M. Palucki et al., A highly efficient synthesis of 2-[3-aminopropyl]-5,6,7,8-tetrahydronaphthyridine via a double Suzuki reaction and a Chichibabin cyclization, TETRAHEDR L, 42(39), 2001, pp. 6811-6814
Synthesis of 2-[3-aminopropyl]-5,6,7,8-tetrahydronaphthyridine was accompli
shed via a one-pot double Suzuki reaction followed by deprotection and a hi
ghly regioselective intramolecular Chichibabin cyclization. A variety of re
actions conditions were screened for the Chichibabin cyclization including
choice of base, solvent and reaction temperature. (C) 2001 Published by Els
evier Science Ltd.