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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 237858Generated: November 4, 2026

Ethyl pent-2-yn-1-oate → (S)-5-Ethyl-2-[4-(1,1,3,3-tetramethyl-butyl)-phenoxymethyl]-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-one

https://huagongshe.com/reaction/237858

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl pent-2-yn-1-oateHCID 99169—
Reactant(S)-5-(4-(1,1,3,3-tetramethyl-butyl)-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamineHCID 68529278—
SolventChloroformHCID 6212—
Product(S)-5-Ethyl-2-[4-(1,1,3,3-tetramethyl-butyl)-phenoxymethyl]-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-oneHCID 25069826—

Reaction Steps

The title compound was prepared from (S)-5-(4-(1,1,3,3-tetramethyl-butyl) -phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine (see Example 27) and pent-2-ynoic acid ethyl ester employing the procedure described in Example 95. [α]D25 −21.00 (c 0.5, CHCl3).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08642603B2
Source datasetuspto-grants-2014_02
ORD IDord-98cc154b70764fdb85d8df7d0ec15591
Source noteuspto-grants-2014_02