Question

(2) Using pictures and zero words, show how benzyne can act as both an electrophile and a nucleophile. (3) A student accidentally uses toluene to triturate their crude product instead of methanol. Moments after heating their crude product dissolves completely. (a) Explain why the result was undesirable, drawing comparisons between recrystallization and trituration (6) Propose a solution to recover the student's product involving a technique utilized in this lab. (C) Explain the difficulty using the technique proposed in (b) with the solvent that the student has dissolved their product in. (d) Propose a solution to the problem above. (Hint: see page 179, step 2) d States Focus MacBook Air OC

Answer 1

and zero words, show how as both an electrophile and a :2. Using pictures benzyne can act Nucleophile And Example I i E Etapp EtoJet 1. BET Etollý IL - . ome NaNn2. I ome HMPT, 55c L Actas bme Act as Nucleophile anelectéophile o Et ome Example: Diels Alder act as - electrophile mech. as well as Nuclesphile Q.3). A student. Accidently uses toluene to triturate their crude product instead of methanol. moments theit after heating their crude product dissolues - completely. Ma) Explain why the result was undesirable drawing comparison beth recrystallization and trituration - Ans: Tea To this unexpected result come beause the desired product & undesired by-product both dissolue in Toluene Soluent ..

to Trituration process es used to purify Erude product containing soluble impurities A soluent is chosen in which desired product is insoluble and the impurity is very soluble or vice versa, so then insoluble prode desired product filtered by washing the chosen soluent. leaung purified product in solid form. and ampurity in Solution. In Toluene soluent both desicced product and umpurity dissolue .so their is no chance oof Frituration pescess, We can recrystallize the desired product fear from Toluene solution recrystallization technique used to purity compound By dissoluing both impurities and a compound on an aprosopriate soluent making a Saturated Solution solution then allowed to cool. This results in the desired product recrystallise from solution en bigger crystal form. f impurity will be in tultrate, Q.b) propose a solution to recover a product Ano's recrystallization mentioned maborce paragraph . is the techigue to recover the desired product from solution..

2.C) Explain difficulty a proposed an usin sing the technique dissolued their prodie Toluene is the :80 -ns > the soluent that student has. aled their product in it. e is the soluent which we used in becrystallization process. in (b) p. difficulty With soluent is High balling pourt of Toluene (11%) which will take much more time to evaporation & secrystallization, B-d) propose solution to problem above. Arst keep the saturated Solution of product - en Toluene. so it will recrystallize - very fastly. & keep your to Apparatus in bo sunlight. So soluent will exaporate very fast