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Syntheses of analogues of 5b.
Reagents: i. 1-(Chloromethyl)-4-methoxybenzene, DBU, THF, 150 °C; ii. 1-(Chloromethyl)-4-methoxybenzene, DMF, 120 °C; iii. N,N-diethylpropan-2-amine, toluene:2-propanol (4:1), 70 °C; iv. (a) H2, Pd/C, 60 psi, MeOH; (b) Benzoic acid, HBTU, Et3N, DMAP, DMF.
