名称:
Concomitant morpholine ring contraction and pyridine lithiation in 4-morpholinopyridine: straightforward access to N-pyridyl oxazolidines
摘要:
The reaction of 4-morpholinopyridine with TMSCH(2)Li induced an unprecedented anionic ring contraction of the morpholine ring in an exo-trig mode while lithiating the pyridine ring regioselectively at C-3. The one-pot process offers a straightforward route to functional oxazolidinyl pyridines. (C) 2008 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tetlet.2008.05.127