ABDELWAHED SAYED

Synthesis of bis-thiazoles, bis-pyrazoles, bis-hydrazonates, and bis-triazolothiadiazoles based on bis-hydrazonoyl and bis-hydrazones

A facile synthesis of bis-thiazoles, bis-pyrazoles, and bis-hydrazonates from the reaction of bis-hydrazonoyl dichlorides with different moieties is described. Bis-triazolothiadiazoles were synthesized via oxidative cyclization of bis-hydrazones. Structures of the final product were elucidated by elemental analyses and spectral data.

Anahtar Kelimeler:

Bis-hydrazonoyl, bis-thiazoles, bis-pyrazoles, bis-hydrazonates, bis-hydrazones

Bees of the genera Anlhidium, Anlhoeopo, Hoplilis ond Megoehiie(HymenoPlero: Apoideo; Meooehilidoe) in some ports ol Eoslern Anololio

This is a faunal study of some genera of Megachilidae in some parts of Eastern Anatolia. In this study 16 species of Anthidium, 8 species of Anthocopa, 10 species of Hoplitis, and 14 species of MegCY;hile has been found and their host plants recorded. All the species are new for the Turkish Iauna. On the other hand Anthocopa yermasoyiae asiae, A. bidentata pallens. A. apriaca bayburtens.s, Hophtis moWs, H. erzu· rumensis, H. pyrenaea ardahanensis, Megach'.le cscumclncta ozbekj, M. genalis tortu· mensis. M. bicoloriventris erzurumensis, and M. sexmaculal:a thracia are new species and subspecies. Holotypes and paratypes are in the Museum of Plant Protection, Agriculture Faculty, Atanırk University, Erzurum, Turkey. At the result of this study, it has been found that Megachile analis and M. ciro cumcincta ozbeki are good pollinators of sa'nfoin (Onobryehis sativa L). Anthidium eblongatum, A. punetatum, A. cingulatum, Hoplitis mollis, and H. erzurumensis are also good pollinators of alfalfa. red clover and as well as sainfoin. In this study it is found that Megachile pacıfica that is the most important pollinator of alfalfa and succesfully managed in artificial nesting sites, naturally ocours in the Eastern Anatolia.

Keywords:

Bis-hydrazonoyl, bis-thiazoles, bis-pyrazoles, bis-hydrazonates, bis-hydrazones,

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3,6-Di(4-chlorophenyl)-bis-triazolo[3,4-b]thiadiazole (29c) Yellow brown solid, Yield (86%); mp: 207 ◦ C. IR (KBr): νmax1593 (C=C) cm −1 1H NMR (DMSO- d6) : δ 24–8.13 (m, 8H, ArH), 13C NMR (DMSO- d 6) : at 128.68, 128.45, 129.94, 134.97, 152.14, and 168.01 ppm.