Why does the melting point (70-71) above match neither the enantiomers’ nor the racemate’s? Does it mean that the substance is impure, or perhaps isn’t even ibuprofen at all? (Racemic mixture:75-77C, Enantiomer:52-53C)

Q: A mixture containing compounds A and B in methylene chloride (CH2Cl2) was extracted in a separatory…

A: In this question, we will see that which Compound dissolve in aqueous layer and which one dissolved…

Q: What do you stereodifferentiating reaction ? What is chiral auxiliary? How they can help to achieve…

A: A double stereo differentiating reaction generally implies the reaction of two homochiral ligands, a…

Q: Will use Baker's yeast, which can be bought very cheaply from any permarket, in the stereoselective…

A:

Q: stereochemistry of brivaracetum, and it is rather interesting to see the methods they use to…

A:

Q: Using the template structure of sesamin below, label the sets of equivalent hydrogens as H1, H2, H3,…

A: Chemically equivalent nuclei are those which include nuclei present in similar environments. In…

Q: Which of the following compounds will give a positive visible result with the Belstein test? Rich…

A: Positive Beilstein test is given by halides (except fluoride). When Cu wire is heated then a coating…

Q: Many studies have shown that one specific enantiomer of citalopram (“S”) is the one capable of…

A: A chemical substance, called serotonin, present inside the human, helps to control the mood and…

Q: 1. how many stereoisomers are possible for 9,10- dibromo hexadecanoic acid? 2. Addition of bromine…

A: 1- To calculate the number of stereoisomers in a compound, first find the number of chiral centers…

Q: Draw the structure(s) of the major organic product(s) of the following reaction. EPPH • You do not…

A:

Q: What order do you expect the compounds to elute off the column in? Explain why.…

A: In column chromatography, the non-polar molecule elutes first then the polar molecule because the…

Q: After an attempt to resolve a racemate into its entantiomers, the observed rotation is +22.4 degrees…

A:

Q: The carbocation electrophile in a Friedel-Crafts reaction can be generated in ways other than by…

A:

Q: Compound W shows stereoisomerism.  Why are such isomers formed in approximately equimolar…

A: The compound W show racemization. In racemization,optically active compound which contain only one…

Q: Which solvent mixture is more polar: the 50:50 mixture or the 25:75 mixture? Explain briefly What…

A: Hexane is a non-polar solvent while ethyl acetate is a polar solvent. Hence, greater is the…

Q: For the given below ee values, calculate the percentage of each enantiomer present.         60% ee

A: Constitutional isomers can be defined as the molecules which have the same molecular formula and…

Q: Rank and explain your ranking of the following chlorides of group 15 in the order of increasing iv)…

A: Ionic compounds have positively charged cation and negatively charged anion due to which a dipole…

Q: Based on Steric Effect and Electron Delocalization Explain: 1. Phenol is not easily attacked by a…

A: An activating group is the one which increases the reactivity and directs the substituent to enter…

Q: show an arrow pushing mechanism for the reaction between α-phellandrene and maleic anhydride.…

A:

Q: classify the structures of subgroups of lignans in the image according to IUPAC and correlated them…

A: The lignans are a large group of low molecular weight polyphenols found in plants, particularly…

Q: a) Circle the terms that correctly describe Molecule A. NH contains ester contains amide contains…

A:

Q: classify the structures of subgroups of lignans in the image according to IUPAC and correlated them…

A: Lignans are large branched structures, that contain two phenylpropane units. These molecules act as…

Q: % of KCIO3 in unkown

A: We have to find the % of KCIO3 in unkown

Q: Which of the following is true about ANY (S) -enantiomer? A It is levorotatory. B It is the mirror…

A:

Q: Why is alkoxide (RO-) a stronger base than Chloride? Why are alcohols typically poor electrophiles?

A: 1. alkoxide ions are better proton acceptors as compared to hydroxide ion which makes them stronger…

Q: Discuss the truth of the following statement. Explain why it is true or false Every SN1 reaction…

A:

Q: For each of the following substituted benzenes: [1] C6H5Br; [2] C6H5CN; [3] C6H5OCOCH3:a. Does the…

A: a)The inductive effect appears in molecule due to difference in electron negativity of atoms. The…

Q: (d) Consider the following structure of compound C: Compound C i. Assign E or Z to the double bond…

A: Given compound is:

Q: Please indicate the correct stereochemistry for each chiral center in the product.

A:

Q: (a) Give a plausible explanation for each one of the following :(i) There are two – NH2 groups in…

A: It is a derivative of urea. Semicarbazide is the chemical compound with the formula OC. It is a…

Q: Compound W shows stereoisomerism.

A:

Q: What are the stereochemical configurations of the two diastereomers of (2S,4S)-2,4-hexanediol? Write…

A:

Q: How could the optical purity of the (S)-(-)-α-methylbenzylamine be increased by further experiments

A: Enantiomers are optical isomers that are isomers have same physical and chemical properties but…

Q: Compound C undergoes a chemical reaction with a reagent, resulting in the formation of two new…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: 2. Carefully draw the structures of the models that you have made using proper stereochemical…

A: Isomers having non- superimpossible mirror image relationship, called enantiomers.  Isomers having…

Q: Mention in case there are differences in physicochemical parameters of the enantiomers. 2. Mention…

A: Hello. Since more than one question has been asked, the first question shall only be answered in…

Q: what is prefromulation steps of phenylbutazone ?with illustration?

A: The stage of the development during which physiological properties of a drug substance are…

Q: Draw all the resonance forms for the sigma complexes corresponding to bromination ofaniline at the…

A: Concept introduction: Nitrogen atom of -NH2 group in aniline contains a nonbonding pair of…

Q: NaOCH2CH3 LOCH2CH3 H3CH2CO

A: This reaction occur via intramolecular cleasion condensation reaction pathway.

Q: A mixture contains equal amounts of compounds A–D. a.Which compounds alone are optically active? b.…

A: a. Optical active compounds are those where non-superimposable images are formed. They have a chiral…

Q: Which group in following pair is assigned the higher priority? −CH2Br, −CH2CH2Br?

A: In R, S nomenclature, the atom or the group which has highest atomic number.

Q: Draw all the resonance forms for the sigma complexes corresponding to bromination of aniline at the…

A: Resonance structures defined as these structures are the Lewis structures which have the same…

Q: Draw out the reaction that takes place between phenylsuccinic acid and proline as well as the second…

A: reaction that takes place between phenylsuccinic acid and proline as well as the second reaction…

Q: Draw all the resonance forms for the sigma complexes corresponding to bromination ofaniline at the…

A: All the resonance forms for the sigma complexes corresponding to bromination of aniline at the ortho…

Q: You came across an article debating the use of Prevacid® vs. Nexium®.  While both drugs have the…

A: Recemate means recemic mixture (equimolar mixture of two enantiomers)

Q: (1) Structures __________ and ____________ are enantiomers. (2) Structures __________ and…

A: Given; structure

Q: ANSWER ALL AND WILL GIVE YOU THUMBS UP AND RATE YOU GOOD Classify the following examples to the…

A: Bentonite- suspending agent Kaolin - suspending agent Lecithin -emulsifying agent Carbomer-…

Q: 1.) Why are functional group interconversions controversial? (double bonds into epoxide) 2.) Explain…

A: A double bond (alkene) converts into an epoxides as : Functional group modification or…