55520-53-1Relevant articles and documents
Reactivity of 2H-1,2,3-Diazaphosphole Derivatives: Unexpected Formation of Indoles and New Indolization Reaction
Baccolini, Graziano,Todesco, Paolo E.
, p. 535 - 538 (2007/10/02)
2H-1,2,3-Diazaphosphole derivatives (1) react with alkyl halides to give the corresponding 2,3-disubstituted indoles (3) as the major products (30-40percent yields).Small amounts (15-20percent) of the ring-opened compounds (4) in the two diastereoisomeric Z-configuration are also obtained.During this reaction a cis-(1) trans-(1) isomerization is also observed.Mechanistic explanations of these results have been described and a new general method has been developed for the synthesis of 2,3-disubstituted indoles from ketone arylhydrazones and PCl3.