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
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