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2020 ◽  
Vol 75 (6-7) ◽  
pp. 697-708
Author(s):  
Willi Kantlehner ◽  
Heinz Malik ◽  
Ralf Kreß

AbstractCyclopropylacetylene and N,N,N′,N′,N′′,N′′-hexamethylguanidinium chloride (1a) react to give the orthoamide derivative 8c, in the presence of sodium hydride. 8c is transformed by elemental iodine to the vinylogous guanidinium salt 6f. Anion metathesis with the salts 5a, 5e, 6g delivers vinylogous guanidinium salts 5e–5i, 12a with counter ions derived from carbon acids (tricyanomethane, 1,1,3,3-tetracyano-propene). Phenylogous amidinium salts 15 guanidinium salts 19, 21 and the phenylogous orthoamide derivatives of formic acid 18 and carbonic acid 33 have been prepared.


2019 ◽  
Vol 131 (13) ◽  
pp. 4435-4439
Author(s):  
Kaitlyn E. Gunderson‐Briggs ◽  
Thomas Rüther ◽  
Adam S. Best ◽  
Mega Kar ◽  
Craig Forsyth ◽  
...  

2018 ◽  
Vol 130 (45) ◽  
pp. 15164-15164
Author(s):  
Archismita Misra ◽  
Isabel Franco Castillo ◽  
Daniel P. Müller ◽  
Carolina González ◽  
Stéphanie Eyssautier-Chuine ◽  
...  

2018 ◽  
Vol 130 (45) ◽  
pp. 15142-15147 ◽  
Author(s):  
Archismita Misra ◽  
Isabel Franco Castillo ◽  
Daniel P. Müller ◽  
Carolina González ◽  
Stéphanie Eyssautier-Chuine ◽  
...  

2017 ◽  
Vol 129 (6) ◽  
pp. 1689-1692 ◽  
Author(s):  
Sven Herrmann ◽  
Laura De Matteis ◽  
Jesús M. de la Fuente ◽  
Scott G. Mitchell ◽  
Carsten Streb

2016 ◽  
Vol 71 (6) ◽  
pp. 719-735
Author(s):  
Georg Knobloch ◽  
Stefan Saur ◽  
Anja Rebecca Gentner ◽  
Stefan Tussetschläger ◽  
Thorsten Stein ◽  
...  

AbstractPolymeric organic materials, e.g. cellulose fibres or nylon 6 (perlon), as well as inorganic materials, e.g. ceramics, can be coated with liquid or solid guanidinium salts. The coated materials can be inspected by scanning electron microscopy (SEM). The contrast and brightness of the pictures depend on the heaviest atom present in the anions. The best brightness and contrast were obtained with N,N′,N″-peralkylated guanidinium tetraiodidobismutates(III), which were prepared for the first time together with other guanidinium chloridometallates (Sb, Pb, Bi). Biological samples (cell cultures) can also be investigated by SEM with the aid of the guanidinium tetrachloridobismutate 4b after simple sample preparation.


2015 ◽  
Vol 70 (8) ◽  
pp. 563-572
Author(s):  
Willi Kantlehner ◽  
Stefan Saur ◽  
Georg Knobloch ◽  
Stefan Tussetschläger

Zusammenfassung:Es wird vorgeschlagen, das Akronym „RIBIL“ für flüssige, reaktive, Iminiumsalz-basierte Verbindungen zu verwenden. Eine Zusammenstellung von strukturell unterschiedlichen RIBILs wird vorgestellt. Die Anwendung von RIBILs als Reaktionsmedium ist vorteilhaft, da sie bei geeigneter Wahl der Reaktanden eine besonders einfache Aufarbeitung erlaubt. Die Reaktion äquimolarer Mengen an aliphatischen Carbonsäuren und Alkoholen in N,N-Dimethyl-(hydroxymethylen)iminium-hydrogensulfat (DMF/H2SO4-Addukt) (20c) führt zu Carbonsäureestern, die sich aus dem Reaktionsgemisch als zweite Phase abscheiden.


2014 ◽  
Vol 127 (2) ◽  
pp. 697-700 ◽  
Author(s):  
Zhuan-Ping Zheng ◽  
Wen-Hui Fan ◽  
Soham Roy ◽  
Kamila Mazur ◽  
Andreas Nazet ◽  
...  

2014 ◽  
Vol 126 (49) ◽  
pp. 13512-13512
Author(s):  
Sven Herrmann ◽  
Monika Kostrzewa ◽  
Andreas Wierschem ◽  
Carsten Streb

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