1967
DOI: 10.1007/bf01167141
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Zum Reaktionsverhalten der Imidazolidin-thione-(4)

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Cited by 2 publications
(3 citation statements)
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“…The irreversible hydrolysis to α-aminothioamides is known when treating ITOs with strongly acidic reagents [31] and some examples of a following carbonyl exchange were observed under acidic and refluxing conditions in toluene. [32] Here, the amount of exchange corresponded to the existing ratio of carbonyl compounds (see Supporting Information Figure 10) with an important exception: acetone 1 d was released but Scheme 1. Overview of the one-pot formation of ITOs and occurring intermediates and side-products.…”
Section: Methodsmentioning
confidence: 93%
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“…The irreversible hydrolysis to α-aminothioamides is known when treating ITOs with strongly acidic reagents [31] and some examples of a following carbonyl exchange were observed under acidic and refluxing conditions in toluene. [32] Here, the amount of exchange corresponded to the existing ratio of carbonyl compounds (see Supporting Information Figure 10) with an important exception: acetone 1 d was released but Scheme 1. Overview of the one-pot formation of ITOs and occurring intermediates and side-products.…”
Section: Methodsmentioning
confidence: 93%
“…The irreversible hydrolysis to α‐aminothioamides is known when treating ITOs with strongly acidic reagents [31] and some examples of a following carbonyl exchange were observed under acidic and refluxing conditions in toluene. [32] Here, the amount of exchange corresponded to the existing ratio of carbonyl compounds (see Supporting Information Figure 10) with an important exception: acetone 1 d was released but not incorporated into the catalyst structure and thus selectively removed as the respective side chain of the ITO (Scheme 2 a, Supporting Information Figure 8). Consequently, in water, acetone 1 d is exchanged with an aldehyde over time, which not only provides a process of structural mutation but also a mode of selective formation of a certain catalyst.…”
mentioning
confidence: 97%
“…Die irreversible Hydrolyse zu α-Aminothioamiden ist bekannt, wenn ITOs mit stark sauren Reagenzien behandelt werden [31] und einige Beispiele eines anschließenden Carbonylaustauschs wurden unter sauren und Rückflussbedingungen in Toluol beobachtet. [32] Dabei entsprach die Menge des Austauschs dem vorhandenen Verhältnis der Carbonylverbindungen (siehe Abbildung 10 in den Hintergrundinformationen) mit einer wichtigen Ausnahme: Aceton 1 d wurde freigesetzt, aber nicht in die Katalysatorstruktur eingebaut und somit selektiv als entsprechende Seitenkette des ITO entfernt (Schema 2a, ergänzende Abbildung 8). Folglich wird Aceton 1 d in Wasser mit der Zeit gegen einen Aldehyd ausgetauscht, was nicht nur einen Prozess der Strukturmutation, sondern auch einen Modus der selektiven Bildung eines bestimmten Katalysators darstellt.…”
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