Cycloaddition Reactions with Azabenzenes, XVIII. Synthesis of [2]Pyrindines
摘要:
The reaction of 1,2,4-triazines (1) and 1-cyclopentenylpyrrolidine (2) afforded 6,7-dihydro-5H-[2]-pyrindines (3) in good yields. Oxidation of 3 to the N-oxides (4), reaction of 4 with acetic anhydride to 5-acetoxy-6,7-dihydro-5H-[2]pyrindines (5) and elimination of acetic acid afforded [2]pyrindines (7). 2-Methyl-2H-[2]pyrindines (9) were also prepared.
Efficient Synthesis of 3,5,6‐Trisubstituted‐1,2,4‐triazines in the Brønsted Acidic Ionic Liquid, 1‐<i>n</i>‐Butylimidazolium Tetrafluoroborate ([Hbim]BF<sub>4</sub>)
作者:T. M. Potewar、R. J. Lahoti、Thomas Daniel、K. V. Srinivasan
DOI:10.1080/00397910601033534
日期:2007.2.1
NEUNHOEFFER H.; LEHMANN B.; EWALD H., J. LIEBIGS ANN. CHEM., 1977, NO 9,