960080-03-9Relevant academic research and scientific papers
Selective cationic cyclizations with α-pyrones as terminators
Leutbecher, Heiko,Schmidt, Dietmar,Conrad, Jürgen,Beifuss, Uwe
, p. 2545 - 2548 (2008/02/13)
The process of the cationic olefin cyclization of 3-substituted 4-hydroxy-2H-pyran-2-ones 3 that may produce both trans- and cis-pyrano[4,3-b]chromen-1-ones (4) and trans- and cis-pyrano[2,3-b]chromen-4- ones (5) can be efficiently controlled by properly
