Question

need help on the last hw problems please explain and answer

43. An unknown compound of formula CeH16 was found to be optically active. On catalytic reduction of the unknown compound over a palladium catalyst, 2 equivalents of hydrogen were absorbed. Ozonolysis of the unknown compound gave two products: one was identified as an optically active dialdehyde of formula CsHaO2; the other compound was identified as acetaldehyde (CH3CHO). The most likely structure of the unknown compound is B. CH.CH-CH-CHECH CH CH CH3 CH CHECH CH-Cc-CH; CH, CH A. CH.CHECH CH CH.CHECH CH3 CH3 с. CHCHECH Cн CHCHCHECH, CH D. 44. Hydroxylation of trans-2-butene with cold, alkaline KMnO4 yields 2,3-butanediol. What is the stereochemistry of the 2,3-butanediol produced by the reaction? A. A single 2S,3R product. B. A racemic mixture of 2S,3R and 2R,3S enantiomers. C.A optically active mixture of 2S,3R and 2S,3S diastereomers. D.A racemic mixture of 2S,3S and 2R,3R enantiomers.

Answer 1

=> ^ u Cahib CH₃-CH=CH-CH-CH₂-CH=CH-CH₂ Hey, Pad lleg.) > и; и, - м-рн , 200₂-CHO , , (optically acture dialdehyde) (As it contains a chirach 44. D Hydroksylation follows syn addition rule M 'Hon on cho (2B, R) Syn add (28,35) Racemic Miss Lymm Transalkure & A racenie mix. of Q R 3R and 26,35 enantiomers is obtained as a product.