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Showing 1 to 3 of 3 for “"Piperazine-2,5-dione"”.
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Approaches to the synthesis of diazabiphenylenes
… cis,trans,cis-tricyclo[5,3,0,0 2,6]decane-3,8- dione. A limited investigation was conducted into the Beckmann rearrangement of the dioxime(s) of this diketone and polyphosphoric acid then used as a catalyst to give the expected cis,trans,cis-4,10-diazatricyclo[6,4,0,0 2,7]- dodecane-3,9-dione as …
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Experimental and theoretical vibrational spectroscopic studies of diketopiperazines
The diketopiperazine (DKP) cyclo(L-homoCySH-L-homoCySH) (C-CySH) has been synthesised by a method reported in the literature. DFT calculations of molecular structures and their associated vibrational modes were conducted at the B3LYP/aug-cc-pVTZ level. The two calculated minimum energy structures …
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Thermal Stability and Solid State Cyclization of Dipeptides
… state synthesis of the cyclodipeptides, or diketopiperazines (DKPs), from the corresponding dipeptides was developed in this work as a new synthetic method. It is highly efficient, solvent free, producing no side products, stereospecific and environmentally friendly. The solid state synthesis of …