A simple synthesis of symmetrical α-diones from organometallic reagents and 1,4-dimethyl-piperazine-2,3-dione
Autor: | Ulrich T. Mueller-Westerhoff, Ming Zhou |
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Rok vydání: | 1993 |
Předmět: | |
Zdroj: | Tetrahedron Letters. 34:571-574 |
ISSN: | 0040-4039 |
DOI: | 10.1016/s0040-4039(00)61622-2 |
Popis: | Short reflux of an equimolar mixture of N-N′-dimethyl ethylenediamine and diethyl oxalate in i-propanol or diethyl ether leads to 1,4-dimethyl-piperazine-2,3-dione, which is able to react with two equivalent of organolithium or Grignard compounds to form symmetrically substituted α-diones in excellent yields. |
Databáze: | OpenAIRE |
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