Studies on pyrazines. Part 32. Synthesis of trisubstituted and tetrasubstituted pyrazines as ant pheromones

N Sato, T Matsuura

Index: Sato, Nobuhiro; Matsuura, Tomoyuki Journal of the Chemical Society - Perkin Transactions 1, 1996 , # 19 p. 2345 - 2350

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Citation Number: 20

Abstract

The synthesis of trialkylpyrazines having methyl groups on C-2 and C-5 is described, which is completed by the cross-coupling reaction of 2-chloro-3, 6-dimethylpyrazine with dialkylzinc in the presence of [1, 3-bis (diphenylphosphino) propane] nickel (II) chloride. Similarly, 2, 5-diisobutyl-,-diisopropyl-and-di-sec-butyl-3-methylpyrazines are prepared from the corresponding dialkyl chloropyrazines. The dimethyl products are acylated with an α- ...

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