A convenient approach for the synthesis of 2,6-diformyl- and 2,6-diacetylpyridines
摘要:
2,6-Diformyl- and 2,6-diacetylpyridines are readily accessed in good yields (60-90%) via the single-pot reaction of 2,6-pyridine dicarboxamides with LiAlH4 or MeMgCI in THF at 0-20 degrees C. The high efficiency of the method illustrates the significance of solubility in the reduction and alkylation of difunctionalized substrates. (C) 2012 Elsevier Ltd. All rights reserved.
Thioisomünchnones versus Acrylamides via Copper-Catalyzed Reaction of Thioamides with Diazocarbonyl Compounds
作者:Vladimir G. Ilkin、Valeriy O. Filimonov、Eugenia A. Seliverstova、Mikhail S. Novikov、Tetyana V. Beryozkina、Aleksey A. Gagarin、Nataliya P. Belskaya、Nibin Joy Muthipeedika、Vasiliy A. Bakulev、Wim Dehaen
DOI:10.1021/acs.joc.2c01352
日期:2022.9.16
was developed by intermolecular copper-catalyzed reactions of diazoacetamides with aromatic and heteroaromatic thioamides bearing a pyrrolidine moiety. The direction of the reaction can be switched toward 2-amino-2-heteroarylacrylamides by replacing the pyrrolidine with an aniline group or by the use of 2-cyano-2-diazoacetamides. The proposed mechanism and DFT calculations allowed us to rationalize the