Aldol addition

58. Which of the following statements describes the first step in the mechanism of the aldol condensation? (A) An alph...
50.下列反應式之主要產物，何者較正確？(A) I (B) II (C) III (D) IV
20. 下式反應的主產物是_____。 (A) 2-hydroxy-2-methylpentanal (B) 2-ethyl-3-hydroxyhexanal (C) 3-ethyl-2-hydroxyhexanal...
12. 下列反應的主要產物為何？ (A) (B) (C) (D)
79. Provide the structure of the major organic product in the following reaction.
39. 在酸催化條件下，丙醛分子進行自身醛醇縮合反應 (self aldol condensation)，生成化合物的結構爲： (A) (B) (C) (D)
20. Which of the following pairs of compounds would be the most reasonable choice for an attempt at a "mixed" or "crosse...
78. How many different β-hydroxyaldehydes and β-hydroxyketones, including constitutional isomers and stereoisomers, are...

寬識(已上榜、感謝阿摩與前輩)