| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: described is a method of producing compounds of formula ^ , in which n equals 1 or 2, R1 denotes hydrogen or halogen, R2 denotes hydrogen or halogen, and R3 denotes hydrogen, halogen or O-C1-C4alkyl, involving reaction of a compound of formula ^ , in which PG denotes a protective group, in an organic solvent with a compound of formula ^ to obtain a compound of formula ^ and a compound of formula 1 is obtained from this compound by splitting the protective group PG. ^ EFFECT: improved properties of the compound. ^ 12 cl, 5 ex |
