Select the reagents for the following transformation. Please enter your answer as a string of capital letters with no space in between, for example: BME A. H₂/Pt F. NaOEt B. 1) NaNH, 2) H,O C. tBuOK G. Br₂/CC14 K. KMnO4, NaOH cold O. 1) BH3. THF 2) H₂O2, NaOH R. 1) 03 2) H₂O V. 1) R₂BH 2) H₂O2, NaOH Y. HCCNa H. EtBr L. Na/NH3 S. H₂/Lindlar's cat. I. HBr D. xs HBr M. HBr, ROOR P. 1) Hg(OAc)2, H₂O 2) NaBH4 T. H30* |W. 1) xs NaNH, 2) H,O Br E. Br₂/H₂O J. 03/DMS N. 1) RCO3H, 2) H30 Q. Br₂, hv U. HgSO4, H₂SO4, H₂O X. xs Br₂/CC14
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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