1,2,3,4-Tetrahydroisoquinoline → HCID 10194516, compound

HRID 2416115Notes

Reaction equation

HRID 2416115 reaction equation
[CH3:1][N:2]1[C:10]([C:11](O)=[O:12])=[C:9]2[C:4]([N:5]([C:14]3[C:19]([CH3:20])=[CH:18][C:17]([CH3:21])=[CH:16][C:15]=3[CH3:22])[CH2:6][CH2:7][CH2:8]2)=[N:3]1.O.ON1C2C=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.[CH2:46]1[C:55]2[C:50](=[CH:51][CH:52]=[CH:53][CH:54]=2)[CH2:49][CH2:48][NH:47]1>ClCCl.C(OCC)(=O)C.C(N(CC)CC)C>[CH2:46]1[C:55]2[C:50](=[CH:51][CH:52]=[CH:53][CH:54]=2)[CH2:49][CH2:48][N:47]1[C:11]([C:10]1[N:2]([CH3:1])[N:3]=[C:4]2[C:9]=1[CH2:8][CH2:7][CH2:6][N:5]2[C:14]1[C:15]([CH3:22])=[CH:16][C:17]([CH3:21])=[CH:18][C:19]=1[CH3:20])=[O:12]

Participants

8

Reactant 4

HCID 70461,2,3,4-TetrahydroisoquinolineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 22136260HCID 22136260, compound

Product 1

HCID 10194516HCID 10194516, compound

Reagents, catalysts & solvents 3

HCID 6344DichloromethaneSolventHCID 8471TriethylamineSolventHCID 8857Ethyl AcetateSolvent

Procedure

A suspension of 125 mg of 2-methyl-7-(2,4,6-trimethylphenyl)-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-3-carboxylic acid in 5 mL of dichloromethane was treated with 116 μL of triethylamine, 56 mg of 1-hydroxybenzotriazole hydrate, 88 mg of 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride, and 52 μL of 1,2,3,4-tetrahydroisoquinoline and stirred under an atmosphere of nitrogen at room temperature for 20 h. The mixture was diluted with 50 mL of ethyl acetate, washed with 30 mL of 0.5M HCl, washed with 30 mL of saturated sodium bicarbonate solution, dried over magnesium sulfate, and evaporated to dryness yielding 149 mg of (3,4-dihydro-1H-isoquinolin-2-yl)[2-methyl-7-(2,4,6-trimethylphenyl)-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridin-3-yl]methanone, mp 80.3-87.7° C.

Workup

  1. washwashed with 30 mL of 0.5M HCl
  2. washwashed with 30 mL of saturated sodium bicarbonate solution
  3. dry with materialdried over magnesium sulfate
  4. customevaporated to dryness

Sources & evidence

ORD record
ord-5ed4904f8c5d48b1a5e97744daa9e89f
Source dataset
uspto-grants-2004_11
Patent number
US06821984B2

Reaction notes

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