A simple and convenient method for the preparation of α-substituted-α-diazoesters
✍ Scribed by Noro Takamura; Tomishige Mizoguchi; Kenji Koga; Shun-ichi Yamada
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- French
- Weight
- 196 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
The first synthesis of diazoesters by direct diazotization of amino acid esters was reported by Curtius I,*) around 1900. Although this method is well suited for the preparation of diazoacetic ester, 3) it is generally inapplicable to the syntheses of a-substituted-a-diazoesters (I),*) because of very low yields * To whom inquiries may be addressed.
📜 SIMILAR VOLUMES
Amino-substituted aryhnethylketones are selectively brominated in sulfuric acid to afford the corresponding dibromomethylarylketones that are then debrominated with diethylphosphite to give the desired bromomethylarylketones in excellent yield.