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- W2000100017 abstract "2-Chloro- (P1) and 2-bromo-1,1,3-trimethyl-1-silacyclohexene-2 (P2) could be prepared from 1,5-dihalogeno-2-methyl-1-pentenes via 1-chlorodimethylsilyl derivatives C by cyclization with magnesium or via 5-chlorodimethylsilyl derivatives F after lithiation and cyclization under LiCl elimination. Hydrolysis of F leads, via the fragrant silanols K, to disiloxanes L. P2 could be transformed to the basic ring compounds of 1,1,3-trimethyl- and 1,1,2,3-tetramethyl-1-sila-cyclohexene-2. P2 is useful as a precursor for the preparation of sila-β-ionone. 2-Chlor- (P1) und 2-Brom-1,1,3-trimethyl-1-sila-cyclohexen-2 (P2) liessen sich von 1,5-Dihalogen-2-methyl-1-pentenen aus über deren 1-Chlordimethylsilylderivate C durch Cyclisierung mit Magnesium oder über deren 5-Chlordimethylsilylderivate F nach Lithierung und Ringschluss unter LiCl-Abspaltung darstellen. Die Hydrolyse von F führte über stark blumig duftende Silanole K zu Disiloxanen L. P2 konnte in die einfachen Grundringkörper des 1,1,3-Trimethyl- und des 1,1,2,3-Tetramethyl-1-silacyclohexens-2 umgewandelt werden. P2 ist als Vorstufe zur Darstellung eines Sila-β-ionons geeignet." @default.
- W2000100017 created "2016-06-24" @default.
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- W2000100017 date "1984-08-01" @default.
- W2000100017 modified "2023-10-18" @default.
- W2000100017 title "Methyl- und halogen-substituierte 1-silacyclohexene-2" @default.
- W2000100017 cites W2057594672 @default.
- W2000100017 doi "https://doi.org/10.1016/0022-328x(84)85174-8" @default.
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