(③ which Aldehyde or ketone would give rise to the following Aldol Addition pdt. show the mechanism. OOH 0 4 ④CH-E- OCH₂ CH-C-OCH3 2. H 2. Hot 1. Ph-Mg Br →

.TU III u t 10IIIIAI Teporl. OH O OH O H. H. A For the "crossed" aldol reaction that lead to product C, did the kind of base used make any difference to the reaction outcome? If so, what happened? Using bases KOH and LDA

Please draw the major product(s)for the following reaction

2 CH3COOCH,CH3 C2H5O'K*/C2H5OH ---> CH3COCH,COOCH,CH3 [+] Hofmann elimination Clemmensen reduction Claisen condensation O Cannizzaro reaction O Aldol condensation

What is the first step in a base catalyzed aldol reaction?   A. Protonation of Carbonyl group   B. Elimination of Carbonyl with an alkene   C. Formation of an Enolate   D. Elimination of hydroxide   E. Addition of nucleophile to R2C=O

15. Draw the full cleavage of 2-ethoxypropane by HC scheme on your paper, and then draw in the curved arrows for each step of the mechanism. HIC Cie Y="g CI НО CIS HIC end a chat

4. Ehdota mekanismi seuraavalle reaktiolle. / Propose a mechanism for the following reaction. SH OH OH

3. Provide mechanisms for the following reactions. OH a. 18OH b. C. HO H₂180 cat. H H₂O -C=N: cat. H* 180 →EtOH + CH3CH₂CH₂CO₂H cat. CH3SO3H NH

I-O0 I Complete the curved arrow mechanism for this reaction: H HO. HO. TOH CHO. Me H. Me MeOH + Me Me - H20 Me

Show a possible mechanism for the following reaction 1) EtMgBr (еxcess) 2) H20 Et OH Me •Me "Et w..