Specify both the alcohol starting material and the reagents you would use in each step in a synthesis of the compound shown. If the synthesis requires only two steps enter "none" for step 3. Br Alcohol Starting Materials 1. methanol 2. ethanol 3. 1-propanol 4. 2-propanol 5. cyclohexanol Reagents available a. LiAlH₁ f. PBr3 b. H₂SO4 9. CrO3, H₂SO4, H₂O c. HC1 h. NaH d. HBr i. CH3 MgBr; then H3O+ e. SOC12 j. CH3 CH₂ MgBr; then H3O+ k. CH3 CH₂ CH₂ MgBr; then H3O+ 1. C6H5 MgBr (phenylmagnesium bromide); then H3O+ m. (CH3)2 CHMgBr: then H3O+ n. Dess-Martin periodinane (DMP) Write the number/letters of the alchol/reagents in the boxes below. Alcohol starting material Reagent for step 1 Reagent for step 2 Reagent for step 3
Reactive Intermediates
In chemistry, reactive intermediates are termed as short-lived, highly reactive atoms with high energy. They rapidly transform into stable particles during a chemical reaction. In specific cases, by means of matrix isolation and at low-temperature reactive intermediates can be isolated.
Hydride Shift
A hydride shift is a rearrangement of a hydrogen atom in a carbocation that occurs to make the molecule more stable. In organic chemistry, rearrangement of the carbocation is very easily seen. This rearrangement can be because of the movement of a carbocation to attain stability in the compound. Such structural reorganization movement is called a shift within molecules. After the shifting of carbocation over the different carbon then they form structural isomers of the previous existing molecule.
Vinylic Carbocation
A carbocation where the positive charge is on the alkene carbon is known as the vinyl carbocation or vinyl cation. The empirical formula for vinyl cation is C2H3+. In the vinyl carbocation, the positive charge is on the carbon atom with the double bond therefore it is sp hybridized. It is known to be a part of various reactions, for example, electrophilic addition of alkynes and solvolysis as well. It plays the role of a reactive intermediate in these reactions.
Cycloheptatrienyl Cation
It is an aromatic carbocation having a general formula, [C7 H7]+. It is also known as the aromatic tropylium ion. Its name is derived from the molecule tropine, which is a seven membered carbon atom ring. Cycloheptatriene or tropylidene was first synthesized from tropine.
Stability of Vinyl Carbocation
Carbocations are positively charged carbon atoms. It is also known as a carbonium ion.
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