Ethanol → 4-{4-[4-(3-Pyrrolidin-1-yl propoxy)phenyl]tetrahydropyran-4-ylmethyl}piperazine-1-carboxylic acid amide

HRID 272876

Reaction equation

HRID 272876 reaction equation
[N:1]1([CH2:6][CH2:7][CH2:8][O:9][C:10]2[CH:15]=[CH:14][C:13]([C:16]3([CH:22]=O)[CH2:21][CH2:20][O:19][CH2:18][CH2:17]3)=[CH:12][CH:11]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.Cl.[N:25]1([C:31]([NH2:33])=[O:32])[CH2:30][CH2:29][NH:28][CH2:27][CH2:26]1.C(O)C>CC(C)[O-].[Ti+4].CC(C)[O-].CC(C)[O-].CC(C)[O-].CCN(CC)CC>[N:1]1([CH2:6][CH2:7][CH2:8][O:9][C:10]2[CH:11]=[CH:12][C:13]([C:16]3([CH2:22][N:28]4[CH2:29][CH2:30][N:25]([C:31]([NH2:33])=[O:32])[CH2:26][CH2:27]4)[CH2:17][CH2:18][O:19][CH2:20][CH2:21]3)=[CH:14][CH:15]=2)[CH2:2][CH2:3][CH2:4][CH2:5]1

Participants

6

Reactant 3

HCID 702EthanolHCID 2769700Piperazine-1-carboxamide HydrochlorideHCID 598374274-[4-(3-pyrrolidin-1-ylpropoxy)phenyl]tetrahydro-2H-pyran-4-carbaldehyde

Product 1

HCID 598374454-{4-[4-(3-Pyrrolidin-1-yl propoxy)phenyl]tetrahydropyran-4-ylmethyl}piperazine-1-carboxylic acid amide

Reagents, catalysts & solvents 2

HCID 11026Titanium isopropoxideCatalystHCID 8471TriethylamineSolvent

Procedure

4-[4-(3-Pyrrolidin-1-ylpropoxy)phenyl]tetrahydro-2H-pyran-4-carbaldehyde (317 mg, 1 mmol), piperazine-1-carboxylic acid amide hydrochloride (273 mg, 1.65 mmol), absolute ethanol (12.7 ml), activated 3 Å molecular sieves (320 mg), Et3N (0.278 ml), titanium (IV) isopropoxide (1.46 ml, 5.20 mmol) and STAB (1.8 g, 8.5 mmol) were reacted in accordance with the general procedure D. The isolated crude product was purified by column chromatography on silica eluting with DCM:MeOH:NH3 (98:1:1) to give the title compound as a off white solid (70 mg, 16%). 1H NMR (400 MHz, CDCl3) δ 7.21 (d, 2H), 6.86 (d, 2H), 4.30 (br s, 2H), 4.02 (t, 2H), 3.80-3.71 (m, 2H), 3.58-3.48 (m, 2H), 3.23-3.15 (m, 4H), 2.63 (t, 2H), 2.53 (br s, 4H), 2.40 (s, 2H), 2.19-1.73 (m, 14H).

Workup

  1. customThe isolated crude product
  2. customwas purified by column chromatography on silica eluting with DCM:MeOH:NH3 (98:1:1)

Sources & evidence

ORD record
ord-9a6e07058fb84f159ef7d6c3636d8e19
Source dataset
uspto-grants-2008_11
Patent number
US07456164B2

Linked notes

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