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- W1977488993 abstract "Syntheses of (1 R )‐ cis ‐3‐(2′,2′‐Dihalovinyl)‐2,2‐dimethylcyclopropane Carboxylic Acids via Favorskii ‐rearrangement of Optically Active Cyclobutanones The cis ‐cyclobutanones 7 are resolved by means of optically active amine salts of their sodium hydrogen sulfite adducts. The desired (1 R )‐ cis ‐carboxylic acids 9 are obtained from the (+)‐ cis ‐cyclobutanones 7 via Favorskii ‐rearrangement and HX‐elimination. The recycling of undesired (−)‐ cis ‐cyclobutanones 7 is carried out in good yield by their racemization, thus rendering the total synthesis 1 + 2 → 9 chirally economic." @default.
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- W1977488993 date "1981-12-16" @default.
- W1977488993 modified "2023-10-03" @default.
- W1977488993 title "Synthesen von (1R)-cis-3-(2?,2?-Dihalovinyl)-2, 2-dimethylcyclopropan-carbons�urenvia Favorskii-Umlagerung von optisch aktiven Cyclobutanonen" @default.
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- W1977488993 doi "https://doi.org/10.1002/hlca.19810640843" @default.
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