1963
DOI: 10.1021/jo01044a535
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The Reaction of Triisobutylaluminum with Carbon Tetrachloride. A Novel Preparation of Diisobutylaluminum Chloride

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Cited by 20 publications
(4 citation statements)
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“…(52) Curtin55 reported a value of [a]D -48.8°for optically pure di-L-( -)-rec-butylmercury. Although he arrived at this number by calculation of numerical data reported by Jensen and co-workers46 for the conversion of L-(-)-rec-butylmercuric bromide to L-( -)-sec-butyl-(±)-sec-butylmercury and reconversion to L-( -)-sec-butylmercuric bromide, we have been unable to duplicate this calculation from Jensen One might visualize at least two general mechanistic paths which are consistent with the observed stereochemistry: (1) direct electrophilic attack of dichlorocarbene on the carbon-mercury bond in a concerted manner; (2) formation of an intermediate ylid 14 subsequent stereospecific alkyl migration. Although there is reason to believe that ylids ae involved in insertion reactions of dichlorocarbene with various sulfur-7a-c and nitrogen-containing9b•10 compounds and although stable ylids can be prepared upon generation of halocarbenes in the presence of phosphine derivatives,54 the present results do not allow one to distinguish between the two postulated paths.…”
Section: Stereochemistry Of Insertionmentioning
confidence: 99%
“…(52) Curtin55 reported a value of [a]D -48.8°for optically pure di-L-( -)-rec-butylmercury. Although he arrived at this number by calculation of numerical data reported by Jensen and co-workers46 for the conversion of L-(-)-rec-butylmercuric bromide to L-( -)-sec-butyl-(±)-sec-butylmercury and reconversion to L-( -)-sec-butylmercuric bromide, we have been unable to duplicate this calculation from Jensen One might visualize at least two general mechanistic paths which are consistent with the observed stereochemistry: (1) direct electrophilic attack of dichlorocarbene on the carbon-mercury bond in a concerted manner; (2) formation of an intermediate ylid 14 subsequent stereospecific alkyl migration. Although there is reason to believe that ylids ae involved in insertion reactions of dichlorocarbene with various sulfur-7a-c and nitrogen-containing9b•10 compounds and although stable ylids can be prepared upon generation of halocarbenes in the presence of phosphine derivatives,54 the present results do not allow one to distinguish between the two postulated paths.…”
Section: Stereochemistry Of Insertionmentioning
confidence: 99%
“…Flemming et al [97] Literatur beschrieben. Zweifel et al [98] berichteten von der Cu-katalysierten stereoselektiven Synthese von 1,3-Dienen aus Alkinen über eine Addition des Kupferchlorids (20 mol%) an die Ethenylalane, bei der die trans,trans- nach Arbeitsvorschriften von Pawlenko [99] und Collette [100]…”
Section: Cu-katalysierte Kreuzkupplung Des Brommethylpyrons 96 Mit Al...unclassified
“…Das erhaltene Bromidgemisch 100R/101R wurde ohne weitere Trennung der Isomere umgesetzt. -1 H-NMR [46] [47] (250 MHz, CDCl (25), 109 (17), 106 (30), 97 (10), 83 (14), 73 (100), 69 (20), 59 (32). [57] angegeben, erwies sich experimentell als nicht vorteilhaft, da ein nicht unerheblicher Anteil an AlMe 3 frühzeitig aus der Reaktionslösung entfernt wurde und sich dadurch im Schlenkhahn niederschlug.…”
Section: ´´1unclassified
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