A practical one-pot procedure for the synthesis of N–H isoquinolones
摘要:
A practical one-pot procedure for the preparation of N-H isoquinolones has been developed. This 2-step process via C-H activation of N-alkoxyl benzamides and NaH-mediated dealkoxylation reaction has been demonstrated to be a high yielding alternative methodology for the efficient synthesis of a wide range of representative N-H isoquiolones. In addition, the experimental precedent supported mechanism of the dealkoxylation reaction was also proposed. (C) 2013 Elsevier Ltd. All rights reserved.
An atom economical synthesis of isoquinolinones and analogues via ligand-free Pd-catalysed CâH and NâH double activation has been developed. A series of isoquinolinones were obtained in good to excellent yields. Good regioselectivities were also observed during the activation reactions with unsymmetrical alkynes. A practical one-pot procedure for the preparation of NâH isoquinolinones is also described.
A novel method to synthesize isoquinolones via oxidative annulation of N‐alkoxy benzamides and alkynes using binaphthyl‐stabilized palladium nanoparticles (Pd‐BNP) as catalyst has been developed. This methodology affords various isoquinolone derivatives in good to excellent yields with high regioselectivities in the presence of air as oxidant. N‐Methoxybenzothioamide was also found to undergo oxidative
A practical one-pot procedure for the preparation of N-H isoquinolones has been developed. This 2-step process via C-H activation of N-alkoxyl benzamides and NaH-mediated dealkoxylation reaction has been demonstrated to be a high yielding alternative methodology for the efficient synthesis of a wide range of representative N-H isoquiolones. In addition, the experimental precedent supported mechanism of the dealkoxylation reaction was also proposed. (C) 2013 Elsevier Ltd. All rights reserved.