Triethylamine → PharmaGSID_48509

HRID 988295Notes

Reaction equation

HRID 988295 reaction equation
[CH3:1][O:2][C:3]1[CH:12]=[C:11]2[C:6]([CH2:7][CH2:8][C@@H:9]([N:13]([CH:17]3[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]3)[CH2:14][CH2:15][CH3:16])[CH2:10]2)=[CH:5][CH:4]=1.C(OC([N:30]1[CH2:35][CH2:34][CH:33]([C:36](O)=[O:37])[CH2:32][CH2:31]1)=O)(C)(C)C.CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.C(N(CC)CC)C>ClCCl>[CH3:1][O:2][C:3]1[CH:12]=[C:11]2[C:6]([CH2:7][CH2:8][C@@H:9]([N:13]([CH2:14][CH2:15][CH3:16])[CH:17]3[CH2:18][CH2:19][N:20]([C:36]([CH:33]4[CH2:34][CH2:35][NH:30][CH2:31][CH2:32]4)=[O:37])[CH2:21][CH2:22]3)[CH2:10]2)=[CH:5][CH:4]=1

Participants

7

Reactant 5

HCID 8471TriethylamineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 3928711-(tert-Butoxycarbonyl)-4-piperidinecarboxylic acidHCID 59101536((r)-7-Methoxy-1,2,3,4-tetrahydro-naphthalen-2-yl)-piperidin-4-yl-propyl-amine

Product 1

HCID 10287749PharmaGSID_48509Yield 104.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Under an inert atmosphere was combined ((R)-7-methoxy-1,2,3,4-tetrahydro-naphthalen-2-yl)-piperidin-4-yl-propyl-amine (7.0 g, 23.14 mmol), piperidine-1,4-dicarboxylic acid mono-tert-butyl ester (5.3 g, 23.14 mmol), EDCI (4.43 g, 23.14 mmol), HOBT (3.13 g, 23.14 mmol), and triethylamine (65 mL, 46.3 mmol) in dichloromethane (140 mL). The mixture was stirred at room temperature for 48 h then concentrated in vacuo. The residue was taken-up in EtOAc (150 mL) and washed with water (100 mL), 1N NaOH (30 mL), and brine (30 mL), then dried (MgSO4). The solution was filtered, and concentrated. This was flash chromatographed on silica gel eluting with 20% acetone in hexanes to afford the protected amine (10.0 g), which was deprotected with 10 mL trifluoroacetic acid as described herein to afford {4-[((R)-7-methoxy-1,2,3,4-tetrahydro-naphthalen-2-yl)-propyl-amino]-piperidin-1-yl}-piperidin-4-yl-methanone 39 (6.5 g ), [M+H]+=450.

Workup

  1. concentrationthen concentrated in vacuo
  2. washwashed with water (100 mL), 1N NaOH (30 mL), and brine (30 mL)
  3. dry with materialdried (MgSO4)
  4. filtrationThe solution was filtered
  5. concentrationconcentrated
  6. customThis was flash chromatographed on silica gel eluting with 20% acetone in hexanes

Sources & evidence

ORD record
ord-626f0adc696d42afbae267c1d18f17a9
Source dataset
uspto-grants-2003_10
Patent number
US06635658B2

Reaction notes

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