The following diene can undergo ring-closing metathesis in the presence of a ruthenium catalyst. Draw the...
Draw the diene that you would use to prepare the following compound via a ring-closing metathesis reaction. ? Edit Analyze the structure of the product and determine which bond(s) can be made via a Heck reaction. "S 16 za como с Identify the starting organohalide and akene. Draw organohalide. Represent it as an iodide (because iodides are more reactive than bromides or chlorides): ? Edit Draw akene: ? Edit
Draw the major organic products of this olefin metathesis reaction. Ignore stereochemistry. Ru catalyst 2 equiv.
Draw the major organic products of this olefin metathesis reaction. Ignore stereochemistry. Ru catalyst 2 equiv.
4. Draw the product of the following Grubbs Ring ring opening metathesis, where compound 29 is Grubb's catalyst. (4) CR 10 equiv. niwolontho 29 (xx mol %) HOV DCM, 22 °C
what is the mechanism for this reaction?
You will be carrying out a ring closing metathesis reaction on diethyl diallylmalonate using Grubbs' Second Generation catalyst. After you have done the reaction once, you will have an opportunity to design and carry out variations of the reaction, in order to study the effects of different variables on the reaction. Your results will allow us to refine the experiment for future CSU chemistry majors. GG2 CH,CI Grubbs' Second Generation Catalyst (GG2):
The reaction can be speeded up by using a catalyst that reduces the activation energy. The most popular catalysts are based on iron (Fe) and ruthenium (Ru). The table shows the variation in the concentration of N2(g) as a function of time for a reaction carried out at 500 °C and 200 atm in the presence 0 0.2 0.3 0.4 0.5 0.6 of an Fe catalyst: [N,(e)] (mol/L) 2.00 1.68 1.42 1.19 1.01 0.846 0.710 0.1 7. Use these data...
The reaction can be speeded up by using a catalyst that reduces the activation energy. The most popular catalysts are based on iron (Fe) and ruthenium (Ru). The table shows the variation in the concentration of Nz(g) as a function of time for a reaction carried out at 500 °C and 200 atm in the presence 0 0.1 0.2 0.3 0.4 0.5 0.6 of an Fe catalyst:. IN,(e)] (mol/L) 2.00 1.68 1.42 1.19 1.01 0.846 0.710 7. Use these data...
Extra credit 2 (8 pts) The above dimethyl-substituted hexatriene can undergo a ring-closing reaction called an electrocyclic reaction. Shown above are two possible products. In fact, only one of the two possible products is formed. This reaction is controlled by orbital symmetry. The key orbital is the HOMO of the triene, which must be converted to an MO of the product. That is, the terminal p lobes of the triene HOMO must twist to overlap and form a sigma bond....
Draw the products of the following reactions when the diene and
dienophile are heated.
Draw the products of the following reactions when the diene and dienophile are heated.
10. We learned in class that epoxides undergo ring-opening reactions in the presence of strong nucleophiles. Grignard reagents can serve as suitable nucleophiles for ring-opening of ethylene oxide. This reaction serves as an efficient strategy for adding carbon chain length and a hydroxyl functionality for synthetic purposes. RMgX + BVOH + HOMEX Grignard reagent ethylene oxide 1 alcohol (after aqueous work-up) a. Draw a mechanism for the reaction of isopropyl magnesium chloride with ethylene oxide. b. Show how a Grignard...