Parası kalmadığı için otobüse binemiyordur ailesi porno izle ona daha yeni para gönderdiği için tekrar porno istemeye utanınca mecburen otostop çekmek için youporn çantasını alarak yol kenarına gelir etekli porno liseli türk kız yol kenarında dururken yanına yaklaşan porno kibar bir gencin onu gideceği yere kadar bırakmak porno izle istemesine çok mutlu olur arabaya bindiklerinde gideceği yer ile porno arabayı kullanan adamın gittiği yer arasında çok mesafe sex izle farkı olduğunu anlayan türk kız bu yaptığı porno indir iyilik karşısında arabada ona memelerini açar porno sapıklaşan adam yol kenarındaki hotelde durarak porno izle üniversiteli otostop çeken türk kızına odada sakso çektirip sikerSynthesis of Some New Substituted Triazole Fused with Benzothiazoles and their Antibacterial Activity| Abstract

7187379870

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Abstract

Synthesis of Some New Substituted Triazole Fused with Benzothiazoles and their Antibacterial Activity

Author(s): TM Bhagat

The compound 4-ethoxy acetanilide (phenatidine) 1 on treatment with bromine in acetic acid followed by hydrolysis with dil. HCl/NaOH solution, yielded 2-bromo-4-ethoxy aniline 2 which on treatment with sodium thiocyanate in acetic acid afforded 2-amino-4-bromo-6-ethoxy benzothiazole 3. Compound 3 in ethylene glycol was heated at 150°C with 80% hydrazine hydrate to get 4-bromo-6-ethoxy-2-hydrazino benzothiazole 4. This hydrazino compound 4 on heating with formic acid for three hours, yielded 4-bromo-6-ethoxy 2-hydrazinoformyl benzothiazole 5. Same compound 4 when heated independently with formic acid for six hours/urea for three hours/carbon disulphide in alkali afforded 5-bromo-7-ethoxy 6/5-bromo-3-hydroxy-7-ethoxy 7/5-bromo-3-mercapto-7-ethoxy 8-1, 2, 4-triazolo [3, 4-b]-benzothiazoles. Compound 4 on heating with acetic acid/acetic anhydride gave acetyl benzothiazolyl derivative 9 which on cyclization with orthophosporic acid yielded 5-bromo-7-ethoxy-3-methyl-1, 2, 4-triazolo-[3, 4-b]-benzothiazole 10. All these newly synthesized compounds were screened for antimicrobial activity against E. coli (Gram –ve), B. subtilis (Gram +ve), E. carotovara and Xanthomonas citri using Ampicillin, Streptomycin and Penicillin as a standard for comparison.


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