HuagongsheHuagongshe Chemistry Print Report · For research reference only
Isobutyl chloroformate → BocPro-Phe-DPheOMe
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Isobutyl chloroformate | HCID 62365 | — |
| Reactant | 1,2-Pyrrolidinedicarboxylic acid, 1-(1,1-dimethylethyl) ester, (2S)- | HCID 85083 | — |
| Reactant | HCID 131713719 | HCID 131713719 | — |
| Product | BocPro-Phe-DPheOMe | HCID 131713718 | 70% |
Reaction Steps
Condensation of ZPheOH (7.5 g.) and HDPheOMe (5.4 g.) by the mixed anhydride method using isobutyl chloroformate gave ZPhe-DPheOMe in 66% yield. Debenzyloxycarbonylation of ZPhe-DPheOMe (6.9 g.) by hydrogenation with palladium catalyst gave HPhe-DPheOMe in 100% yield. Condensation of BocProOH (3.23 g.) and HPhe-DPheOMe (4.9 g.) by the mixed anhydride method using isobutyl chloroformate gave BocPro-Phe-DPheOMe in 70% yield. Hydrazinolysis of BocPro-Phe-DPheOMe (5.0 g.) gave BocPro-Phe-DPheNHNH2 in 84% yield.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04472305 |
| Source dataset | uspto-grants-1984_09 |
| ORD ID | ord-81b400a222d8414289450d73e39e8af3 |
| Source note | uspto-grants-1984_09 |