| 摘要 |
1306381 3,3 - Dihalo - 4 - alkoxynitrobenzenes CIBA-GEIGY AG 24 April 1970 [25 April 1969] 19829/70 Heading C2C [Also in Division A5] Compounds having the general formula wherein X 1 and X 2 represent, independently of each other, bromine or iodine and R represents C 1-4 alkyl or an optionally chlorine substituted C 2-4 alkenyl radical are prepared by reacting an ester of a strong acid and an alcohol ROH, for example, a sulphate, with a phenol of formula |
