The compound 3-(3-hydroxy)propylidene-piperazine-2,5-dione, derived from ethyl 4-ethoxycarbonyl-2-chloroacetylamino-2-butenoate, was treated with N-bromosuccinimide (NBS) in chloroform to give the spiro- left bracket oxolane-2,2 prime -piperazine right br
Shin,Sato,Honda,Yoshimura
p. 2652 - 2656
(2007/10/02)
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