Conceptual Checkpoint 07.12a-b Provide a systematic name for each of the following compounds: Conceptual Checkpoint 07.12a 3-methyl- v 3-hexene v (a) (S)- No stereoisomerism (E)- (Z)- (R)- Conceptual Checkpoint 07.12b (b)
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- In the following cases rearrange the compounds as directed : (Delhi 2010)(i) In an increasing order of basic strength :C6H5NH2, C6H5 N(CH3)2, (C2H5)2NH and CH3NH2(ii) In a decreasing order of basic strength :Aniline, p-nitroaniline and p-toluidine(iii) In an increasing order of pKb values :C2H5NH2, C6H5 NHCH3, (C2H5)2NH and C6H5NH2Compound A has the formula C5H10O that is produced by oxidation of a conpound that has the formula C5H12O. Compound A has an IT spectrum the has an absorbance at 1700 cm^-1 and no broad absorbance from 2500-3500 cm^-1. The 1H and 13C spectrums of Compound A both have 4 peaks. What is tbe structure of Compound A? Thank you for the help!Qa 18. Bromination of 5a-cholestan-3-one occurs at C-2 or C-4 to give 2 regioisomers. Two unsaturated ketones with lambdamax = 230 nm and lambdamax = 241 nm are yielded during dehydrobromination. Use Woodward-Fieser rules to distinguish between the two.
- Rank the following compounds in order of increasing pKa: (A) para-chlorobenzoic acid (B) meta-chlorobenzoic acid (C) ortho-chlorobenzoic acid (D) benzoic acid a. D, A, B, C b. D, A, C, B c. D, C, B, A d. A, B, C, D e. C, B, A, DThe tosylate of (2R,3S)-3-phenyl-2-butanol undergoes E2 elimination on treatment with sodium ethoxide to yield (Z)-2-phenyl-2-butene. Choose the incorrect Newman projections required for transition state of the reaction. Select all that are correctWhen determining the identity of your unknown neutral product, you analysed it by IR. What feature(s) on your IR spectrum could help you distinguish piperonal from stilbene? Question 9 options: presence of sp2 C-H stretch near 2850 cm-1 presence of C=O stretch near 1700 cm-1 presence of C-O stretch near 1100 cm-1 more than one of the above
- Predict the product of the chemical reaction below. N2 + Na -> __________ NNa NaN NNa3 Na3N NNa2 Answer not listedIdentify the type of the following reaction: production of trans- and cis-2-butene from 2-chlorobutane a. E2 b. E1 c. SN1 d. SN2Three compounds, A, B, and C, have the same molecular formula, C5H6. In the presence of a platinum catalyst, all three compounds absorb 3 molar equivalents of hydrogen and yield pentane. Compounds B and C give a precipitate when treated with ammoniacal silver nitrate; compound A give no reaction. Compounds A and B show an absorption maximum near 250 nm. Compound C shows no absorption maximum beyond 200 nm. Propose a structure for A, B, and C.
- predict the organic product(s) you would obtain by treatment of the compound below with Dess-Martin Periodinane. use the wedge/hash bonds to indicate stereochemistry where it exists if more than 1 major product is possible draw all of them.Question 3 [20]3.1 Propose structures for compounds that fit the following data:a) A ketone with M+ = 72 and fragments at m/z = 57 and m/z = 29(3)b) An alkane with M+ = 86 and fragments at m/z = 71, m/z = 41 and m/z = 15(4)3.2 Propose fragmentation patterns of the molecules below to determine which molecule willshow m/z peaks at 43, 57, 87, 101 and 116:a) Isopropyl bromideb) Propyl chloridec) sec-Butyl isopropyl ether(13)[VII1,2,3] Instructions: Answer the following: (Refer to the photo below) 1. What is the index of hydrogen deficiency of Compound A? 2. How many rings does Compound A contain? 3. How many double bonds does Compound A contain?