FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for synthesis of derivative of aminobenzopyrane of the formula (2): 
Method involves reduction of nitro-group in derivative of 2,2-dimethyl-2H-1-benzopyrane of the formula (1): 
with hydrazine in the presence of a metallic catalyst. Invention provides high selectivity of the process with respect to olefin bonds and simple treatment that results to small waste and doesn't effect on reactor.
EFFECT: improved method of synthesis.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| SUBSTITUTED BENZOPYRANE DERIVATIVES USED AGAINST ARRHYTHMIA | 2002 |
|
RU2291867C2 |
| PROCESS FOR PREPARING (±)-6-CYANO-3,4-DIHYDRO-2,2- DIMETHYL-TRANS-4-(2-OXO-1-PYRROLIDINYL)-2H-1-BENZOPYRAN- 3-OL | 1992 |
|
RU2041223C1 |
| TRICYCLIC COMPOUNDS OF BENZOPYRAN AS ANTIARRHYTHMIC AGENTS | 2005 |
|
RU2380370C2 |
| METHOD OF SYNTHESIS OF PYRANYL-CYANOGUANIDINE DERIVATIVES | 1990 |
|
RU2057129C1 |
| BENZOPYRANE DERIVATIVE AND MEDICINAL AGENT BASED ON THEREOF | 2000 |
|
RU2234502C2 |
| BENZOPYRAN DERIVATIVES OR THEIR PHARMACEUTICALLY ACCEPTABLE SALTS, AND A METHOD OF THEIR SYNTHESIS | 1991 |
|
RU2038354C1 |
| METHOD OF SYNTHESIS OF (±) -6- CYANO- 3,4- DIHYDRO -2,2-DIMETHYL -TRANS -4- (2-HYDROXO -1-PYRROLIDINYL) -2H-1- BENZOPYRAN -3-OL | 1990 |
|
RU2036196C1 |
| METHOD OF SYNTHESIS OF BENZOCYCLOALKENYLDIHYDROOXYALKANOIC ACID DERIVATIVES | 1990 |
|
RU2012554C1 |
| HYDRAZINE DERIVATIVE, INSECTICIDAL COMPOSITION, METHOD OF CONTROLLING PESTS, PROCESS FOR PREPARING HYDRAZINE DERIVATIVE | 1992 |
|
RU2041220C1 |
| DERIVATIVES OF INDOLE | 1992 |
|
RU2061694C1 |
