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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1689375Generated: October 30, 2026

Triethylamine → Benzo[b]thiophen-5-yl(9-(2-fluoro-3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)methanone

https://huagongshe.com/reaction/1689375

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant1-Benzothiophene-5-carboxylic acidHCID 2795444—
ReactantMethanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 9886157—
Reactant2-(3-(1-Oxa-4,9-diazaspiro[5.5]undecan-9-ylmethyl)-2-fluorophenyl)ethanolHCID 57989187—
SolventDimethylformamideHCID 6228—
ProductBenzo[b]thiophen-5-yl(9-(2-fluoro-3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)methanoneHCID 57988983—

Reaction Steps

HATU (0.181 g) was added in one portion to a stirred solution at 0° C. of benzo[b]thiophene-5-carboxylic acid (0.065 g) and 2-(3-(1-oxa-4,9-diazaspiro[5.5]undecan-9-ylmethyl)-2-fluorophenyl)ethanol (example 67, step f) (0.113 g) and triethylamine (0.153 mL) in DMF (5 mL). The reaction mixture was stirred at room temperature for 2 hours. The mixture was partitioned between ethyl acetate and brine, the organic layer was washed twice with brine, dried over sodium sulphate, filtered and the solvent evaporated under reduced pressure to afford the subtitled compound. Yield 0.160 g.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08148373B2
Source datasetuspto-grants-2012_04
ORD IDord-646d31bb365f467aaa00012819d2a83a
Source noteuspto-grants-2012_04