2. In the synthesis of peptides, carboxylic acids are condensed with amines in the present of a reagent such as dicyclohexylcarbodiimide (DCC) [Section 25.6]. a. Propose a mechanism for the following, using curved arrow notation. H₂N. Мон glycine H₂N. + OH Дон DCC H₂N. .OH OH H glycine gly-gly 1. Propose a detailed stepwise mechanism, using curved arrow notation, for the following. a. H+ N H2O, heat H b. N H 1. LiAlH4 (xs) 2. H₂O H OH Η + H

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2. In the synthesis of peptides, carboxylic acids are condensed with amines in the present of a reagent
such as dicyclohexylcarbodiimide (DCC) [Section 25.6].
a. Propose a mechanism for the following, using curved arrow notation.
H₂N.
Мон
glycine
H₂N.
+
OH
Дон
DCC
H₂N.
.OH
OH
H
glycine
gly-gly
Transcribed Image Text:2. In the synthesis of peptides, carboxylic acids are condensed with amines in the present of a reagent such as dicyclohexylcarbodiimide (DCC) [Section 25.6]. a. Propose a mechanism for the following, using curved arrow notation. H₂N. Мон glycine H₂N. + OH Дон DCC H₂N. .OH OH H glycine gly-gly
1. Propose a detailed stepwise mechanism, using curved arrow notation, for the following.
a.
H+
N
H2O, heat
H
b.
N
H
1. LiAlH4 (xs)
2. H₂O
H
OH
Η
+
H
Transcribed Image Text:1. Propose a detailed stepwise mechanism, using curved arrow notation, for the following. a. H+ N H2O, heat H b. N H 1. LiAlH4 (xs) 2. H₂O H OH Η + H
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