Question
In: Chemistry
Compound A is a D-aldopentose that can be oxidized to an optically active aldaric acid B....
Compound A is a D-aldopentose that can be oxidized to an optically active aldaric acid B. On Kiliani-Fischer chain extension, A is converted into C and D; C can be oxidized to an optically inactive aldaric acid E, but D is oxidized to an optically active aldaric acid F. What is the structure of compound E?
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
Compound A is a D-aldopentose that can be oxidized to an optically active aldaric acid B....
Compound A is a D-aldopentose that can be
oxidized to an optically active aldaric acid B. On
Kiliani-Fischer chain extension, A is converted
into C andD; C
can be oxidized to an optically inactive aldaric acid
E, but D is oxidized to an
optically active aldaric acid F.
What is the structure of compound C?
The aldaric acid of D-glucose is the same as the aldaric acid of which sugar? The...
The aldaric acid of D-glucose is the same as
the aldaric acid of which sugar?
The aldaric acid of L-talose is the same as the
aldaric acid of which sugar?
1.) What other D aldohexose gives the same alditol as D-talose? 2.) A. The aldaric acid...
1.) What other D aldohexose gives the same alditol as
D-talose?
2.) A. The aldaric acid of D-talose is the same
as the aldaric acid of which sugar? (Choices: L-allose, D-altrose,
L-galactose, L-glucose, L-gulose, D-idose, D-mannose,
D-talose.)
B. The aldaric acid of L-altrose is the same as
the aldaric acid of which sugar?
3.) A. Which aldopentose gives the same aldaric acid as
D-ribose? (Choices: D-ribose, D-arabinose,
D-xylose, D-lyxose, L-ribose, L-arabinose, L-xylose,
L-lyxose)
B. Which aldopentose gives the same aldaric...
What does it mean for a molecule to be optically active?
What does it mean for a molecule to be optically active?
1)When optically active (R)-2- methyl cyclohexanone is treated with aqueous acid , its optical activity is...
1)When optically active (R)-2- methyl cyclohexanone is
treated with aqueous acid , its optical activity is lost, Explain
the observation in detail.
2)Why is acid catalysed halogenation of ketones
generally prefered over the base promoted halogenation?
3)Provide a detailed ,stepwise mechanism for the
Robinson annulation reaction between 2- methyl cyclohexanone and
methyl vinyl ketone (But-3-en-2-one
4) Give the correct structures for the compounds A to
C in the following reaction schemes:
Acetophenone + pyrole (in acidic ) = A +...
An aqueous solution containing 10g of an optically pure compound was diluted to 500 mL with...
An aqueous solution containing 10g of an optically pure compound
was diluted to 500 mL with water and was found to have a specific
rotation of -133 degrees. If this solution were mixed with 500mL of
a solution containing 6g of a racemic mixture of the compound, what
would the specific rotation of the resulting mixture of the
compound? What would be its optical purity?
A compound of molecular formula C7H13Br is a tertiary bromide, is optically inactive, and has one...
A compound of molecular formula C7H13Br is a tertiary bromide,
is optically inactive, and has one primary carbon atom. C7H13Br is
inert to catalytic hydrogenation. C7H13Br is reacted with another
unknown compound. Thin-layer chromatography of the product mixture
shows that two products are formed. GC analysis shows that the two
products are formed in unequal amounts. Upon isolation from each
other via distillation, both isolated products are optically
inactive. Both products de-colorize molecular bromine.
Answer questions a-c below.
a. Based...
An aqueous solution containing 10 g of an optically pure compound was diluted to 500 mL...
An aqueous solution containing
10 g
of an optically pure compound was diluted
to
500 mL
with water and was found to have a specific rotation of
−111
°
.
If this
solution were mixed with
500 mL
of a solution containing
7 g
of a racemic mixture of the compound, what would the
specific rotation of the resulting mixture of the
compound?
What would
be its optical purity?
[
α
]D =
Optical purity = %
Aldaric acid synthesis expirament Other oxidation products are possible for galactose but do not affect the...
Aldaric acid synthesis expirament
Other oxidation products are possible for galactose but do not
affect the isolation of galactaric acid. Why?
Water is a/an _______ a) Element b) Compound c) Pure substance d) Mixture
Water is _______
a) An element
b) A compound
c) A pure substance
d) A mixture
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