Mstation jms 700 system

Melting points were determined on open glass capillaries using a STUART Melting point SMP 10 apparatus and are uncorrected. NMR spectra were recorded on a Bruker AMX 500 spectrometer in DMSO-d₆ and reported as δ ppm values relative to TMS at 500/700 and 125/176 MHz for ¹H and ¹³C NMR, respectively. J values were recorded in Hz. HREI-MS spectra were measured on a JEOL MStation JMS-700 system. X-ray data were collected on a Bruker APEX-II D8 Venture area diffractometer, equipped with graphite monochromatic Mo Kα radiation, λ = 0.71073 Å at 100 (2) K. Follow-up of the reactions and checking the purity of compounds was made by TLC on DC-Mikrokarten polygram SIL G/UV₂₅₄, from the Macherey–Nagel Firm, Duren Thickness: 0.25 mm.

Melting points were measured in open-glass capillaries using a STUART SMP 10 melting point apparatus and are uncorrected. NMR spectra were recorder in DMSO-d₆ either on a Bruker AMX 500 or 700 spectrometer. Chemical shifts are reported relative to TMS as δ ppm values. Spectrometers operated at either 500 or 700 MHz for ¹H NMR and 175 MHz for ¹³C NMR. Coupling constants (J values) are given in Hz. High resolution mass spectra (HREI-MS) were measured on a JEOL MStation JMS-700 system. A Perkin Elmer FT-IR Spectrum BX spectrometer was used to record the IR spectra (KBr, ѵ, cm⁻¹). TLC on DC Mikrokarten polygram SIL G/UV254 (thickness: 0.25 mm from the Macherey–Nagel Firm Duren) was used to monitor the reactions and check the purity of compounds.