Benzyl Bromide → 1-Benzyl-4-[3-methyl-1-(3-phenyl-propyl)-1H-indole-6-yl]-pyrrolidine-2-one

HRID 380404Notes

Reaction equation

HRID 380404 reaction equation
[H-].[Na+].[CH3:3][C:4]1[C:12]2[C:7](=[CH:8][C:9]([CH:13]3[CH2:17][NH:16][C:15](=[O:18])[CH2:14]3)=[CH:10][CH:11]=2)[N:6]([CH2:19][CH2:20][CH2:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[CH:5]=1.[CH2:28](Br)[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1.CN1C(=O)N(C)CCC1>O1CCCC1>[CH2:28]([N:16]1[CH2:17][CH:13]([C:9]2[CH:8]=[C:7]3[C:12]([C:4]([CH3:3])=[CH:5][N:6]3[CH2:19][CH2:20][CH2:21][C:22]3[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=3)=[CH:11][CH:10]=2)[CH2:14][C:15]1=[O:18])[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1

Participants

6

Reactant 4

HCID 7498Benzyl BromideHCID 24758Sodium hydrideHCID 816462(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl-HCID 226634514-[3-methyl-1-(3-phenyl-propyl)-1H-indole-6-yl]-pyrrolidine-2-one

Product 1

HCID 226633041-Benzyl-4-[3-methyl-1-(3-phenyl-propyl)-1H-indole-6-yl]-pyrrolidine-2-oneYield 77.5%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

A solution of sodium hydride (0.013 g) in tetrahydrofuran at 0° C., under argon, was treated with a solution of 4-[3-methyl-1-(3-phenyl-propyl)-1H-indole-6-yl]-pyrrolidine-2-one (0.184 g, Example 20) and benzyl bromide (0.094 g) in dry tetrahydrofuran. The mixture was allowed to warm to room temperature then treated with N,N′-dimethylpropyleneurea (0.05 g). After stiffing at room temperature overnight the solution was partitioned between ethyl acetate (15 ml) and 1N hydrochloric acid (15 ml). The organic phase was dried over magnesium sulphate then evaporated. The residue was subjected to preparative layer chromatography on silica using a mixture of ethyl acetate and hexane (3:7, v/v) as eluent to yield the title compound (0.18 g) as an oil. [Elemental analysis:—C, 79.16; H,6.98; N, 6.14%. Calculated for C29H30N2O.H2O:—C,79.04; H,7.33; N,6.36%].

Workup

  1. customthe solution was partitioned between ethyl acetate (15 ml) and 1N hydrochloric acid (15 ml)
  2. dry with materialThe organic phase was dried over magnesium sulphate
  3. customthen evaporated
  4. additiona mixture of ethyl acetate and hexane (3:7, v/v) as eluent

Sources & evidence

ORD record
ord-ccee9c96a5064a01ace8faef7f53f81d
Source dataset
uspto-grants-2001_10
Patent number
US06303600B1

Reaction notes

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