1985
DOI: 10.1002/ange.19850970928
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Stereoselektive nucleophile Addition an ein bicyclisches Keton; Steuerung des Reaktionsverlaufs durch eine entfernte Tricarbonyl(dien)eisen‐Gruppe

Abstract: Drittens ist die prozentuale Absorptionsabnahme durch diesen ProzeR bei p H = 2 bis 4 nahezu pH-unabhangig, wahrend die relativen Ausbeuten der Reaktionen (b) und (h) linear vom pH-Wert abhtingen.Die starke Absorption, die nach dem dritten ProzeB verbleibt, wird durch den Komplex 2 verursacht.Wir schlieRen somit, da der dritte ProzeD wie erwartet auf Konzentrationsanderungen anspricht und da Ethylen entsteht, da8 es sich dabei tatsachlich um die 0-Eliminierung von Alkohol nach Reaktion (f) handelt und daB Dies… Show more

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Cited by 8 publications
(3 citation statements)
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“…As expected, the syn-tosyloxy derivative of the complex (not shown in Scheme 141) solvolyzes faster than the anti derivative but the effect is very small. 373 Apparently, both diene moieties are relatively poor homoconjugative electron donors and π-face selection is most likely controlled by the σ-assistance rather than by the π-assistance, as is also the case for the reductions of bicyclo(2.2.1)hept-2-en-7-one, section 3.1.1.…”
Section: Metal Hydride Reduction Of Tetrakis(methylene)bicyclo(222)oc...mentioning
confidence: 96%
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“…As expected, the syn-tosyloxy derivative of the complex (not shown in Scheme 141) solvolyzes faster than the anti derivative but the effect is very small. 373 Apparently, both diene moieties are relatively poor homoconjugative electron donors and π-face selection is most likely controlled by the σ-assistance rather than by the π-assistance, as is also the case for the reductions of bicyclo(2.2.1)hept-2-en-7-one, section 3.1.1.…”
Section: Metal Hydride Reduction Of Tetrakis(methylene)bicyclo(222)oc...mentioning
confidence: 96%
“…The syn approach is preferred in all investigated metal hydride additions to tetrakis(methylene) bicyclo(2.2.2)octan-2-one where the remote substituent that introduces electronic bias is Fe(CO) 3 . However, the magnitude of the effect strongly depends on the reactivity of the metal hydride.…”
Section: 15 Metal Hydride Reduction Of Tetrakis(methylene)bicyclo(222...mentioning
confidence: 99%
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