Write TRUE if the underlined word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true. 1. Aldehydes and ketones generally react in a mechanism known as nucleophilic substitution reaction at the carboxylic oxygen. 2. 1-cyclopentylethan-1-one will test positive in baeyer's test and will test positive in tollen's test. 3. Gulose and idose produce the same osazones. 4. Seliwanoff's test can be used to differentiate sorbose and talose 5. Ribose is a C2 epimer of arabinose and a C4 epimer of xylose. 6. In the test for benzoic acid, boiling-off excess FeCl3 prevents the formation of Fe(OH)3 precipitate. 7. The vapor produced from the base-promoted hydrolysis of propanamide turned the blue litmus paper to red. 8. Anhydrous Na₂SO4 was added in the obtained organic layer to remove excess water. 9. In the synthesis of esters, using acyl chlorides as starting materials instead of carboxylic acids could decrease the product yield. 10. The reaction between N-methylaminobenzoic acid and benzenesulfonyl chloride will produce a sulfonamide that is soluble in excess NaOH. 11. Performing Liebermann's nitroso test on pentanamine will result to effervescence. 12. Reacting a tertiary amine with BSC produces a sulfonamide that is insoluble in NaOH.
Reactions of Ethers
Ethers (R-O-R’) are compounds formed by replacing hydrogen atoms of an alcohol (R-OH compound) or a phenol (C6H5OH) by an aryl/ acyl group (functional group after removing single hydrogen from an aromatic ring). In this section, reaction, preparation and behavior of ethers are discussed in the context of organic chemistry.
Epoxides
Epoxides are a special class of cyclic ethers which are an important functional group in organic chemistry and generate reactive centers due to their unusual high reactivity. Due to their high reactivity, epoxides are considered to be toxic and mutagenic.
Williamson Ether Synthesis
An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.
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