Ultrasound-Promoted Formation of Isopentenyl Alcohol Dianion: Straightforward Synthesis of Perhydrofuro[2,3-b]furans

Alonso Francisco. Rodríguez-Fernández Mamen. Sánchez Daniel. Yus Miguel. Synthesis  2010,  3013 

In Table 1, column 3, entries 1-5, 7, 10, and 11, the abbreviation MW should be US (ultrasound).