Gcms qp 1000 ex mass spectrometer

All melting points were measured on a Gallenkamp melting point apparatus. The infrared spectra were recorded in potassium bromide discs on a Pye Unicam SP 3–300 and Shimadzu FT IR 8101 PC infrared spectrophotometers. The NMR spectra were recorded in deuterated chloroform (CDCl₃) or dimethyl sulfoxide (DMSO-d₆). On a Varian Mercury VXR-300 NMR spectrometer. Chemical shifts were related to that of the solvent. Mass spectra were recorded on a Shimadzu GCMS-QP1000 EX mass spectrometer at 70 eV. Elemental analyses were recorded on a Elementar-Vario EL automatic analyzer at the Micro-analytical Centre of Cairo University, Giza, Egypt. Formamidine 3 is prepared according to our pervious reported work [39 (link)] (Scheme 6). The Microwave irradiation was carried out on a CEM mars machine. CEM has several vessel types that are designed for their ovens: Closed-system vessels including the HP-500 (500 psig material design pressure and 260 °C), pictured below, have liners are composed of PFA and are ideal for many types of samples. HP-500 Plus vessels are ideal for routine digestion applications. Process up to 14 high-pressure vessels per run with temperatures up to 260 °C or pressures up to 500 psi (Scheme 7).

Melting points (M.P.) were measured on a Gallenkamp melting point apparatus in open glass capillaries and are uncorrected. IR spectra were measured as KBr pellets on a Perking Elmer FT 1000 spectrophotometer (Madison, WI, USA). The NMR spectra were recorded on a Varian Mercury Jeol-400 NMR spectrometer (Tokyo, Japan). ¹H-NMR (400 MHz) and ¹³C-NMR (100 MHz) were run in (DMSO-d₆). Chemical shifts (δ) are referred in ppm and coupling constants J are given in Hz. Mass spectra were recorded on a Shimadzu GCMS-QP 1000 EX mass spectrometer (Tokyo, Japan) at 70 eV. Elemental analysis was carried out on an Elementar Vario EL analyzer (Vernon Hills, IL, USA). Sample Availability: Samples of the compounds 1–10 are available from the authors.

All melting points were measured on a Gallenkamp Melting point apparatus and are uncorrected. The IR spectra were recorded on a Shimadzu FT-IR 8101 PC infrared spectrophotometer (Shimadzu, Tokyo, Japan) using KBr disks. The NMR spectra were preserved on a Varian Mercury VX-400 NMR spectrometer (Varian, Palo Alto, CA, USA). ¹H NMR spectra were run at 400 MHz and ¹³C NMR spectra were run at 75.46 MHz in deuterated chloroform (CDCl₃) or dimethyl sulfoxide (DMSO-d₆) as specified in individual compound characterizations. Chemical shifts are given in parts per million and were referenced to those of the solvents. Mass spectra were recorded on a Shimadzu GCMS-QP 1000 EX mass spectrometer at 70 eV. Elemental analyses were registered on an Elementar-Vario EL (Germany) automatic analyzer.