Ultrasound in oxochromium(VI)-mediated transformations. 2. Ultrasound-mediated preparation and applications of chromyl chloride

A kinetic study of thioether synthesis under influence of ultrasound assisted phase-transfer catalysis conditions

“…The k app value increased from 0.5 g to 2.0 g of sodium hydroxide (NaOH). It may be due to increase the basicity of aqueous phase [32]. From 2.0 g to 5.0 g sodium hydroxide the k app value tremendously decreased.…”

“…4). So, the sonication along with phase-transfer catalyst, the k app value increases which may be due to induce the surface area, change the size, and morphology of phase-transfer catalyst [32].…”

“…Inventing selective, efficient and eco-friendly methods for applications in complex organic synthetic manipulations constitutes a major chemical research effort. In this regard, several non-conventional methods are emerging that involve reactions in aqueous media [14,15] or those that are accelerated by exposure to microwave [16][17][18] or ultrasound [19][20][21][22] irradiation. These methods are now recognized as viable environmentally benign alternatives [16][17][18][19][20][21][22].…”

Kinetic Investigation of Nitroarylation of Pyrrole with 1-Chloro-4- Nitrobenzene Using a New Multi-Site Phase-Transfer Catalyst under Ultrasonic Condition

“…Currently, anew analytical and process experimental techniques which are environmental benign techniques viz., ultrasound and microwave irradiation have become immensely popular in promoting various organic reactions [13][14][15][16][17]. Ultrasound irradiation is a transmission of a sound wave through a medium and is regarded as a form of energy enhances the rate of the reaction due to mass transfer and effective mixing [18][19][20].…”

New soluble multi-site phase transfer catalysts and their catalysis for dichlorocarbene addition to citronellal assisted by ultrasound—A kinetic study

“…It can increase the rate of reaction, yield and selectivity of desired product under very milder condition [31][32][33][34]. Hence, this technique has been considered as a convenient and environmentally benign technique [31,[35][36][37][38][39][40]. Several studies have been already reported, in which it is observed that the combination of PTC with ultrasound is proved to be an effective technique for organic transformation [41][42][43][44][45][46].…”