N:1]4[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]4)=[CH:12][CH:13]=3)[CH2:32][CH2:33]2)[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1

Participants

8

Reactant 5

HCID 6344DichloromethaneHCID 14798Sodium HydroxideHCID 86803CinnamylpiperazineHCID 27663244-(3-Piperidin-1-ylpropoxy)benzaldehydeHCID 5049666Sodium triacetoxyborohydride

Product 2

HCID 22731429Ammonia dichloromethaneYield 1%HCID 687003271-(3-Phenyl-allyl)-4-[4-(3-piperidin-1-yl-propoxy)-benzyl]-piperazine

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

A solution of the product of Example 9 (215 mg), 1-(3-phenyl-allyl)-piperazine (176 mg), and acetic acid (0.06 mL) in DCM (3 mL) was treated with sodium triacetoxyborohydride (290 mg). After 16 h, the resulting mixture was treated with 10% sodium hydroxide (5 mL) and extracted with DCM (3×10 mL). The combined organic phases were dried (sodium sulfate) and evaporated. Chromatography of the residue (1-5% 2 M methanolic ammonia/DCM) gave the title compound as a colorless oil (303 mg). 1H NMR (400 MHz, CDCl3): 7.36 (m, 2H), 7.30 (m, 2H), 7.24-7.18 (m, 3H), 6.83 (d, J=8.6 Hz, 2H), 6.51 (d, J=15.9 Hz, 1H), 6.31-6.23 (m, 1H), 3.98 (t, J=6.3 Hz, 2H), 3.45 (s, 2H), 3.15 (m, 2H), 2.60-2.32 (m, 12H), 1.67 (br, 1H), 1.62-1.56 (m, 4H), 1.47-1.40 (m, 2H).

Workup

  1. extractionextracted with DCM (3×10 mL)
  2. dry with materialThe combined organic phases were dried (sodium sulfate)
  3. customevaporated

Sources & evidence

ORD record
ord-5de666f16e254fc8bd262fb45bcb67aa
Source dataset
uspto-grants-2008_09
Patent number
US07429586B2

Linked notes

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