Pinacol coupling of aromatic aldehydes and ketones using TiCl3-Mg under ultrasound irradiation.
Titanium trichloride in EtOH can be reduced by Mg to the corresponding low valent titanium complexes, which can reduce some aromatic aldehydes and ketones to the corresponding pinacols in 8-95% yields within 15-40 min under ultrasound irradiation.
Li
Ji-Tai
JT
College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Hezuo Road No. 88, Baoding 071002, PR China. orgsyn@mail.hbu.edu.cn <orgsyn@mail.hbu.edu.cn>
Lin
Zhi-Ping
ZP
Li
Tong-Shuang
TS