HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2075715Generated: October 30, 2026
Diisopropylethylamine → 3-(1,2,3,9b-Tetraaza-cyclopenta[a]naphthalen-7-ylsulfanyl)-propionic acid 2-ethyl-hexyl ester
https://huagongshe.com/reaction/2075715
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | 2-Ethylhexyl 3-mercaptopropionate | HCID 92640 | — |
| Reactant | 1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) | HCID 636044 | — |
| Reactant | 7-Bromo-1,2,3,9b-tetraaza-cyclopenta[a]naphthalene | HCID 58257810 | — |
| Catalyst | Bis(dibenzylideneacetone)palladium | HCID 9811564 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Solvent | 1,4-Dioxane | HCID 31275 | — |
| Product | 3-(1,2,3,9b-Tetraaza-cyclopenta[a]naphthalen-7-ylsulfanyl)-propionic acid 2-ethyl-hexyl ester | HCID 67090686 | — |
Reaction Steps
9d (233 mg, 0.88 mmol) and 3-mercaptopropionic acid 2-ethylhexyl ester (86 mg, 0.38 mmol) were dissolved in 1,4-dioxane (10 mL) and degassed with N2 for 10 minutes. iPr2NEt (0.33 mL, 1.80 mmol) was added, followed by Pd2dba3 (20 mg, 0.02 mmol) and 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (23 mg, 0.04 mmol). The reaction was sealed and heated overnight at 130° C., and then cooled to room temperature and diluted with EtOAc and water. The organic layer was washed with water and brine, dried over MgSO4, filtered, and concentrated. The residue was purified by silica gel chromatography (0-20% MeOH in EtOAc) to give the desired product, 9e.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US07919621B2 |
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| Source dataset | uspto-grants-2011_04 |
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| ORD ID | ord-0deed5c071a04957aefbad4aa97c74eb |
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| Source note | uspto-grants-2011_04 |
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