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The pinacol coupling reaction of aromatic aldehydes and ketones was carried out in 26–98% yield with Al in aqueous NaOH–MeOH under ultrasound irradiation at r.t. within 30 min.
The project was supported by National Natural Science Foundation of China (29872011), Educational Ministry of China and Educational Department of Hebei Province (99014). The project was supported by Natural Science Foundation of Hebei Province (299080).
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