Milled and efficient synthesis and structural study of ۴-phenylsulfonyl-۲,۳,۵,۶-tetrachloropyridine
محل انتشار: دوفصلنامه تحقیقات شیمی آلی، دوره: 6، شماره: 1
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 63
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شناسه ملی سند علمی:
JR_ORGC-6-1_003
تاریخ نمایه سازی: 3 مهر 1402
چکیده مقاله:
۴-phenylsulfonyl-۲,۳,۵,۶-tetrachloropyridine was synthesized by the reaction of pentafluoropyridine with sodium benzenesulfonate under ultrasonic irradiation. This new methodology provides the excellent yield in a very short reaction time at ۰ oC. In the presence of ultrasound irradiation, the yield was ۹۰% after ۸ min, by using our previously established method the yield was ۸۵% after ۱۰ h. Also, in this research, the substituent effect in meta and para position of phenyl ring on intramolecular halogen bond strength has been investigated by theoretical studies. The calculations were performed with Gaussian۰۹ software in M۰۵-۲X/۶-۳۱۱++G(d,p) level. The results show that one of the oxygen atoms of the SO۲ group is co-planer with the pyridine ring and the other oxygen atom is out of this plane. Also, it is observed that the electron-withdrawing groups in meta and para positions reinforced the halogen bond that the oxygen atom of the SO۲ group is co-planer with pyridine ring. An opposite behavior is observed for electron-donating groups.
کلیدواژه ها:
نویسندگان
Marziyeh Mohammadi
Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan,Iran
Reza Ranjbar-Karimi
Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
Marjan Ghafari
Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
Ali Reza Poorfreidoni
Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran