摘要: The reaction of O-hydroxybenzaldehydes with methyl 3-aminocrotonate in acetic acid at room temperature yields methyl 2,4-dimethyl-5-oxo-5 H-[1]benzopyrano[3, 4- C]pyridine-1-carboxylates, in 22-42% yield.关键词:Linkage helicity magnetohydrodynamics solar magnetism ...
aD51149 和 D51161樣品費確認 D51149 and the D51161 sample spends the confirmation[translate] aNigeria Boko Haram attack 'kills 63' in Damaturu 正在翻译,请等待...[translate] arivitalizzante 正在翻译,请等待...[translate] adate in 日期[translate] ...