Article ID Journal Published Year Pages File Type
5286965 Tetrahedron Letters 2005 4 Pages PDF
Abstract
Halogen effects were described in the Robinson-Gabriel type reaction of cyclopropanecarboxylic acid N′-substituted-hydrazides with PPh3/CX4 (X = Cl, Br, I). Cyclopropyl-5-substituted-[1,3,4]oxadiazole (2) and 2-(3-halopropyl)-5-substituted-[1,3,4]oxadiazoles (4 or 5) were obtained, respectively.
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Physical Sciences and Engineering Chemistry Organic Chemistry
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Halogen effects in Robinson-Gabriel type reaction of cyclopropanecarboxylic acid N′-substituted-hydrazides with PPh3/CX4
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