1983
DOI: 10.1016/s0040-4039(00)86279-6
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Extended enolate ions from γ-phenylthio-crotonate esters

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Cited by 17 publications
(8 citation statements)
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“…[13] ™Flat∫ (secondary to secondary) and ∫uphill∫ migrations are generally not possible unless there is an extra driving force for the reaction. [15,16] The final example in this section is a remarkable [1,2] RS migration commonly referred to as the de Groot rearrangement. [14] The silyl group stabilizes the cation that results from the [1,2] migration by the b-silyl effect.…”
Section: Eliminationmentioning
confidence: 99%
“…[13] ™Flat∫ (secondary to secondary) and ∫uphill∫ migrations are generally not possible unless there is an extra driving force for the reaction. [15,16] The final example in this section is a remarkable [1,2] RS migration commonly referred to as the de Groot rearrangement. [14] The silyl group stabilizes the cation that results from the [1,2] migration by the b-silyl effect.…”
Section: Eliminationmentioning
confidence: 99%
“…Flache Wanderungen können ebenfalls durch die Bildung ungesättigter Ester aus Lactonen angetrieben werden. Lacton 19 wurde zum Beispiel durch Behandlung mit p ‐Toluolsulfonsäure in Butanol in den ungesättigten Ester 20 überführt (Schema ) 15, 16…”
Section: Mechanismen Der Sulfanylwanderungenunclassified
“…Lithio-γ-(methylthio)crotonate esters and γ-(phenylthio)crotonate 115 esters when deprotonated with potassium tert -butoxide undergo γ-alkylation to 116 and to 117 when excess of alkylating agent is applied. By contrast, 112 having both groups CO 2 R and RS at the same end of the allyl moiety, undergoes exclusive α-alkylation to 113 as both groups increasethe coefficient of the HOMO at their point of attachment on the allyl anion (Scheme ) 18 …”
Section: Allyl Sulfides (Cc−c−sr)mentioning
confidence: 99%