A queer product of the Beirut reaction with dimedone-AM1 analysis

Türker, Burhan Lemi
Dura, E
Dimedone reacted with benzofuraxane in the presence of Et3N. The expected products were quinoxaline derivatives but an unexpected compound was obtained in low yield. The structural identification of the product was done spectrally and a mechanism for its formation was proposed by the aid of AM l type semiempirical calculations.


The chemistry of homophthalic acid: a new synthetic strategy for construction of substituted isocoumarin and indole skeletons
Oezcan, Sevil; Balcı, Metin (Elsevier BV, 2008-06-02)
Homophthalic acid was reacted with thionylchloride/DMF and chloroethylformate/NEt(3) in the presence and absence of NaN(3). in all cases completely different isocoumarin derivatives were obtained. These unusual isocoumarin derivatives were isolated and characterized and their formation mechanisms are discussed. The homophthalic acid monomethyl ester was converted into the corresponding isocyanate. Reaction of the isocyanate with different amines produced the urea derivatives. Base-supported condensation rea...
Unusual oxidative free-radical additions of 1,3-dicarbonyl compounds to benzonorbornadiene and oxabenzonorbornadiene
Cahskan, R; Pekel, T; Watson, WH; Balcı, Metin (Elsevier BV, 2005-09-12)
Benzonorbornadiene and oxabenzonorbornadiene were reacted with dimedone and acetylacetone in the presence of Mn(OAc)(3) and Cu(OAc)(2). The reaction of benzonorbornadiene with dimedone gave the dihydrofuran addition product, whereas the reaction with acetylacetone produced, in addition to the dihydrofuran derivative, a rearranged product. On the other hand, oxanorbornadiene gave unusual products such as the cyclopropanated compound and the product arising from the addition of two moles of dimedone. The mech...
A novel one-pot synthesis of ferrocenyl-substituted 1,2,4-oxadiazoles
Zora, Metin; Kelgokmen, YILMAZ (Elsevier BV, 2014-06-01)
One-pot synthesis of 5-ferrocenyl-1,2,4-oxadiazoles via the reaction between 3-ferrocenylpropynal and amidoximes is described. 3-Ferrocenylpropynal reacts with a variety of amidoximes in the presence of KOH in refluxing dioxane to afford a broad range of 5-ferrocenyl-1,2,4-oxadiazole derivatives. The reaction first produces the corresponding conjugate addition product which, upon cyclization and rearrangement, yields the targeted 1,2,4-oxadiazole. The reaction appears to be general for a diversity of amidox...
A novel conducting copolymer: Investigation of its matrix properties for cholesterol biosensor applications
SÖYLEMEZ, SANİYE; Kanik, Fulya Ekiz; Nurioglu, Ayda Goycek; Akpinar, Hava; Toppare, Levent Kamil (Elsevier BV, 2013-06-01)
2-Heptyl-4,7-di(thiophen-2-yl)-1H-benzo[d]imidazole) (BImTh) was synthesized. Electrochemical copolymerization of this monomer with 2-(((9H-fluoren-9-yl)methoxy)carbonylamino)acetic acid (Fmoc-Gly-OH) was achieved on a graphite electrode and used as a matrix for amperometric cholesterol biosensing studies. In order to prepare a new cholesterol biosensor, cholesterol oxidase (ChOx) was covalently immobilized onto the copolymer coated graphite electrode. Cholesterol was used as the substrate and the decrease ...
A Dual-Surface Mechanism of Oxidant-Free Pyrrole Polymerization in the Two-Dimensional Titanium Carbide (MXene) Interlayer Nanospace
Yıldırım, Erol; Luo, He-Kuan; Jin, Hongmei; Wu, Gang; Tan, Teck Leong; Wong, Zicong Marvin; Xu, Jianwei.; Yang, Shuo-Wang (2022-01-01)
The influence of confinement in acidic nanotemplates on the polymerization reaction of pyrrole was previously reported. Similarly, an in situ oxidant-free polymerization of pyrrole on and in between the Ti3C2 MXene layers has been demonstrated experimentally. The newly formed PPy/MXene (PPy/polypyrrole) interface showed high electrical conductivity and supercapacitor features with excellent cycling stability. However, the polymerization mechanism remains unclear. In this study, the pyrrole polymerization me...
Citation Formats
B. L. Türker and E. Dura, “A queer product of the Beirut reaction with dimedone-AM1 analysis,” JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM, pp. 143–147, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62447.