Predict the products when 2-pentyne is used with each of the following reagent sets.
a) Na, NH3
b) H2, Lindlar's Catalyst
Predict the products when 2-pentyne is used with each of the following reagent sets. a) Na,...
When do you use Lindlar's catalyst over Na/NH3? For this
question, why was Na/NH3 used to make an alkene in the middle of
the process instead of Lindlar's?
H2 HBr Br Lindlar's NaNH2 catalyst Na, NH3 1) BH3 Br OH 2) NaOH H2O H2O TsC pyridine 2 H2SO4 HgSO4 OTs H20
In each reaction box, place
the best reagent and conditions from the list below.
In each reaction box, place the best reagent and conditions from the list below. You are correct that the third step is a reduction of 2-pentyne. But H2 with a platinum catalyst will reduce it to pentane, while you need an alkene for the next step. NaNH H3C OH HO 2) CH3CH2Br CEC H3C CH3. H3C H2, Pt HO 4) KMno 4, NaOH, H20, cold BH3...
Predict the major organic product or products of each of the
following reactions:
Identify the mechanism taking place in each of the
reactions and please provide explanation.
1. 03 2. Zn/H2O CH,C=CCH, H2 Lindlar's catalyst CH,C=CCH, Li NH3, liquid O3 Zn H2O
Predict all possible products with stereochemistry if applicable. 1.03 2. Zn, AcOH H2, 25 °C 2. W Lindlar's Catalyst 1. Bre, CCIA 2. excess NaNH, NH3(1) 3. H30+ 3. 1 % Pd(PPh34 Š a le in reprehen 4. 100 °C 1. Na, NH3 (1) 2. H2O
In each reaction box, place the best reagent or reactant from the list below. Reagents may be used more than once or not at all. Draw the intermediate products B and C (both are neutral; omit byproducts) acetylene Na/NH3 H2, Lindlar's cat 2-butanone NaNH2 1.2) 1-bromo-2-methylpropane H2, Pd/C NaNH2 NaNH2 2.2) 2.3) Ht step 3 reagent OH
In each reaction box, place the best reagent and conditions from the list below. PH но Ен 2) H3C-CECH - U CH3 + Hacy OH 4) H2. Lindlar's Catalyst KMnO4, NaOH, H20, cold NaOH, H20 CH3CH2CH2Br CH3CH2Br BH/THF H2, Pt CH3Br Na, NH3 (1) NaBH4 NaNH2
thank you!
2. For 2a-2j, predict the product or products for the following reactions. If no reaction occurs for the given conditions write no reaction and explain why there is no reaction. You must indicate the correct stereochemistry where needed in order to get full credit. (3 points each) NOTE: any carbon atom with a start next to it ( C*) indicates that this Carbon atom can be in either the R-or S- absolute configuration. 2a. 1. 2 mol O...
Question 1 Identify reagents that can be used to achieve each of the following transformations: (Several choices may be correct.) Na, NH3 (D 1) xs NaNH2 2) H20 O HBr, ROOR 1) NaNH2 2) C2Hsl H2, Lindlar's Catalyst
Predict the initial and final products for the following
reaction involving 2-pentyne. Hint: the products are isomers and in
equilibrium with each other.
Question 3 Which reaction condition(s) would give the wanted product from the given reagent? CH2CH3 - CH2CH3 NaNH2 in NH3 Na in NH3 H2, and Lindlar's catalyst H2, Pd/C 1. BH3, THE 2. H202, NaOH (aq)