Question

wa cca 15 necesson 3 which of the following compards can be prepared by a mixea adol Condensaho by tramont of a muhire of the carberyl conpands and Naon? a. 1 6.2 6.3 do y 3) What is the best chake of reagent to achieve following reacha?! G4 Gil a. Hy sou b. Nach 1 a. H₂ Soy b. Nach, H₂0 c. K ой roz Hy sou do LiAlly! Which combinano of Carbonyl conpand & amire can be used to prepare The following product by reductie amination? CHO 1. Ora Code 2 Асно (Hz) (MNH2 ans 3. She (CH₃)₂NH (CH₂), CO NIE сиз Ско a. only I b. only 3 co land 3 d. Mly 2 and 4

Answer 1

-COOH Lol -cocl NHO Pas lol CONH, 2 Por 2 OTC +H₂O 2 In a mixed aldol condensation, it may be two different aldebydle or an aldeb yote & a ketone. In a reach b/w aldehjole and ketone it is always ketone whose Carb anion attacks on aldehyde due to Steric factor. - Hence answer would be (4) in which reactants ! are CH₂ CH₂ CHO and CH-&-che. B This is an oxidation reach for which we use strong oxidising agents like kacro, hence (c) is answer. A Correct answer is (3) Chan + n PH 356 CH3-C-NHA сна CH3 CH3-C=N-CH (CH₂ ) CH-NH-CHTEN,

o mechanisma mez -CH₂ NaOH, mezc- & Ery) -C-H CH₃ CH₂ C thin H₂O HS-CH=CH-8-cme on Mezce-CH2=CH-CHS CHCHE —СН C-Cme OH