2010
DOI: 10.1007/s11224-010-9643-5
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Cooperative N–H···N, N–H···O, and O–H···N bonded molecular dimers of two new 3,5-diaryl-1H-pyrazoles

Abstract: Two new 3,5-diaryl-1H-pyrazoles: 3(5)-(4-tertbutylphenyl)-5(3)-(naphthalene-2-yl)-1H-pyrazole (1) and 5-(4-(benzyloxy)phenyl)-3-(furan-2-yl)-1H-pyrazole (2) were synthesized and characterized. Two strong ions peaks [2M] ? and [2M ? Na] ? observed in the ESI-MS spectra are attributed to the dimerization process in solution formed by intermolecular N-HÁÁÁN hydrogen bonds. The crystal structures have been determined by X-ray crystal structure analysis. Compound 1 exists as a pair of tautomers 1a and 1b, and its d… Show more

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Cited by 9 publications
(3 citation statements)
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“…23 Xiaojun Hu and co-workers found out the molecular recognition of thiacalixarenes to Cu 2+ , Zn 2+ , Cd 2+ , Pb 2+ and Ag + by UV spectroscopy and solvent extraction. 24 We rencently reported that GCE modified with p-tert-butylthiacalix [4]arene was used for determination for Cu 2+ , Cd 2+ and Pb 2+ , 25,26 which showed better sensing characteristics in comparison with those based on conventional calix [4]arenes.…”
Section: Introductionmentioning
confidence: 99%
“…23 Xiaojun Hu and co-workers found out the molecular recognition of thiacalixarenes to Cu 2+ , Zn 2+ , Cd 2+ , Pb 2+ and Ag + by UV spectroscopy and solvent extraction. 24 We rencently reported that GCE modified with p-tert-butylthiacalix [4]arene was used for determination for Cu 2+ , Cd 2+ and Pb 2+ , 25,26 which showed better sensing characteristics in comparison with those based on conventional calix [4]arenes.…”
Section: Introductionmentioning
confidence: 99%
“…Although melatonin is safely administered in different doses and times, studies on humans have followed the use of melatonin in stress situations (Guo et al, 2017;Lin et al, 2021;Zhang et al, 2021). For example, It is known that melatonin exhibits anti-inflammatory antiapoptotic activity in hippocampal inflammation induced by chronic stress (Zhang et al, 2022). It is stated that melatonin shows anti-inflammatory and antioxidant activity in colon inflammation and oxidative stress caused by chronic restraint stress (Lin et al, 2021).…”
Section: Stress-induced Infertility and Melatonin Treatmentmentioning
confidence: 99%
“…The prevalence of coronary heart disease, heart failure, and stroke seems to increase with increasing age of the respondents. 2,5,6 The incidence of stroke continues to increase with age. The higher a person's age, the higher the chance of having a stroke.…”
Section: Introductionmentioning
confidence: 99%