| abstract |
Chromanone derivatives of formula 1, where R1 to R4 are each, independently of each other, H, A, CN, Hal, OR5, COOR5, CF3, OCF3, NO2, Ar, OAr, N (R5) 2 or CON (R5 ) 2, R5 is H or A, A is alkyl having 1 to 6 carbon atoms, Ar is phenyl unsubstituted or substituted by A, OR5, CN, Hal, CF3, OCF3, NO2 or N (R5) 2, Hal is F, Cl, Br or I, and the salts thereof, which are suitable as intermediates for the synthesis of medications. |