Acetyl chloride → (5R,7R)-4-(4-(acetamidomethyl)-1'-benzylspiro[indoline-3,4'-piperidine]-1-yl)-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-yl 4-nitrobenzoate

HRID 2190045Notes

Reaction equation

HRID 2190045 reaction equation
Cl.Cl.Cl.[N+:4]([C:7]1[CH:48]=[CH:47][C:10]([C:11]([O:13][C@H:14]2[C:18]3[N:19]=[CH:20][N:21]=[C:22]([N:23]4[C:43]5[C:38](=[C:39]([CH2:44][NH2:45])[CH:40]=[CH:41][CH:42]=5)[C:25]5([CH2:30][CH2:29][N:28]([CH2:31][C:32]6[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=6)[CH2:27][CH2:26]5)[CH2:24]4)[C:17]=3[C@H:16]([CH3:46])[CH2:15]2)=[O:12])=[CH:9][CH:8]=1)([O-:6])=[O:5].CCN(CC)CC.[C:56](Cl)(=[O:58])[CH3:57]>C(Cl)Cl>[N+:4]([C:7]1[CH:8]=[CH:9][C:10]([C:11]([O:13][C@H:14]2[C:18]3[N:19]=[CH:20][N:21]=[C:22]([N:23]4[C:43]5[C:38](=[C:39]([CH2:44][NH:45][C:56](=[O:58])[CH3:57])[CH:40]=[CH:41][CH:42]=5)[C:25]5([CH2:30][CH2:29][N:28]([CH2:31][C:32]6[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=6)[CH2:27][CH2:26]5)[CH2:24]4)[C:17]=3[C@H:16]([CH3:46])[CH2:15]2)=[O:12])=[CH:47][CH:48]=1)([O-:6])=[O:5]

Participants

5

Reactant 3

HCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 69812752(5R,7R)-4-(4-(aminomethyl)-1'-benzylspiro[indoline-3,4'-piperidine]-1-yl)-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-yl 4-nitrobenzoate trihydrochloride

Product 1

HCID 69811912(5R,7R)-4-(4-(acetamidomethyl)-1'-benzylspiro[indoline-3,4'-piperidine]-1-yl)-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-yl 4-nitrobenzoateYield 103.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
0 °C

Procedure

To a stirred solution of (5R,7R)-4-(4-(aminomethyl)-1′-benzylspiro[indoline-3,4′-piperidine]-1-yl)-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-yl 4-nitrobenzoate trihydrochloride (30 mg, 0.042 mmol) and Et3N (0.034 mL, 0.19 mmol) in DCM (1 mL) was added acetyl chloride (0.0033 mL, 0.046 mmol) at about 0° C. under N2. The reaction was stirred at about 0° C. for about 30 minutes and diluted with DCM. The reaction mixture was washed with saturate aqueous NaHCO3 solution and brine, dried and concentrated. The residue was purified by flash chromatography on silica gel (2% MeOH/DCM) to give (5R,7R)-4-(4-(acetamidomethyl)-1′-benzylspiro[indoline-3,4′-piperidine]-1-yl)-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-yl 4-nitrobenzoate (28 mg, 68%) as an oil. LCMS (APCI+) m/z 647 [M+H]+; Rt=3.21 min.

Workup

  1. washThe reaction mixture was washed with saturate aqueous NaHCO3 solution and brine
  2. customdried
  3. concentrationconcentrated
  4. customThe residue was purified by flash chromatography on silica gel (2% MeOH/DCM)

Sources & evidence

ORD record
ord-b2c04abb8f2e4bbc9edff465c2d42799
Source dataset
uspto-grants-2012_12
Patent number
US08324221B2

Reaction notes

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