(B.) 45 Whhat is the expected structure of alanine, 11N G COOH CH in a neutral nedium HN--COOH H,N -COOH CH3 H3N'--COO H,N-C-CO0 CH3 CH3 D. HICICB H-C-
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Answer Q45, 46,
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- There is a tick and mosquito repellent DEET (diethyltoluamide) that is prepared by a reaction of diethylamine with m-methylbenzomic acid (m-toluic acid) H+ and heat. What's the structure of DEET?Tunicates are marine animals that are called "sea squirts" because when they are taken out of water, they tend to contract and expel seawater. Lepadiformine is a cytotoxic agent (toxic to cells) isolated from a marine tunicate. During a recent synthesis of lepadiformine, the investigators observed the formation of an interesting by-product (3) while treating diol 1 with a reagent similar in function to PBr3 (J. Org. Chem. 2012, 77, 3390–3400):A chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under thesame conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C.Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structuresof A, B, and C; give equations for their formation; and explain the stereospecificity of these reactions
- 1. Using Br2 in C2H4Br2 will result in HBr and ______. a. C2H3Cl3 b. C2H4Cl3 c. C2H2Cl3 d. none of the above 2. How many halogenation are posible in propane? a. 3 b. 8 c. 6 d. 10 3.Sulfonation of pentane will result in ________ and water. a. C5H11SO3H b. C5H12SO3H c. C5H14SO3H d. none of the above 4.Nitration of hexane will result in ________ and water. a. C6H13SO3H b. C6H15NO2 c. C6H13NO2 d. C6H14NO2 5.How many moles of O2 in heating a C12H26 (dodecane) a. 27 b. 37 c. 24 d. none of the aboveThe alcohol compound güven the formula below iş used in perfume making. Bromine benzeme and -1 synthesis of this compound using the necessary organı and indir chemicals showLike alcohols, ethers undergo a cleavage by breaking a carbon–carbon bond between an alkyl group and the carbon bonded to the ether oxygen atom; that is, the red C–C bond in R–CH2OR' is broken. With this in mind, propose structures for the fragments formed by a cleavage of (CH3)2CHCH2OCH2CH3. Suggest a reason why an ether fragments by acleavage.
- A. The structures of the isomers of C6H10 that for 5 or 6-member rings. 2. complete the following structure for each of the following compound: e.g. write in H, Cl, CH3, etc. a. (2R,4R)-2-bromo-4-methylhexane (pictured below) 7. A 0.5 gram sample of hoodia gordonii isolated from natural sources yields an observed rotation of -0.76° when dissolved in 20 mL of chloroform and placed in a 1-dm cell. Determine the specific rotation [α] of hoodia gordonii for: (a) the entities as defined above,(b) an increase in solute from 0.5g to 1.0 g;(c) an increase in solvent from 20 mL to 40 mL; and (d) an increase in path length from 1 dm to 2 dm.Is cyclohexene (cyclic alkene compund) soluble/insoluble in NaOH? Why?Following are the steps in the industrial synthesis of glycerin. Provide structures for all intermediate compounds (AD) and describe the type of mechanism by which each is formed.
- (a) When cyclopropane is treated with HI, 1-iodopropaneis formed. A similar type of reaction does not occur withcyclopentane or cyclohexane. Suggest an explanation forcyclopropane’s reactivity. (b) Suggest a method of preparingethylbenzene, starting with benzene and ethylene asthe only organic reagents.Chemistry The following chemical trabsformation: the alkene compound X can be isomerized to compound Y by treatment with TsOH. Please draw a detailed stepwise reaction mechanism using arrows to indicate the electron flows.Rank the following groups in order of decreasing priority. −F, −NH2, −CH3, −OH