“…Nevertheless microemulsion synthesis [80] is also a typical method and interesting alternatives are being used based on environmental-friendly synthetic routes: ionothermal [81], microwave, ultrasound-assisted, and sonochemical synthesis [21,25,28], as well as mechanochemistry [82,83]. The synthesis of this type of compounds has been reviewed several times [63,84,85] and therefore only brief details on each technique are presented herein.…”