example of stabilization of PhMgBr by Et2O solvent
Why
is toluene used as the solvent for the formation of the acetal?
p-TSOH toluene OEt Но CH2 CH2 + ОН . CH2 CH2 OEt CH CH3 reflux 2 1 3 2 PhMgBr
Q1: Give an example of a protic nonaqueous solvent dissociation into a cation and anion Q2: Give an example of an aprotic solvent dissociation into a cation and anion 03: - Arrange the following in order of decreasing gas phase acidity - Explain why HF HCI HBr HI
I
am trying to figure out the starting materials, solvent, and
reagent to form the product methyl-2-methyl-3-oxobutanoate. I can
choose from the following starting materials: Methyl acetate,
Methyl propionate, and 1,7-Dimethyl-heptanedioate. I can choose
EtOH or Et2O as a solvent. I can choose the reagents listed in the
picture provided. Which would be best to make the desired product
and what would the mechanism be?
H, SO Ha MCPBAANCE BH BryNaBH, PCC OSO KOHLDA HNO, Sod, NaOH, G0; H₂O 11
Given a solubility data, determine the appropriate solvent to use for recrystallization. please give an example of data and a way to determine appropriate solvent to use for recrystallization. This is needed for the purpose of understanding the concept
42) Which of the following is an example of polar, aprotic solvent? a. hexane C. carbon tetrachloride b. acetone d. ethanol 43) Which of the following is the best leaving group? OH b. OCH d. H0
1. Describe the four main green solvents. Provide one example of the use of each solvent. (10marks) 2. Describe the Beckman rearrangement of cyclohexanone oxime and the formation of ε‐caprolactamium hydrosulfate. (6marks) 3. Explain how liquid‐liquid biphasic chemistry works and give an example of a biphasic system. (6marks) 4. Describe the problems with fluorous solvents. How might some of these problems be overcome? (6marks) 5. Your supervisor has just told you to synthesize a new chemical. How would you choose...
2. (a) For the following reaction, what solvent would favor SN2 (protic or aprotic)? Provide one example of the appropriate solvent. (b) Please explain why you chose your answer for (a). (CH3)3 + CH31 acetone CI oo. cHS Na DMSO + CHES Na DMSO V + oH Ethanoi NH2 + HOANH, CH31 acetone Өон OH (R)-3-bromo-3-methylhexane Previous Next Dashboard Calendar To Do Notifications
2) Acetone, CH,COCH, is a volatile liquid solvent; it is used in nail polish, for example. The standard enthalpy of formation, AH, of the liquid at 25°C is -247.6 kJ/mol; the same quantity for the vapor is - 216.6 kJ/mol. (5 points) a. What is the entropy change when 256 grams liquid acetone vaporizes at 25°C? b. What is the sign of entropy? AS-AH
1. A solution generally consists of two parts, a solute that is dissolved and a solvent that the solute is dissolved into. For example, sugar is a solute that is dissolved into the solvent water. In the Solubility and Temperature Gizmo, you will study how temperature affects how much solute will dissolve in a solution To begin, check that Potassium nitrate is selected, and the Temp. of the water is 20 °C. a. In this solution, what is the solute?...
In the liquid- liquid extraction: A- Soluble compound removes from solid by using a solvent. B- Separating compound from a liquid solution by mixing it with immiscible solvent. C- Example: extraction of chlorophylls from plant leaves by using acetone as a solvent. D- AandB E- BandC