Carbon Tetrachloride → 5-(1-Tert-butoxycarbonylpiperidin-4-yloxy)-4-chloro-7-methoxyquinazoline

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Reaction Steps

Using an analogous procedure to that described in the portion of Example 31 that is concerned with the preparation of starting materials, 5-(1-tert-butoxycarbonylpiperidin-4-yloxy)-7-methoxy-3,4-dihydroquinazolin-4-one (1 g) was reacted with triphenylphosphine and carbon tetrachloride to give 5-(1-tert-butoxycarbonylpiperidin-4-yloxy)-4-chloro-7-methoxyquinazoline (0.8 g); NMR Spectrum: (CDCl3) 1.5 (s, 9H), 1.9–2.1 (m, 4H), 3.5–3.7 (m, 4H), 3.96 (s, 3H), 4.72 (m, 2H), 6.6 (d, 1H), 6.98 (d, 1H), 8.82 (s, 1H); Mass Spectrum: M+H+ 394 and 396.

Provenance & Evidence