Replace cach letter (A-E) with the suitable reagents in the following multistep synthetic scheme OH Br OH B D Based on your knowledge of organic chemistry, predict which direction the following acid-base reaction will proceed. Justify your answers without using the pka values BIMGOH which wil decopmse to Mgo and HBr MgBr + b) (CH,COH NANH, (CH,),CONA NH,