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- W1990776661 abstract "trans -Chalcone-epoxides (I) and threo -1,3-diaryl-2-hydroxy-3-chlor-propanones-1 (VI) react stereospecifically with hydrazine yielding trans -3,5-diaryl-4-hydroxy-Δ 2 -pyrazolines (IV). cis -4-Hydroxy-Δ 2 -pyrazolines (VII) have been prepared from the diastereomeric erythro -chlorohydrines (V). Reactions (acetylation, dehydration, nitrosation) of 4-Hydroxy-Δ 2 -pyrazolines are described." @default.
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- W1990776661 date "1972-01-01" @default.
- W1990776661 modified "2023-10-18" @default.
- W1990776661 title "Zur reaktion von trans-chalkonepoxiden und stereoisomeren chlorhydrinen mit hydrazin" @default.
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- W1990776661 doi "https://doi.org/10.1016/s0040-4020(01)93665-8" @default.
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