Why is there a difference in racemization for the two reactions even though they both include the leaving group being replaced by the same molecules?
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Why is there a difference in racemization for the two reactions even though they both include the leaving group being replaced by the same molecules?
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- What reagents are appropriate to carry out the conversion shown? - OH LOM 1. mCPBA; 2. CH3MgBr; 3. H₂O O 1. CH3MgBr; 2. H₂O O 1. mCPBA; 2. H₂O O mCPBA + enantiomerWhich conditions are expected to give the enantiomerically pure epoxide product in high yield? OH y O tBuOOH. Ti(OiPr)4. (-)-DET ⒸmCPBA OtBuOOH, Ti(OiPr) (+)-DET O None of the choices are correct. O All of the choices are correct. 1) Br₂, H₂O: 2) NaH OHAlthough diazomethane (CH2N2) is often not a useful reagent forpreparing cyclopropanes, other diazo compounds give good yields ofmore complex cyclopropanes. Draw a stepwise mechanism for theconversion of diazo compound A to B, an intermediate in the synthesisof sirenin, the sperm attractant produced by the female gametes of thewater mold Allomyces.
- Melamine, used as a fire retardant and a component of the writing surface of white boards, can be prepared from s-trichlorotriazine through a series of SNAr reactions with ammonia. The first substitution takes place rapidly at room temperature. The second substitution takes place near 100 °C, and the third substitution requires even higher temperature and pressure. Provide an explanation fatr this reactivity.What was the starting alkyne and the corresponding reagents for the formation of (this is acetylide formation): CH;CH2CH2C=C-H H-C=C–H and NaNH2, NH3 , CH3CH2Br B H-C=C–H and NaNH2, NH3 , CH;CH2CH2CH2B. H-C=C-H and NaNH2, NH3, CH3CH2CH,Br D Н—СЕС—H and NaNH2, NH3, CH;CH2CH2CH,CH,BrWhich of the following molecules will NOT lead to a successful synthesis of a Grignard reagent upon reaction with magnesium? CI https://ibb.co/54Jw34p 2 Me. OMe https://ibb.co/6655LTH Br но https://ibb.co/2nfzPmX O Me `Br https://ibb.co/wo93ymS 2 Br MeO https://ibb.co/Hq2s6ck 2
- Give strucutre of products formed including stereochemistry if appropriate. If more than one product is formed, indicated which is the major product or if formed in equal amounts. PhMgBr (2 equiv.) then H30* HO, он он РСС ноV. @Given the following mechanism fer me Y OCHS NaOH reaction show the detailed conversion of A to B •OCN3 CH3OH. OH (A) (B) c Ⓒ using the same detailed mechanism instead of cyclonexare ring as shown in product. B, propose and fer a product wil a cyclopentane ning instead of a cyclohexane viny. Ⓒ Exploumpand I with why campand (B) is preferred over the campanay campand with a cyclopentake ring..Provide to llaving Br a detailed, step by step mechanism for the reaction OCH₂CH3₂ OCH₂CH3 OCH₂ CH3
- 3) Show how you would synthesize the following Compounds, storting with benzene or toluene ond ASSume any necessory pro duct (ond seperoble from ortho) in ortho, pora reogents, poro is the mogor mixture c)o- chlorobenzoic ocid d) m- chloronitro benzeneOptical activity of product of (S)-CH3CH(Br)COOCH2CH3 + NaCN a. None of the choices O b. (R)- Ос. racemic O d. (S)-H. H ÔMe Ph;P LIAIH4 compound a compound b HO. Bombykol C16H300 The above reaction scheme presents one possible synthesis of the compound. Work out the synthesis on a separate sheet of paper, and then draw the structure of compound b. Consider E/Z stereochemistry of alkenes. Do not show stereochemistry in other cases.