Gemini 300 bb spectrophotometer

Melting points are uncorrected and have been measured on a Stuart melting point apparatus (Stuart Scientific, Redhill, UK). On the Shimadzu IR 435 spectrophotometer, the IR spectra (KBr) were calculated and values are shown in cm⁻¹. Using a Varian Gemini 300-BB spectrophotometer, the ¹H-NMR (400 MHz) and ¹³C-NMR (100 MHz) spectra were carried out (Bruker, Munich, Germany), using tetramethylsilane TMS as internal standard. Splitting patterns have been designated as follows: s: singlet; d: doublet; t: triplet; m: multiplet and chemical shift values are reported in ppm on δ scale. Progress of the reactions was tracked by TLC using TLC sheets precoated with Merck 60 F 254 UV florescent silica gel and visualized them using UV lamps. The chemicals used are supplied by Across from (New Jersey, USA). At the Microanalytical Center, Al-Azhar University, elemental analyses were performed.

Melting points were uncorrected and determined on a Stuart melting point apparatus (Stuart Scientific, Redhill, UK). Elemental analyses of C, H and N were performed on a Perkin-Elmer 2400 analyzer (Perkin-Elmer, Norwalk, CT, USA). The IR spectra (KBr) were measured on a Shimadzu IR 435 spectrophotometer and the values are represented in cm⁻¹. ¹H NMR (400 MHz) and ¹³C NMR (75 MHz) spectra were carried out using a Varian Gemini 300-BB spectrophotometer (Bruker, Munich, Germany). Splitting patterns were designated as follows: s: singlet; d: doublet; t: triplet; m: multiplet, and chemical shift values were recorded in ppm on a scale. Mass spectra were run on a Shimadzu Qp-2010 plus. The progress of the reactions was monitored by TLC using TLC sheets pre-coated with UV florescent silica gel (Merck 60 F 254), and was visualized using a UV lamp. The chemicals used were supplied from Acros (New Jersey, USA).