Triethylamine → (9-(9-Hydroxynonyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(5-methylthiophen-3-yl)methanone

HRID 471248Notes

Reaction equation

Br[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][OH:11].[CH3:12][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.C(N(CC)CC)C>C(#N)C>[OH:11][CH2:10][CH2:9][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]([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 9-bromo-1-nonanol (0.335 g) in acetonitrile (3 mL) was added to a solution of (5-methylthiophen-3-yl)(1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)methanone (example 104, step b) (0.28 g) and triethylamine (0.278 mL) in acetonitrile (7 mL). The resulting mixture was stirred at 60° C. overnight. The reaction mixture was evaporated in vacuo and the residue was taken up into DCM (30 mL), washed with brine (2×15 mL), dried over sodium sulphate, filtered and evaporated in vacuo. Purification was by silica gel chromatography eluting with 0-10% methanol in dichloromethane to give the subtitled compound as a white solid. Yield 0.3 g.

Workup

customThe reaction mixture was evaporated in vacuo
washwashed with brine (2×15 mL)
dry with materialdried over sodium sulphate
filtrationfiltered
customevaporated in vacuo
customPurification
washeluting with 0-10% methanol in dichloromethane

Sources & evidence

ORD record: ord-7a3367728c754fed946e6e9b8edf01a7
Source dataset: uspto-grants-2014_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08629271B2

Reaction notes

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