Question

write out the separation scheme for isolating benzoic acid from a reaction mixture if mixinf a grignard reagent phenylmagnisium with dry ice (CO2) in ether.

ad Et PICO, Mar Pn.Ph ? BLO.PCO,H, Ph-Ph HO.HCI, MgBror Add 5% NOH() E O PACO, Separate lower aq layer and set H40, HC, MgBCI" BOCOR Add 5% NaOH (89) two more times Separate lower aq, layer and combine in beaker Removes remaining PMCO Has PhCO2 H,O,NaOH, PCO, Phen Separate lower ag layer and set aside in beaker - Hàn, Na*OH-, PACO Heat 5 min. fremoves residual eher) HO. NaOH PACO H:0. Na'. Cr, H,09 Add HCIH, O Phco,H -118-

Answer 1

7 ph my Br 7 ph-BY & mg Pheong Br l Hal Phar ph-ph+mg Br2 ph cott tmg Byd excess ph-BY gives o when ph mg Br Ph-ph possible react with impaanity. 2) Phcoat + naoh - phcorter & H2O ashear phoonna soluble in Aluas layer. b) phcort soluble in ether layer Corganic lager) It is called as purification by acid base treatment. In the acid basl treatment most organic layer contains impurity this is way we have diminated Imphority Ph-ph. Aquas Ancass layer - keygen eliminates ma Brd, mg BV etchindless ③ phcona + HU - Phcoat + roll th2o Pheah is solid we can filter the solid and need read soluble in water so nad goes through pilted mis LIITTISET

Ren miktance to they & tch twater separate Aquas layer-o ng Bre, mg B72) ether organic laver - (phcoatt, phaph) act5x) salh added separate @ ether organic laxed @ (ph-ph) impartits Aguas layer (Rhco. Na +420) Helt water added FILTER phcool (solid) Amis water & Nachtto
all ready you have the separation procedure with diagrams, I was given explanation. It is a grignard reaction. Thank you.