Abstract
The synthesis of 36 compounds, acetals, ketals, esters or ethers of acetylenic, olefinic and aliphatic alcohols is described. These and 26 related compounds were tested as fumigants against Anastrepha suspensa (Loew) larvae. Twenty-three compounds showed fumigant activity. 3-Butyne-2-one killed all the larvae exposed at the rate 2.2 mg/1 for 3 h, as did the reference fumigant ethylene dibromide (EDB). Six compounds killed 100% of the larvae exposed to them at the rate of 2.2 mg/l for 24 h. Eight compounds, including propargyl alcohol, propargyl methacrylate and propargyl 3-methylcrotonate, did not kill A. svspensa larvae until a few days after exposure during which time the larvae apparently grew normally and underwent pre-pupariation wanderlust in synchrony with untreated larvae.
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