Diisopropylethylamine → (1R,2S)-ethyl 1-((2S,4R)-1-((S)-5-(allyloxy)-2-(tert-butoxycarbonylamino)pentanoyl)-4-hydroxypyrrolidine-2-carboxamido)-2-vinylcyclopropanecarboxylate

https://huagongshe.com/reaction/1171950

Beteiligte Stoffe

Rolle	Name	HCID	Einwaage
Edukt	Diisopropylethylamine	HCID 81531	—
Edukt	Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 9886157	—
Edukt	N-Boc-5-(2-propen-1-yloxy)-L-norvaline	HCID 21080138	—
Edukt	(1R,2S)-ethyl 1-((3R,5S)-3-hydroxypyrrolidine-5-carboxamido)-2-vinylcyclopropanecarboxylate hydrochloride	HCID 67330424	—
Lösungsmittel	Water	HCID 962	—
Lösungsmittel	Toluene	HCID 1140	—
Lösungsmittel	Acetonitrile	HCID 6342	—
Lösungsmittel	Ethyl Acetate	HCID 8857	—
Produkt	(1R,2S)-ethyl 1-((2S,4R)-1-((S)-5-(allyloxy)-2-(tert-butoxycarbonylamino)pentanoyl)-4-hydroxypyrrolidine-2-carboxamido)-2-vinylcyclopropanecarboxylate	HCID 70295348	—

Reaktionsschritte

(1R,2S)-ethyl-1-((2S,4R)-4-hydroxypyrrolidine-2-carboxamido)-2-vinylcyclopropanecarboxylate hydrochloride salt (WO2005095403) (2.44 g, 7.76 mmol), (S)-5-(allyloxy)-2-(tert-butoxycarbonylamino)-pentanoic acid (WO2004094452) (2.02 g, 7.39 mmol) and HATU (3.09 g, 8.13 mmol) in toluene (36 mL) and ACN (4 mL) was added DIEA (2.58 mL, 14.78 mmol) at 0° C. The reaction warmed to rt and stirred at rt for 1 hr. Ethyl acetate (30 mL) and water (20 mL) was added. The organic layer was separated and washed with brine, dried over sodium sulfate. After removal of solvent, the residue was purified by chromatography (Ethyl acetate) to give (1R,2S)-ethyl 1-((2S,4R)-1-((S)-5-(allyloxy)-2-(tert-butoxycarbonylamino)pentanoyl)-4-hydroxypyrrolidine-2-carboxamido)-2-vinylcyclopropanecarboxylate as white wax solid (3.55 g, 92%). MS: Calcd.: 523; Found: [M+H]+ 524.

Herkunft & Nachweise

DOI	10.6084/m9.figshare.5104873.v1
Patentnummer	US07829665B2
Quelldatensatz	uspto-grants-2010_11
ORD ID	ord-94e0e623d53c406f99a91d69fa890b26
Quellennotiz	uspto-grants-2010_11