25974-59-8Relevant academic research and scientific papers
CHROMENES AND CHROMANONES. PART II. THE BIRCH REDUCTION OF PRECOCENE I AND PRECOCENE II
Aniol, Miroslaw,Wawrzenczyk, Czeslaw
, p. 2655 - 2662 (2007/10/02)
The reduction of precocene I (1a), precocene II (1c) and 6-methoxy-2,2-dimethyl-2H-chromene (1b) with sodium or lithium in liquid ammonia was examined.The phenolic compounds and the bicyclic one with partialy reduced benzene ring were obtained as the majo
REGIOSPECIFIC ALKENYLATION OF PHENOLS BY ISOPRENE PROMOTED BY Pt(II) AND Pd(II) COMPLEXES
Felice, Vincenzo De,Renzi, Augusto De,Funicello, Maria,Panunzi, Achille,Saporito, Antonio
, p. 13 - 16 (2007/10/02)
Catalytic alkenylation of phenols with isoprene is promoted by Pd(II) or Pt(II) complexes.Ortho-isopentenylphenols are obtained together with the corresponding 2,2-dimethylchromans.The catalytic activity of the two d8 ions is compared.A possible mechanism is discussed.
REGIOSPECIFIC ALKENYLATION OF PHENOLS BY 1,1-DIMETHYLALLENE PROMOTED BY PLATINUM CATALYSTS
Renzi, Augusto De,Panunzi, Achille,Saporito, Antonio,Vitagliano, Aldo
, p. 993 - 996 (2007/10/02)
1,1-Dimethylallene reacts with phenolic substrates in the presence of catalytic amounts of platinum(II) complexes.A regiospecific C-alkenylation takes place, affording o-isopentenylphenols and 2,2-dimethylchromans.Possible reaction mechanisms are also discussed.
