abstract |
New ester 1,2,4,4,4-pentachloro-1-butenyl 2,4,4,4-tetrachlorobutyrate (I) CCl3-CH2-C double bond C-O-CO-CHCl-CH2-CCl3 is an intermediate for pesticides, esp. pyrethroid cpds. such as esters of cis-2-(2,2-dichlorovinyl)-3,3-dimethyl-cyclopropanecarboxylic acid. |