TETRAPHENYLCYCLOPENTADIENONE-

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University of Massachusetts, Boston *

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Chemistry

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Feb 20, 2024

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pdf

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TETRAPHENYLCYCLOPENTADIENONF— PRELAB Lab Section (Circle One): Mon Tues Thur Fri AM@ 1. What color should your product be? Dark purple Llack 2. What is the name reaction utilized in this experiment? Ats/ Condensafon reaction 3. What s the recrystallization solvent that can be used to purify the product? L/J/}77 a /l] mikbace of (g4 5,444"?/ ard Foluene What functional groups are present in your product? Fetone ¢ Glfene 5. What technique will you use to collect your product? Véhctuum ,////4-4;4'0,7 /Ct‘ffl/'?M using a Hirsch fannel Tetraphenylcyclopentadienone—Prelab 185
6. Ifyou started with 0.274 g of benzil and 0.198 g of dibenzyl ketone: a. What is the limiting reagent? dlzfluy/ /((/p”c b. What is the theoretical yield of tetraphenylcyclopentadienone? Mol henmil = 0-21y4 _ (- k10" SR 210 MRS af procdecct dibcr\z\’l = o;.l__'Q% 2 9.43 X 10 oy Y 38Y.4§ = oBbsz 7. Provide the requested physicgl properties: Melting point, dibenzy! ketone: 22 397 Molecular weight, dibenzyl ketone: 210. 28 Gy [ Melting point, tetraphenylcyclopentadienone: 2155270 °C Molecular weight, tetraphenylcyclopentadienone: 384. 94 Gungs 186 LABORATORY MANUAL FOR ORGANIC CHEMISTRY
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