10 mol % Pd(OAc)2 BUNCI, K₂CO DMF, 100 °C OMe Pd(OAc)2 PhyP (20%) BC Reaction 2 BnO₂C7 OBn MeOOC Identify the structure of Reaction 1's for product A. Explain Reaction 1's mechanism. Justify the product's stereochemistry for A. For Reaction 2, predict the structure of B and C. Clarify your answer. OBn A (10%) Reaction 1
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- Chemistry Give the products of the reaction of 1 mole of 2-methy1-1,3-pentadiene with 1 mole of HBr. Whichproduct(s) will predominate if the reaction is under kinetic control? Which products) will predominateif the reaction is under thermodynamic control?Organotin compounds play a significant role in diverse industrial applications. They have been used as plastic stabilizers and as pesticides or fungicides. One method used to prepare simple tetraalkylstannanes is the controlled direct reaction of liquid tin(IV) chloride with highly reactive trialkylaluminum compounds, such as liquid triethylaluminum (Al(CzHs)3). 3SnCl4 + 4Al(C2H5)3 → 3Sn(C2H5)4 + 4AlCl3 In one experiment, 0.160 L of SnCl4 (d= 2.226 g/mL) was treated with 0.346 L of triethylaluminum (Al(C2H5)3); d = 0.835 g/mL). What is the theoretical yield in this experiment (mass of tetraethylstannane, Sn(C2H5)4)? If 0.257L of tetraethylstannane (d= 1.187 g/mL) were actually isolated in this experiment, what was the percent yield?when H2O2 is added into acidified K2Cr2O7 which colour appears?
- In the following cases rearrange the compounds as directed : (Delhi 2010)(i) In an increasing order of basic strength :C6H5NH2, C6H5 N(CH3)2, (C2H5)2NH and CH3NH2(ii) In a decreasing order of basic strength :Aniline, p-nitroaniline and p-toluidine(iii) In an increasing order of pKb values :C2H5NH2, C6H5 NHCH3, (C2H5)2NH and C6H5NH2Organotin compounds play a significant role in diverse industrial applications. They have been used as plastic stabilizers and as pesticides or fungicides.One method used to prepare simple tetraalkylstannanes is the controlled direct reaction of liquid tin(IV) chloride with highly reactive trialkylaluminum compounds, such as liquid triethylaluminum (Al(C2H5)3). 3SnCl4 + 4Al(C2H5)3 3Sn(C2H5)4 + 4AlCl3 In one experiment, 0.230 L of SnCl4 (d = 2.226 g/mL) was treated with 0.396 L of triethylaluminum (Al(C2H5)3); d = 0.835 g/mL). If 0.335 L of tetraethylstannane (d = 1.187 g/mL) were actually isolated in this experiment, what was the percent yield?Tunicates are marine animals that are called "sea squirts" because when they are taken out of water, they tend to contract and expel seawater. Lepadiformine is a cytotoxic agent (toxic to cells) isolated from a marine tunicate. During a recent synthesis of lepadiformine, the investigators observed the formation of an interesting by-product (3) while treating diol 1 with a reagent similar in function to PBr3 (J. Org. Chem. 2012, 77, 3390–3400):
- Solution:- 3. Determine the amount, in of a (2.20 M s olution of dichloromethane needed to completely react with 15.72g cyclohexene to give 1,2-dibromocuclohexanw. Assume 12% excess is needed in order to react completely. a . How much 1,2 -dibromocyclohexane would theoretically be produced ? c. How many ML of the 2.20 M Br2 solution are required?I’m currently trying to write a lab report for the synthesis of dimolybdenum tetraacetate [Mo2(O2CCH3)4] from the reaction of molybdenum hexacarbonyl, Mo(CO)6 in glacial acetic acid and acetic anhydride under a nitrogen atmosphere, involving the difficult formation of a quadruple bond and requires high heat and long reaction time (approximately 20 hours). But these are the question I’m stumped on: 1. Why need the reaction be done under nitrogen? We also added dichlorobenzene and hexanes during the reaction. 2. Explain the purpose of dichlorobenzene and hexanes. 3. Why does the reaction take 20 hrs?Choose the correct steps in the dehydration of secondary alcohol; then, arrange inchronological order.I - Formation of AlkeneII - Formation of AldehydeIII - Formation of Protonated alcoholIV - Undergoes E2 mechanismV-Undergoes E1 mechanismA. V-III-IB. IV-III-IIC. III-V-ID.III-IV-II Ethanol is heated with an acidified potassium manganate (VII) solution. What would be theproduct of this reaction?A. EthanalB. EtheneC. Ethanoic acidD. Ethane ALL of the following Ether can be prepared by Williamson's method, EXCEPT:A. Ditertbutyl etherB. Ethyl-tert-butyl etherC. anisoleD. Both A & B. Which of the following is not true of SN1 reactions?A. They are favored by nonpolar solvents.B. The concentration of nucleophiles does not affect the rate of reaction.C. Tertiary alkyl halides generally react through this mechanism.D. They occur through a 2-step concerted reaction. Butan-1-ol is formed from which of the following reactant-reaction pairs?A. Butanal - reduction reactionB. Butanone -…
- Based on the more stable conformation (conformation A), need help providing two mechanisms for the E2 elimination of the protonated version of cis-1 using a general base (B:) to give alkenes 2 and 3. Clearly show which hydrogens meet the stereochemical requirements for E2-elimination Using Zaitsev’s rule, indicate which is favoured. Pictured is also a reaction mechanism to show what the alkenes 2 and 3 are. Thank you :)Giventhefollowingsetofreactionsandtheirenthalpies,drawtheBorn-Habercyclefortheformationof LiCl(s)anddeterminethelatticeenergyforLiCl.Reactions:H (in kJ)(1)Li(s)Li(g);Hs= 161;(2) Li(g)Li+(g)+e–;IE= 520;(3) ½Cl2(g)Cl(g);½BE =121.5;(4)Cl(g)+ e–Cl–(g);EA= –349;(5)Li+(g)+ Cl–(g)LiCl(s);UL= ?(UL= latticeenergy)(6) Li(s)+ ½ Cl2(g)LiCl(s);Hof=–408.6._______________________________________________________________________________! (plz give proper explanation)