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The Mannich Reaction of Imidazoles 883 acidified with methanolic hydrogen chloride and the salt was crystallized from EtOH-EtOAc to give 1.12 g, mp 211-212°d ec, and 0.344 g, mp 207.5-5-208.5°dec (23.9%), of 29 hydrochloride. An analytical sample was obtained: mp 209-210°d ec; uv (EtOH) Xmax 219 mM (« 17,700), 276 (8550), 283 (8700), and 293 (inflection, 7650); ir (Nujol) 1640 cm-1 (C=N+); mass spectrum m/e (rel intensity) 228 (100), 213 (6.5), 200 (34), 199 (34), and 171 (16); nmr [(CD3)2S0-D20] 1.42 (t, 3,

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