Calculator " Periodic Table Ebook Question 13 of 19 (1 point) The H NMR spectrum of compound A (C15H4O) shows only two signals: a multiplet at 7.15 ppm and a singlet at 3.55 ppm in a 5:2 ratio. The IR spectrum has no absorption in the 3200-4000 cm- region, but strong peaks can be found near 1700 cm-1.Compound A reacts with NaBH4 followed by acidification to give compound B of the molecular formula C15H160. The reaction of A with CH3MgBr, and then with H3C gives C, with a molecular formula of CisHO. Suggest structures for B and C. Hint Check Answer ? View Solution