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- W1987302970 abstract "trans,trans-1,3-Diphenyl-2-azaallyllithium (1) cycloaddiert sich regiospezifisch an die CN-Doppel-bindung des Phenylisocyanats sowie Phenyl- und Methylisothiocyanats unter Bildung eines Imidazolidin-4-ons (2a) bzw. -4-thions (2b, c). Bei entsprechenden Umsetzungen mit den symmetrischen Heterokumulenen Schwefelkohlenstoff und Dicyclohexylcarbodiimid folgt der Cycloaddition jeweils eine schnelle Sekundärreaktion (→4, 7). 1,3-Anionic Cycloadditions, XV. Reactions of trans,trans-1,3-Diphenyl-2-azaallyllithium with Heterocumulenes trans,trans-1,3-Diphenyl-2-azaallyllithium (1) reacts with phenylisocyanate, phenylisothiocyanate, and methylisothiocyanate to give an imidazolidine-4-one (2a) or imidazolidine-4-thione (2b, c), respectively. When reacting with carbon disulfide or dicyclohexylcarbodiimide (symmetrical heterocumulenes) the cycloaddition is followed by a fast secondary reaction (→ 4, 7)." @default.
- W1987302970 created "2016-06-24" @default.
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- W1987302970 date "1977-02-01" @default.
- W1987302970 modified "2023-10-16" @default.
- W1987302970 title "1,3‐Anionische Cycloadditionen, XV. Reaktionen von <i>trans</i> , <i>trans</i> ‐1,3‐Diphenyl‐2‐azaallyllithium mit Heterokumulenen" @default.
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- W1987302970 doi "https://doi.org/10.1002/cber.19771100227" @default.
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