Carbon tetrabromide → Ethyl 1-{2-[5-(4-isobutylphenyl)-1,2,4-oxadiazol-3-yl]-4,5,6,7-tetrahydro-1-benzothien-4-yl}-azetidine-3-carboxylate

HRID 2247672Notes

Reaction equation

HRID 2247672 reaction equation
[CH2:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[O:15][N:14]=[C:13]([C:16]3[S:17][C:18]4[CH2:24][CH2:23][CH2:22][CH:21](O)[C:19]=4[CH:20]=3)[N:12]=2)=[CH:7][CH:6]=1)[CH:2]([CH3:4])[CH3:3].C(Br)(Br)(Br)Br.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.Cl.[NH:51]1[CH2:54][CH:53]([C:55]([O:57][CH2:58][CH3:59])=[O:56])[CH2:52]1.C(N(CC)C(C)C)(C)C>>[CH2:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[O:15][N:14]=[C:13]([C:16]3[S:17][C:18]4[CH2:24][CH2:23][CH2:22][CH:21]([N:51]5[CH2:54][CH:53]([C:55]([O:57][CH2:58][CH3:59])=[O:56])[CH2:52]5)[C:19]=4[CH:20]=3)[N:12]=2)=[CH:7][CH:6]=1)[CH:2]([CH3:3])[CH3:4]

Participants

6

Reactant 5

HCID 11205Carbon tetrabromideHCID 11776TriphenylphosphineHCID 81531DiisopropylethylamineHCID 44828820Ethyl azetidine-3-carboxylate hydrochlorideHCID 685210992-[5-(4-Isobutylphenyl)-1,2,4-oxadiazol-3-yl]-4,5,6,7-tetrahydro-1-benzothiophen-4-ol

Product 1

HCID 68520759Ethyl 1-{2-[5-(4-isobutylphenyl)-1,2,4-oxadiazol-3-yl]-4,5,6,7-tetrahydro-1-benzothien-4-yl}-azetidine-3-carboxylate

Procedure

The crude product of the title compound was synthesized by conducting the similar reaction to that mentioned in Example 1 (1f) using 2-[5-(4-isobutylphenyl)-1,2,4-oxadiazol-3-yl]-4,5,6,7-tetrahydro-1-benzothiophen-4-ol (92 mg, 0.26 mmol) that was obtained in Example 8 (8f), carbon tetrabromide (0.10 g, 0.31 mmol), triphenylphosphine (81 mg, 0.31 mmol), ethyl 3-azetidinecarboxylate hydrochloride (65 mg, 0.39 mmol), and N,N-diisopropylethylamine (0.14 ml, 0.78 mmol). Subsequently, the crude product of the title compound thus obtained was purified by chromatography on a silica gel column using a mixed solvent of ethyl acetate and hexane (1:1 to 2:1) as the eluent to afford the title compound (44 mg) in a yield of 36% as a colourless oily product.

Workup

  1. customthe similar reaction to

Sources & evidence

ORD record
ord-cdfcfc83f7e541d7af894d43b71cf041
Source dataset
uspto-grants-2010_03
Patent number
US07687491B2

Reaction notes

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