han 6 C-ato petroleum), 12) petxe sulfonic acld, benzaldlul rces want contains m
ID: 1037071 • Letter: H
Question
han 6 C-ato petroleum), 12) petxe sulfonic acld, benzaldlul rces want contains more t henzoic acid, benzene Benzene ar page 17 tetra, pe 44. which of the tolue compound? ollowing would afford a aynthesis of the following afto ra d. IV e. None of these 45. The c, compound which gives 3 signals in the broadband proton-decoupled 3c spectrum could be: a. Heptane b. 2-Methylhexane c. 3,3-Dimethy!pentane d. 2,4-Dimethylpentane e. 2,2,3-Trimethylbutane 46. Which of the following dienes migh t react with bromine in ccl, to yield 2,5-dibromo-3-hexene? a. CH2-CHCH2 CH2 CH-CH2 b. CH2 CHCH-CHCH2 CH c. CH, CH-C-CHCH2 CH d. CH3 CH-CHCH-CHCH3 e. CH3 CH-CHCH2 CH-CH2 47. A prominent M. -18 peak suggests that the compound might be a (n): a. alkane b. alcohol c. ether d. ketone e. primary amineExplanation / Answer
44) the correct answer is : d) IV
because
the reactant given in the IV leads to (4+2) cycloaddition and forms the given product.
and
this reaction is also called Diels-elder reaction in which a conjugated diene and a substituted alkene, commonly termed the dienophile, reacts to form a substituted cyclohexene derivative.
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