Reactions of dipivaloylketene and its dimer with NH2–nucleophiles. Formation of amides, hydrazides, ureides and pyrimidine-2,4-diones - Kollenz, Gert; Kappe, C.Oliver; S.Dalvi, Turkaram; Wentrup, Curt (ARKIVOC, 2001)
doi: 10.3998/ark.5550190.0002.603