312934-60-4Relevant academic research and scientific papers
Arylation of diversely substituted hydrazines by tri- and pentavalent organobismuth reagents
T?ubrik, Olga,M?eorg, Uno,Sillard, Rannar,Ragnarsson, Ulf
, p. 8363 - 8373 (2004)
Various hydrazine derivatives were studied with respect to arylation by triarylbismuthane and triarylbismuth diacetate reagents with emphasis on scope and limitations. Among these reagents, a few contained bulky substituents in their aromatic rings. The a
Synthesis of hydrazines with aromatic substituents using triarylbismuth reagents
Loog,Maeorg,Ragnarsson
, p. 1591 - 1597 (2007/10/03)
Smooth monoarylation of two triprotected hydrazine reagents under mild conditions has been accomplished using triarylbismuthanes in the presence of copper acetate and amine to give products 3 and 6 in excellent yield. Arylation on N2 after selective deprotection of derivatives with alkyl or aryl substituents on N1, resulting in compounds 8 and 9, is also demonstrated. Furthermore, other products derived from these reagents with free N-alkyl and N-aryl functions undergo the same reaction to give substances such as 10 and 11. As a result, the scope of the original hydrazine reagents has been further extended. A few reference compounds have also been prepared directly from phenylhydrazine.
