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A: a.
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- Arrange the following groups in order of increasing priority. Q.) -CH3 -CH2OH -CH2NH2 -CH2BrThe compound whose structure is shown here is acetyl acetone. It exists in two forms:the enol form and the keto form The molecule reacts with OH–to form an anion, [CH3COCHCOCH3] (often abbreviatedacac–for acetylacetonate ion). One or the most interesting aspects of this anion is thatone or more of them can react with transition metal cations to give stable, highlycolored compounds (a) Are the keto and enol forms of acetylacetone resonance forms? Explain youranswer.(b) What is the hybridization or each atom (except H) in the enol form? What changesin hybridization occur when it is transformed into the keto form?(c) What are the electron-pair geometry and molecular geometry around each C atomin the keto and enol forms? What changes in geometry occur when the keto formchanges to the enol form?(d) Draw three possible resonance structures for the acac–ion.(e) Is cis-trans isomerism possible in either the enol or the keto form of acetylacetone?(f) Is the enol form of acetylacetone polar?…Having one mole of carbon suboxide (C2O3) means that you have
- Arrange the following compounds in the increasing order of reactivity towards Conc.HNO3 & Conc.H₂SO4 1. Benzene 2. Chlorobenzene 3. phenol 4. Toluene 5. Nitrobenzene A 1.2.3.4.5 (B) 5.1,243 5.1.4.2.3 D 5.2.1.4.3Compound A, C5H10O, is one of the basic building blocks of nature. All steroids ans many other naturally occurring compounds are built from compound A. Spectroscopic analysis of A yields the following information. a) how many double bonds and/or rings does A have? b) From the IR spectrum, what is the identity of the oxygen-conataining functional group? c) what kinds of protons are responsible for the NMR absorptions listed d) propose a structure for ACompound B has molecular formula C9H10. The IR spectrum is shown below. The 1H-NMR spectrum shows a multiplet at 7.2 ppm integrating to 4H, a triplet at 2.9 ppm integrating to 4H, and a triplet at 2.1 ppm integrating to 2 H. Suggest a structure for B and explain your reasoning
- For following substituted benzenes: [1] C6H5Br; [2] C6H5CN; [3] C6H5OCOCH3: On balance, does the substituent make a benzene ring more or lesselectron rich than benzene itself?Rank the following substances in order of their expected SN1 reactivity. A) CH3CH2Br B)CH2=CHCH3Br C) CH2=CHBr D) CH3CHCH3Brwhat is the bond line formula of C6H12O2 with respect to given IR spectra and NMR
- Arrange the following compounds in the increasing order of reactivity towards Conc.HNO3 & Conc.H2SO4 1. Benzene 2. Chlorobenzene 3. phenol 4. Toluene 5. Nitrobenzene 5,2,1,4,3 5,1,2,4,3 5,1,4,2,3 1,2,3,4,5A difficult problem in the synthesis of PGF2α is the introduction of the OH group at C15 in the desired configuration. a. Label this stereogenic center as R or S. b. A well known synthesis of PGF2α involves reaction of A with Zn(BH4)2, a metal hydride reagent similar in reactivity to NaBH4, to form two isomeric products, B and C. Draw their structures and indicate their stereochemical relationship. c. Suggest a reagent to convert A to the single stereoisomer X.Draw the structure of the compound you would expect from SN2 reaction of the molecule below with NaCN.