Entry Substrate Product Yield (%) t(min) Melting Point, °C Found Literature 6a 90 35 Oil - 6b 95 26 91-93 90-92[34] 6c 98 20 114-116 110-112[34] 6d 97 22 146-149 143-145[34] 6e 89 28 Oil - 6f 96 30 60-62 57-59[34] 6g 88 40 111-113 110-112[34] 6h 90 34 77-79 75-77[35] 6i 86 39 94-96 91-92[36] 6j 92 38 113-115 - 6k 93 39 147-149 -

Table 5: Conversion of aldoximes into nitriles using KHSO4-SiO2 as a catalyst under Ultrasonication.