HuagongsheHuagongshe Chemistry Print Report · For research reference only
Triphenylphosphine → [Rac]-2-ethoxy-3-(4-{2-[2-(2-ethoxy-4-fluoro-phenyl)-5-methyl-oxazol-4-yl]-ethoxy}-5,6,7,8-tetrahydro-naphthalen-1-yl)-propionic acid ethyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Triphenylphosphine | HCID 11776 | — |
| Reactant | ethyl N-ethoxycarbonyliminocarbamate | HCID 220568 | — |
| Reactant | [Rac]-2-ethoxy-3-(4-{2-[2-(2-ethoxy-4-fluoro-phenyl)-5-methyl-oxazol-4-yl]-ethoxy-}-benzo[b]thiophen-7-yl)-propionic acid | HCID 18003586 | — |
| Reactant | [Rac]-2-ethoxy-3-(4-hydroxy-5,6,7,8-tetrahydro-naphthalen-1-yl)-propionic acid ethyl ester | HCID 69557425 | — |
| Product | [Rac]-2-ethoxy-3-(4-{2-[2-(2-ethoxy-4-fluoro-phenyl)-5-methyl-oxazol-4-yl]-ethoxy}-5,6,7,8-tetrahydro-naphthalen-1-yl)-propionic acid ethyl ester | HCID 69557160 | — |
Reaction Steps
In analogy to the procedure described in example 17 a], [rac]-2-ethoxy-3-(4-hydroxy-5,6,7,8-tetrahydro-naphthalen-1-yl)-propionic acid ethyl ester (example 108 b]) was reacted with 2-[2-(2-ethoxy-4-fluoro-phenyl)-5-methyl-oxazol-4-yl]-ethanol (example 95) in the presence of triphenylphosphine and DEAD (diethyl azodicarboxylate) to yield [rac]-2-ethoxy-3-(4-{2-[2-(2-ethoxy-4-fluoro-phenyl)-5-methyl-oxazol-4-yl]-ethoxy}-5,6,7,8-tetrahydro-naphthalen-1-yl)-propionic acid ethyl ester, which was further saponified in analogy to the procedure described in example 91 e] to yield [rac]-2-ethoxy-3-(4-{2-[2-(2-ethoxy-4-fluoro-phenyl)-5-methyl-oxazol-4-yl]-ethoxy}-5,6,7,8-tetrahydro-naphthalen-1-yl)-propionic acid as colorless solid.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06642389B2 |
| Source dataset | uspto-grants-2003_11 |
| ORD ID | ord-0d7278a86fe84f9cbfb68bebdb81cf3b |
| Source note | uspto-grants-2003_11 |