The Schiff base is an example of a nucleophile. True False
The Schiff base is an example of a nucleophile.
True
False
Homework Answers
A Schiff base (named after Hugo Schiff) is a compound with the general structure R2C=NR' (R' ≠ H).They can be considered a sub-class of imines, being either secondary ketimines or secondary aldimines depending on their structure. The term is often synonymous with azomethine which refers specifically to secondary aldimines (i.e. R-CH=NR' where R' ≠ H).
These Schiff base acts as Electrophile not as nucleophile because of the presence of electrophilic center at Sp2 carbon as shown below-
Amines can act as 1 point O Nucleophiles Bronsted Bases Both as Nucleophile and Bronsted base...
Amines can act as 1 point O Nucleophiles Bronsted Bases Both as Nucleophile and Bronsted base O Neither as Nucleophile nor Bronsted base Clear selection Amides + LiALH4 = amines 1 point True False Imines + NaBH4 = amines 1 point true false amides + Br2 in NaOH = amines 1 point true
4. The Schiff base complex (XX) showed excellent photophysical properties and scientists found ap...
4. The Schiff base complex (XX) showed excellent photophysical properties and scientists found applications in fluorescent microscopy imaging of living cells. [Ref: Yang Hai and coworkers, Chemical Communications 2011, 47, 2435-2437. DOI: 10.1039/c0cc04113k]. Suggest a synthetic scheme for the Schiff base complex (XX). Each building block should contain less than 9 carbon atoms. (6 points)
4. The Schiff base complex (XX) showed excellent photophysical properties and scientists found applications in fluorescent microscopy imaging of living cells. [Ref: Yang Hai and...
what is the mechanism of the synthesis of schiff base ligand. using ortho vanaline and L...
what is the mechanism of the synthesis of schiff base ligand. using ortho vanaline and L alanine.
strong nucleophile weak base strong bulky base strong nucleophile strong base Promote SN2/E2 weak nucleophile weak...
strong nucleophile weak base strong bulky base strong nucleophile strong base Promote SN2/E2 weak nucleophile weak base Promote SN1/E1 Promote SN2 Promote E2 CH Br HS NCT HO CHO CHÚCHO NaNO NaOH NOME Noe HOORS Conjugate acids have pka 16-18 Conjugate acids Recall, you make hydroxide have pka 11 or alkoxide ons from the corresponding alcohol or water and Nat CH,OH (MOH) HO CH,CH,OH (EXOH) | HC-Ć-o to CH tert-BUOK NOCH KOHBU NEOBU The structures above are all ways of...
Schiff-base linkage is found in all of the following enzyme, EXCEPT Group of answer choices Transaldolase...
Schiff-base linkage is found in all of the following enzyme, EXCEPT Group of answer choices Transaldolase aldolase glycogen phosphorylase pyruvate carboxylase none of the above
Draw the structure of a Schiff base between pyridoxal-5’-phosphate (PLP) and the epsilon (E) amino group...
Draw the structure of a Schiff base between pyridoxal-5’-phosphate (PLP) and the epsilon (E) amino group of lysine of an enzyme.
11) Indicate whether the statement about nucleophilicity is or True or False: a) A species with a...
11) Indicate whether the statement about nucleophilicity is or True or False: a) A species with a negative charge is a stronger nucleophile than a similar neutral species. (True / False) b) In particular, a base is a stronger nucleophile than its conjugate acid. (True / False) c) Nucleophilicity decreases from left to right in the periodic table, following the increase in electronegativity from left to right. (True / False) d) The more electronegative elements have more tightly held nonbonding electrons...
What charge would the Schiff-base H2salpn (salicylaldehyde and 1,3-diaminopropane) take if it was to coordinate with [MnIII(AcAc)3]?
What charge would the Schiff-base H2salpn (salicylaldehyde and 1,3-diaminopropane) take if it was to coordinate with [MnIII(AcAc)3]?
will rate thanks Amines can act as 1 point Nucleophiles Bronsted Bases Both as Nucleophile and...
will rate thanks
Amines can act as 1 point Nucleophiles Bronsted Bases Both as Nucleophile and Bronsted base Neither as Nucleophile nor Bronsted base Amides + LiALH4 = amines * 1 point O True O False Imines + NaBH4 = amines 1 point true O false amides + Br2 in NaOH = amines 1 point O true O False
7&8 please 7. True or False: Iodide is the best nucleophile in polar protic and polar aprotic solvents. 8. S...
7&8 please
7. True or False: Iodide is the best nucleophile in polar protic and polar aprotic solvents. 8. Select the alkyl halide that would be expected to undergo the fastest E2 reaction. or yor yor
Amines can act as 1 point O Nucleophiles Bronsted Bases Both as Nucleophile and Bronsted base O Neither as Nucleophile nor Bronsted base Clear selection Amides + LiALH4 = amines 1 point True False Imines + NaBH4 = amines 1 point true false amides + Br2 in NaOH = amines 1 point true
4. The Schiff base complex (XX) showed excellent photophysical properties and scientists found applications in fluorescent microscopy imaging of living cells. [Ref: Yang Hai and coworkers, Chemical Communications 2011, 47, 2435-2437. DOI: 10.1039/c0cc04113k]. Suggest a synthetic scheme for the Schiff base complex (XX). Each building block should contain less than 9 carbon atoms. (6 points)
4. The Schiff base complex (XX) showed excellent photophysical properties and scientists found applications in fluorescent microscopy imaging of living cells. [Ref: Yang Hai and...
strong nucleophile weak base strong bulky base strong nucleophile strong base Promote SN2/E2 weak nucleophile weak base Promote SN1/E1 Promote SN2 Promote E2 CH Br HS NCT HO CHO CHÚCHO NaNO NaOH NOME Noe HOORS Conjugate acids have pka 16-18 Conjugate acids Recall, you make hydroxide have pka 11 or alkoxide ons from the corresponding alcohol or water and Nat CH,OH (MOH) HO CH,CH,OH (EXOH) | HC-Ć-o to CH tert-BUOK NOCH KOHBU NEOBU The structures above are all ways of...
will rate thanks
Amines can act as 1 point Nucleophiles Bronsted Bases Both as Nucleophile and Bronsted base Neither as Nucleophile nor Bronsted base Amides + LiALH4 = amines * 1 point O True O False Imines + NaBH4 = amines 1 point true O false amides + Br2 in NaOH = amines 1 point O true O False
7&8 please
7. True or False: Iodide is the best nucleophile in polar protic and polar aprotic solvents. 8. Select the alkyl halide that would be expected to undergo the fastest E2 reaction. or yor yor
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