1,3-dipolar cycloaddition reactions of some mesomeric betaines.

Date

1985

Author

Güleç, Ahmet

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https://hdl.handle.net/11511/8332

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Graduate School of Natural and Applied Sciences, Thesis

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1,3-dipolar cycloaddition reactions of various mesomeric betaines Çetiner, Can Orhun; Türker, Lemi; Department of Chemistry (1991)
1,3-dipolar cycloaddition reactions of substituted phthalazinium betaines Kayalıdere, İlhan; Türker, Burhan Lemi; Department of Chemistry (1995)
1,3-dipolar cycloaddition reactions of C-60 with 3-phenyl-phthalazinium-1-olate. A theoretical study Türker, Burhan Lemi (2002-07-26) 1,3-Dipolar cycloaddition products of the reaction between C-60 and 1-phenyl-phthalazinium-1-olate were studied within the framework of AM1(RHF) level. The reactions involving the double bond between two hexagons and a hexagon and a pentagon, as well as the cycloaddition products followed by disrotatory (sigma)2(s) + (pi)4(s) electrocyclic ring openings were considered. Also for some of the structures calculated H-1 NMR spectra at the level of TNDO/2 method were presented.
1,3-Dipolar Cycloaddition Reactions of 1-Methyl-3-Oxidopyridinium Betaine with C-70-A Theoretical Study Türker, Burhan Lemi; Gumus, Selcuk (American Scientific Publishers, 2009-04-01) In the present study, the molecular orbital properties of 1,3-dipolar cycloaddition products of 1-methyl-3-oxidopyridinium betaine with C-70 have been investigated theoretically at the level of PM3 (RHF) type semi empirical quantum chemical calculations and then single point DFT calculations were performed for the energies. The betaine acts as a 4 pi-component across its 2,6-positions and certain C=C bonds of C-70 act as 2 pi-component in the 1,3-dipolar cycloadditions considered presently. Various cycloadd...
1,3-DIPOLAR CYCLOADDITION REACTIONS OF SOME 1-ARYL-PYRIDINIUM-3-OLATES CELEBI, N; CETINER, O; GULEC, A; Türker, Burhan Lemi (Wiley, 1993-07-01) In this study, the reactivities of 1-(2,4-dinitrophenyl)-, 1-(4,6-dimethylpyrimidin-2-yl)-, and 1-(5-nitro-2-pyridyl)-pyridinium-3-olates were tested upon various inductively and mesomerically electron rich dipolarophiles. N-substituted pyridinium-3-olates react across the 2,6-positions with 2pi-dipolarophiles whereas 4pi-dipolarophiles added across both 2,6 and 2,4 positions of the betaines.

Citation Formats

A. Güleç, “1,3-dipolar cycloaddition reactions of some mesomeric betaines.,” Middle East Technical University, 1985.