Permethric acid → alpha,2,3,4,5,6-Hexafluorobenzyl 3-(2,2-dichlorovinyl)2,2-dimethylcyclopropanecarboxylate

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Reaction Steps

α,2,3,4,5,6-Hexafluorobenzyl 3-(2,2-dichlorovinyl)2,2-dimethylcyclopropanecarboxylate was prepared from 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid and α-bromopentafluorobenzyl fluoride following the procedure described in Example 2 Method B. The product, a colourless oil, was characterised by p.m.r. spectroscopy. Chemical shift δppm (solvent CDCl3): 1.0-2.5 (8H, m, (CH3)2 and cyclopropyl protons); 5.67 and 6.24 (1H, both d of d, J=8 Hz and J=2 Hz, CH=); 7.53 (1H, d, J=52 Hz, CHF).

Provenance & Evidence