... OOMeMeOOMeMeMeOcat. TsOH, PhH–MeOH (2 : 1) Exercise 27OOMeMeOSNOOOBnOBnMeMeOOOBnBnOOHOHSNHCl, MeOH Two Hundred Exercises in Mechanistic Organic Chemistry ... 30OOMeNH2MeMeMeMe OOMeOOMeNMeMe MeMe MeTi(OiPr)4, PhMe+Exercise 31OMeOTBSOMsOMOMMeHMOMOTBAFOOMeHHMeMOMOOMOMExercise 32CH(OEt)2OOHOOPMBMeMeOHOHOPMBOOHOHOEtPPTS, ... because ofextended conjugation.Clive, D.L.J.; Coltart, D.M.; and Zhou, Y., J.Org.Chem., 64, 1447 (1 99 9). Exercise 1271– The trimethyl phosphonoacetate anion reacts with the aldehyde in equilibrium...