Über die Einwirkung von Enaminen auf Chinone. X. Lewissäurekatalysierte Umsetzungen von Aminofumarsäurediäthylester und N,N‐disubstituierten Aminomaleinsäuredimethylestern mit p‐Benzochinon

Domschke, Günter; Oelmann, Hansjörg

doi:10.1002/prac.19693110512

Cited by 10 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here, it must be noted that the MDA displayed two carbonyl bands, which is in good accordance with literature. [47] A weak band corresponding to the allyl groups, at around 1647 cm −1 was detected in the spectra of all these monomers.…”

Section: Characterization Of the Synthesized Monomersmentioning

confidence: 91%

Acetylene Dicarboxylic Acid Diallyl Ester: A Versatile Monomer for Thiol–Ene Photocured Networks

Dağlar

Çakmakçı

Gunay

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

Thiol-ene photopolymerization (TEP) is a highly advantageous method for the curing of unsaturated monomers, and the design of novel monomers to be used in TEP is an active area of research. The feasibility and the versatility of novel acetylene dicarboxylic acid diallyl ester (ACDAE)-based monomers are synthesized and demonstrated. The electron deficient acetylenic core in ACDAE allows to apply three different click reactions, aza-Michael, thio-Michael, and metal-free azide-alkyne cycloaddition reactions, efficiently on it. Thus, three novel allylic monomers are synthesized and are used to prepare thiol-ene photopolymerized networks. All monomers are synthesized in good yields and structurally characterized by 1 H NMR and Fourier-transform infrared spectroscopy (FTIR) measurements. Thermal, thermomechanical, and mechanical properties, flame retardancy, transmittance, and the wettability of the networks are determined.

show abstract

Section: Characterization Of the Synthesized Monomersmentioning

confidence: 91%

Acetylene Dicarboxylic Acid Diallyl Ester: A Versatile Monomer for Thiol–Ene Photocured Networks

Dağlar

Çakmakçı

Gunay

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

“…The attack of the solvent acetonitrile to the formed carbocations was also observed in other cases. 11,12 The product 2a was proved authentic by the reaction of 4-aminoresorcinol The formation of 2e can be interpreted in terms of the acetonitrile acting as a nucleophile via its nitrogen atom and attacking the formed cationic center at the C6-position, followed by cyclization with the formation of oxazolocoumarin derivative 2e. On the other hand, the lack of formation of 4 is due to the absence of water in the pure acetonitrile used.…”

Section: Figurementioning

confidence: 97%

A Novel Method for the Synthesisof Oxazolocoumarin Derivatives

Abdelghani¹,

El-Aal²,

Shehab³

et al. 2003

Synthesis

View full text Add to dashboard Cite

Anodic oxidation of 7-hydroxycoumarin derivatives 1af in anhyd acetonitrile-lithium perchlorate at constant potential between 1.70-1.80 V (vs. Ag/10 -2 M Ag + ) using an undivided cell and platinium gauze electrodes leads to the formation of the corresponding oxazolocoumarin derivatives 2 and/or 3 according to the position of the second OH group in the benzene ring of the coumarin derivatives 1e,f. The formation of these oxidation products is discussed.

show abstract

“…A solution of /3-keto ester 48 (6.44 g, 1.81 mmol) in CH3OH (200 ml, anhydrous) was treated with triethylamine (1.82 g, 1.81 mmol) and allowed to stand at 25 °C for 7 days. Evaporation gives 6.44 g (100%) of cyclized /3-keto ester 50 as a foam, which was crystallized from benzene/hexane (1:2): mp 155-158 °C; NMR 7.25 (s, 5 H), 2.85 (s, 3 ), 1.48 (s, 9 H); ir 1715, 1664 (br) cm-1; MS m/e 357 (1), 301 (37), 284 (16), 283 (22), 257 (12), 256 (11), 255 (23), 59 (100). Anal: (C2iH27N04): C, , N. trans-1,6-Dioxo-2-methyl-4a-phenyldecahydroisoquinoline (51).…”

Section: Experimental Section10mentioning

confidence: 99%