Triethylamine → (9-(7-Hydroxyheptyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(5-isopropylthiophen-3-yl)methanone

HRID 471320Notes

Reaction equation

Br[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][OH:9].[CH:10]([C:13]1[S:17][CH:16]=[C:15]([C:18]([N:20]2[CH2:25][C:24]3([CH2:30][CH2:29][NH:28][CH2:27][CH2:26]3)[O:23][CH2:22][CH2:21]2)=[O:19])[CH:14]=1)([CH3:12])[CH3:11].C(N(CC)CC)C>C(#N)C>[OH:9][CH2:8][CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2][N:28]1[CH2:29][CH2:30][C:24]2([O:23][CH2:22][CH2:21][N:20]([C:18]([C:15]3[CH:14]=[C:13]([CH:10]([CH3:11])[CH3:12])[S:17][CH:16]=3)=[O:19])[CH2:25]2)[CH2:26][CH2:27]1

Participants

Conditions

Temperature: 60 °C

Procedure

A solution of 7-bromo-1-heptanol (380 mg) in acetonitrile (3.9 mL) was added to a solution of (5-isopropylthiophen-3-yl)(1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)methanone (Example 275, step i) (400 mg) and triethylamine (0.361 mL) in acetonitrile (8.6 mL). The resulting mixture was stirred at 60° C. for 16 hours. The solvent was removed under vacuum and the residue taken up in DCM (25 mL) and washed with brine (25 mL) and water (20 mL), then dried over sodium sulphate, filtered and evaporated. Purification was by silica gel chromatography eluting with 0 to 10% methanol in DCM to afford the subtitled compound as a pale brown solid. Yield 0.305 g.

Workup

customThe solvent was removed under vacuum
washwashed with brine (25 mL) and water (20 mL)
dry with materialdried over sodium sulphate
filtrationfiltered
customevaporated
customPurification
washeluting with 0 to 10% methanol in DCM

Sources & evidence

ORD record: ord-b8c7a76da39547c496ef3fd5240a090b
Source dataset: uspto-grants-2014_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08629271B2

Reaction notes

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