SbCl3

SbCl3

antimony (III) chloride.
CAS # 10025-91-9
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To prepare Sb-S layer, the PbS coated ZnO electrode is dipped into 0.1 M SbCl3 ethanol solution at room temperature for 15 sec, washed with ethanol, and dried by heating in air.
The appearance of greenish-black bands, when the plate was sprayed with SbCl3 solution showed that ethanolic extracts of these medicinal plant leaves contained flavonoids (Figure 2).
Only the saponins and flavonoids were detected when plate was sprayed with CuSO4 solution as well as with SbCl3 solution.
Afterwards, Sodium Borohydride (4g), SbCl3, and [Yb.sub.2][O.sub.3] with appropriate ratios were added, and the mixture was transferred to a 100 mL Teflon-lined autoclave.
Summary: Efficient and fast condensation of anthranilic amide or anthranilic acid with various orthoesters have been carried out using a catalytic amount of Antimony(III) chloride (SbCl3) under microwave irradiation to afford a series of 2-substituted quinazolin-4(3H)-ones in good to excellent yields under solvent free condition.
One of the important features of this methodology is the use of a minimum amount of SbCl3 as an effective Lewis acid catalyst and the avoidance of hazardous organic solvent.
Keywords: Quinazolin-4(3H)-one, Microwave, SbCl3, Solvent-free, Orthoester.
Antimony trichloride (SbCl3) is a useful Lewis acid catalyst with the advantages of inexpensive, easy to treat and good catalytic activity.
Furthermore, to the best of our knowledge, there is no report of the synthesis of quinazolin-4(3H)-ones catalyzed by SbCl3 under microwave irradiation.
2-aminobenzamide (1) (10 mmol), orthoesters (2) (12 mmol) and catalytic amount of SbCl3 were mixed thoroughly in a microwave reactor equipped with a condenser.
Anthranilic acid (4) (10 mmol), orthoester (2) (12 mmol), ammonium acetate (14mmol) and catalytic amounts of SbCl3 were mixed thoroughly in a microwave reactor, equipped with a condenser.
The antimony oxide (a-Sb2O4) was successfully synthesized by hydrothermal technique using SbCl3 and urea in alkaline medium.