Loading...
Recherche

Synthesis of (±)‐ cis ‐1‐Aryl‐3‐oxo‐2,3‐dihydro‐1 H ‐benzo[ f ]chromene‐2‐carbonitriles and (±)‐ trans ‐4‐Aryl‐2‐oxo‐3,4‐dihydro‐2 H ‐benzo[ h ]chromene‐3‐carbonitriles