Selenium dioxide-mediated synthesis of α-ketoamides from arylglyoxals and secondary amines
摘要:
A facile and expeditious synthetic approach for the synthesis of alpha-ketoamides 3 is described. A series of alpha-ketoamides 3 was synthesized via reaction of selenium dioxide-mediated oxidative amidation between arylglyoxals 1 and secondary amines 2, and accelerated with microwave irradiation. Our findings indicate that constrained amines, such as piperazine and piperidine exhibit higher conversions for this transformation. This reaction was explored by synthesizing a series of alpha-ketoamides 3 from various arylglyoxals 1 with cyclic and acyclic secondary amines 2. (C) 2012 Elsevier Ltd. All rights reserved.
Asymmetric induction during photocyclization of chiral and achiral α-oxoamides within achiral zeolites
作者:Arunkumar Natarajan、V. Ramamurthy
DOI:10.1039/b611387g
日期:——
gamma-hydrogen transfer. While in benzene the major product is oxazolidinone, within an MY zeolite, the main product is a beta-lactam. In this investigation, we have focused our attention on asymmetricinduction in the formation of the beta-lactam product. Two approaches--using a chiral inductor and chiral auxiliary--have been employed. While in solution, in the presence of chiral inductors, achiral
Selenium dioxide-mediated synthesis of α-ketoamides from arylglyoxals and secondary amines
作者:Arthur Y. Shaw、Christine R. Denning、Christopher Hulme
DOI:10.1016/j.tetlet.2012.05.136
日期:2012.8
A facile and expeditious synthetic approach for the synthesis of alpha-ketoamides 3 is described. A series of alpha-ketoamides 3 was synthesized via reaction of selenium dioxide-mediated oxidative amidation between arylglyoxals 1 and secondary amines 2, and accelerated with microwave irradiation. Our findings indicate that constrained amines, such as piperazine and piperidine exhibit higher conversions for this transformation. This reaction was explored by synthesizing a series of alpha-ketoamides 3 from various arylglyoxals 1 with cyclic and acyclic secondary amines 2. (C) 2012 Elsevier Ltd. All rights reserved.
Toda, Fumio; Miyamoto, Hisakazu, Journal of the Chemical Society. Perkin transactions I, 1993, # 10, p. 1129 - 1132