Question

4. For each of the following transformations select the most appropriate reagent(s). 0 - 0 $- a. 1) NaBH/EtOH 2) H:0 b. 1) LiAlH/Et, 2) H30 c. H , Pd/C d. None of the above e. All of the above 5. For each of the following transformations select the most appropriate reagent(s). (2 points) HO a. 1) NaBH/EtOH 2) H:0* b. 1) LiAlH4/Et20 2) H:0 c. None of the above d. All of the above

Answer 1

Q4. For each of the following transformation the most appropriate Vergent : select A ey Mb, pdf Carbon, carbon double bond selectively redneed in presence of carbonyl- carbon by using palladium on Carbon as cabalyet while hydrogen gas pressure. | All other options are not suitable because they can reduce both functional group that is carbonyl Carben & carbon-carben double bond. so correct option is c) h, pale 21 H n g Mapy Eton L carbonyl-carbon select/ vely reduced into correspond - ing alcohol by using sodium borohydride in ethanol, Here sodium borohydride selectively reduced carbonyl group only carbou-carbon double bond remein as such! So correct option is a) NaBH4 | Eton 27 Hoo 1 For each of the following transformation select the most appropriate reageht:

Page No TOEt af Hab H4 Eton H A reduction of carbonyl-carbon in presence of ester fumetion grow can be carried out by using sodium borohydride in ethenol, here sodium boso hydride is reduce only carbonyl-carbon into corresponding akohol. Дmy GATH JEE40 q). NaBh4 letoH 6). LiAlH4 Et. ң Ha н — # LIATHA lithium aluminum hydride is stronge redueing vergent it can reduce both Grbanyl group group into correspond # Noрн — I sodiumo borohrdride also reduce both carbonyl group ! into alcohol as result mentioned product can also expected by using NaBt4 letoy. So correct option is d) All of the above