Indolizines. 4. Dyes Derived from Oxoindolizinium Ions and Active Methylene Compounds
Dyes of a new class, incorporating the dihydro-1-oxoindolizine structural unit, have been synthesized.Oxoindolizinium ions react with active methylene compounds to give dyes (λmax 560-630 nm) in high yield.The syntheses of the dihydro-1-oxoindo
Weidner, C. H.,Wadsworth, D. H.,Bender, S. L.,Beltman, D. J.
p. 3660 - 3664
(2007/10/02)
Indolizines. 2. Preparation of 1- and 3-Indolizinols and Their Esters
2,3-Diarylcyclopropenones react smoothly with pyridine and substituted pyridines in a variety of solvents to produce 1- and/or 3-indolizinols.The regioisomeric indolizines were characterized by X-ray crystallography of their acetate derivatives.The synthesis and spectroscopic properties of a number of indolizinols and their ester derivatives are described.
Wadsworth, Donald H.,Bender, Steven L.,Smith, Douglas L.,Luss, Henry R.,Weidner, Charles H.
p. 4639 - 4644
(2007/10/02)
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