Interpretation: The hydrogen bond acceptor (A), hydrogen bond donor (D) or both (D/A) should be indicated on the functional groups of the five heterocyclic bases in
Concept introduction:
A parent DNA molecule consists of two poly
A base is nitrogen containing heterocyclic compound which is found in DNA and RNA.
There are mainly five nitrogen bases.
- (1) Adenine
- (2) Guanine
- (3) Cytosine
- (4) Thymine
- (5) Uracil
Hydrogen bond is a type of attractive (dipole-dipole) interaction between an electronegative atom and a hydrogen atom bonded to another electronegative atom.
In DNA, hydrogen bonding is the chemical interaction that underlies and connects the base pairing. The DNA hydrogen bonds are responsible for holding together the double helix structure.
Enol is a tautomer which exhibiting a special type of functional isomerism namely tautomerism.
Tautomerism is a special type of functional isomerism in which isomers are in dynamic equilibrium with each other.
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Organic Chemistry (8th Edition)
- While designing a synthesis, define Reactions that convert one functional group to another—that is, functional group interconversions ?arrow_forwardHighlight the electrophilic carbon in red, and highlight the leaving group in blue. Highlight the atom in the nucleophile that will attack the electrophilic center in green. Only atoms need to be highlighted and not the lone pairs or formal chargesarrow_forwardPlease answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. What is the purpose of deprotonation in the last step of electrophilic aromatic substitution? A) To neutralize the base that is present B) To make room for the electrophile C) To make the ring more reactive D) To restore an aromatic system E) None of the abovearrow_forward
- Place a square around the compound formed in the transformation shown above that is best described as the (Z)-reaction product.arrow_forwardFor the reaction scheme below: (a) Suggest a reagent X that could be used to accomplish the first step. (b) Draw the curly arrow mechanism for the second step in the scheme.arrow_forwardFill in the appropriate reagent or starting material in each of the attachedreaction.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning