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The effect of ion pairing on the stereochemistry of elimination from quaternary ammonium salts

โœ Scribed by J.K. Borchardt; W.H. Saunders Jr.

Publisher
Elsevier Science
Year
1972
Tongue
French
Weight
180 KB
Volume
13
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

Recent reports have called attention to the importance of ion pairing in determining the stereochemistry of elimination from cycloalkyl tosylates and

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266 t?o. 4 trans-and cis-olefin proportions. Therefore, we have now investigated the effect of dicyclohexyl-18-crown-6-ether (N)'\*l\* on the trans-and cis-olefin composition in reaction of the bromide I (X-Br) and the tosylate I (X=OTs) with potassium tert-butoxide in three very different sohrents