Unripe grape juice (verjuice) as a natural catalyst was successfully applied to perform the one-pot reaction of aryl aldehydes, malononitrile, hydrazine hydrate and ethyl acetoacetate to synthesize pyranopyrazole derivatives in aqueous ethanol at room temperature in excellent yields. Furthermore, unripe grape juice catalyzed one-pot synthesis of hexahydroquinoline-3-carboxamide derivatives by t...

The migration of antimony (Sb) from polyethylene terephthalate (PET) bottling for acidic juices have been assessed in this study. Inductively coupled plasma mass spectrometric (ICP-MS) method was chosen for antimony content determination. Experiments were undertaken at different conditions (15, 25, 35, 45days at 25, 50°C for first use bottle, reused bottle). Two different acidic juices (lemon j...