Seismic Behavior Analysis and Earthquake Damage Prediction of Buildings in Langfang

Abstract

Polyphenylalkane derivatives Q 0720Studies on the Lanthanum-Induced Pinacol Coupling of Aromatic Aldehydes and Ketones in Aqueous Media. -Ultrasound irradiation can efficiently prompt pinacol coupling of aldehydes in acidic aqueous media in the presence of La. In contrast, aromatic ketones show much lower reactivity due to the steric hindrance around the carbonyl group. -(BIAN*, Y.-J.; YU, X.-G.; PENG, H.