33499-32-0Relevant articles and documents
An effective Biginelli-type synthesis of 1-methoxy-3,4-dihydropyrimidin-2(1H)-ones
Kolosov, Maksim A.,Kulyk, Olesia G.,Al-Ogaili, Muataz J.K.,Orlov, Valeriy D.
, p. 4666 - 4669 (2015/08/06)
Abstract The ternary condensation of N-methoxyurea, aldehydes, and 1,3-dicarbonyl compounds, resulting in novel 1-methoxy-3,4-dihydropyrimidin-2(1H)-ones has been examined. Commonly used reaction conditions and catalysts (EtOH/HCl, HOAc, DMF) proved to be
Chemoselective reductive nucleophilic addition to tertiary amides, secondary amides, and N-methoxyamides
Nakajima, Minami,Oda, Yukiko,Wada, Takamasa,Minamikawa, Ryo,Shirokane, Kenji,Sato, Takaaki,Chida, Noritaka
supporting information, p. 17565 - 17571 (2015/02/19)
As the complexity of targeted molecules increases in modern organic synthesis, chemoselectivity is recognized as an important factor in the development of new methodologies. Chemoselective nucleophilic addition to amide car-bonyl centers is a challenge because classical methods require harsh reaction conditions to overcome the poor elec-trophilicity of the amide carbonyl group. We have successfully developed a reductive nucleophilic addition of mild nu-cleophiles to tertiary amides, secondary amides, and N-methoxyamides that uses the Schwartz reagent [Cp2ZrHCl]. The reaction took place in a highly chemoselective fashion in the presence of a variety of sensitive functional groups, such as methyl esters, which conventionally require protection prior to nucleophilic addition. The reaction will be applicable to the concise synthesis of complex natural alkaloids from readily available amide groups.
4-Alkoxybenzonitriles from O-Alkyl-4-nitrobenzaldoximes: An Elimination-Aromatic Substitution Reaction
Mauleon, David,Granados, Ricardo,Minguillon, Cristina
, p. 3105 - 3106 (2007/10/02)
-
