What bases are commonly used to deprotonate alpha carbons
The alpha carbon atom in the carbonyl compounds are sp3 hybridised. We need strong bases to deprotonate the hydrogen atoms of alpha carbon atom.
The examples of strong bases uses are as follows
NaOH, or hydroxide bases, NaOEt(Sodium ethoxide) other NaOMe(Sodium methoxide), LDA etc..
what base can be used to completely deprotonate the alpha proton of a ketone? A.(CH3)3COK B.CH3ONa C.LDA D.NaOH
In what form is glucose used to form glycogen? What form of nitrogen is commonly used to form the amino group of amino acids? Which bases are purines and which are pyrimidines? Explain why in fatty acid synthesis fatty acids get added two carbon atoms at a time, while the immediate donor for these carbons contains three carbon atoms.
please explain your answers 6. Circle all of the bases below that can be used successfully to deprotonate phenol (CsHsOH). (0.2 pts) a. KOH b. NHa c. NaHCO3 d. NaH
Which of the following bases can deprotonate a terminal alkyne (check all that apply)? Which of the following bases can deprotonate a terminal alkyne (check all that apply)? CH3CH2Li CH3CH2ON NaH NaNH2 t-BuOK
Pls help Practice 8: Alkynes 1. Strong bases are used to deprotonate (remove a H) alkynes. First, draw the missing base in the box provided by using the products of each reaction. Second, calculate the key for each reaction H HEH + H-CEC: Na* * * H. pka = 26 pka = 37 H-CEC: Na+ + N HH + pka = 36 H-CEC: Na+ HH + + HO H pka = 14 H-CEC + + HH + pka = 62...
Which carbons are alpha carbons in this peptide? н І. || о Н АТ || B ID HN-с-с-N-с-с-N-c-COOH | | C Н Н Н H Н
please explain your answers 5. Circle all of the bases below that can be used successfully to deprotonate CH3OH. (0.3 pts) a. CH3CO2Na b. KOH C. NH3 d. NaHCO3 e. NaNH2 f. NaH
Question 4 The base used to deprotonate diethyl malonate is always ethoxide. The base should be the same as the leaving group on the ester. What would happen if hydroxide was used instead? O Nothing, hydroxide is not a strong enough base to deprotonate diethyl malonate O Hydroxide could also act as a nucleophile and do a saponification reaction on the ester O The decarboxylation step would not work with hydroxide Question 5
Select the conjugate bases that will deprotonate water: H-Cl pKa -7 CH3COO-H pKa 4.8 HO-H pKa 15.7 CH3CH2O-H pKa 16 HC?CH pKa 25 H-H pKa 35 H2N-H pKa 38 CH2=CH2 pKa 44 CH3-H pKa 50
Select all that apply. Which of the following bases are strong enough to deprotonate CH3CH2CH2C CH (pKa 25), so that equilibrium favors the products' CH3ONa O H20 NH3 CH&Li NaCH2(CO)N(CH3)2 NaNH2 Select all that apply. Which of the following bases are strong enough to deprotonate CH3CH2CH2C CH (pKa 25), so that equilibrium favors the products' CH3ONa O H20 NH3 CH&Li NaCH2(CO)N(CH3)2 NaNH2