- A simple synthetic route to 3-phenoxybenzyl 2-methyl-2-(p-substituted phenoxy and thiophenoxy/naphthoxy)propyl ethers, structurally related to ethofenoprox
-
Some 3-phenoxybenzyl 2-methyl-2-(p-substituted phenoxy and thiophenoxy/naphthoxy)propyl ethers (8), bearing close structural resemblance to the powerful insecticide MTI-500 have been synthesised by a simple route for evaluating their insecticidal properties.
- Kumaran, G.,Kulkarni, G. H.
-
p. 168 - 170
(2007/10/02)
-
- ipso Nitration in p-halophenyl ethers
-
Addition of nitronium ion ipso to halogen occurs on nitration of the p-haloanisoles in acetic anhydride at -60 deg C.In the cases of p-fluoro- and p-chloro-anisole, addition of the nitronium ion is reversible and only small amounts of ipso products are obtained.With p-bromoanisole nitrodebromination occurs.When p-halophenyl ethers containing a trapping substituent, e.g., 2-(4-chlorophenoxy)-2-methylpropanoic acid, are used as substrates, substantial amounts of the spiro diene with nitro ipso to halogen, e.g., 3,3-dimethyl-8-chloro-8-nitro-1,4-dioxaspirodeca-6,9-dien-2-one, can be isolated.The results demonstrate that extensive ipso attack at the halogen-substituted position is general in the nitration of p-halophenyl ethers.Key words: ipso nitration, ether, diene, p-haloanisole.
- Clewley, Robin G.,Fischer, Alfred,Henderson, George N.
-
p. 1472 - 1479
(2007/10/02)
-