155225-26-6Relevant articles and documents
The synthetic versatility of alkoxycarbonyl- and hydroxymethyl-piperazine- 2,5-diones
Chai, Christina L.L.,Elix, John A.,Huleatt, Paul B.
, p. 8722 - 8739 (2007/10/03)
Alkoxycarbonylpiperazine-2,5-diones are versatile precursors for the α-functionalisation of piperazine-2,5-diones. The alkoxycarbonyl group activates the α-carbon position to alkylation reactions and this provides a mild and selective method for the extension of the carbon framework of piperazine-2,5-diones. In addition, the alkoxycarbonyl group can be converted to the carboxy group, which in turn can be 'deleted' or manipulated for the installation of carbon and/or heteroatom substituents where desired, the latter via N-acyliminium chemistry. We also demonstrate that hydroxymethylpiperazine-2, 5-diones complement carboxypiperazinediones as precursors for the generation of N-acyliminium ions.
Chiral Ligands Containing Heteroatoms. 11. Optically Active 2-Hydroxymethyl Piperazines as Catalyst in the Enantioselective Addition of Diethylzinc to Benzaldehyde
Falorni, Massimo,Satta, Michele,Conti, Sandra,Giacomelli, Giampaolo
, p. 2389 - 2398 (2007/10/02)
Starting from enantiomerically pure serine, a series of (2R,5S) and (2S,5S)-2-hydroxymethyl-5-alkyl piperazines 1-5 were prepared in good yields without any racemization.The use of these compounds as chiral catalysts for the enantioselective addition of d
