591250-19-0Relevant articles and documents
Synthesis of 2-amino-3,4-dihydroquinazolines and imidazo[2,1-b]quinazoline- 2-ones
Mishra, Amita,Batra, Sanjay
scheme or table, p. 3077 - 3088 (2009/12/28)
A straightforward method for the synthesis of 2-amino-3,4- dihydroquinazolines from Baylis-Hillman derivatives is disclosed. The protocol involves sequential SN2 reaction of a primary amine on the Baylis-Hillman acetate derived from 2-nitrobenzaldehyde, c
Straightforward strategy for the stereoselective synthesis of spiro-fused (C-5)isoxazolino- or (C-3)pyrazolino-(C-3)quinolin-2-ones from Baylis-Hillman adducts by 1,3-dipolar cycloaddition and reductive cyclization
Singh, Virender,Singh, Vijay,Batra, Sanjay
scheme or table, p. 5446 - 5460 (2009/05/11)
A straightforward and general approach for the stereoselective synthesis of spiro-fused (C-5)isoxazolino- or (C-3)pyrazolino-(C-3)quinolin-2-ones from the adducts offorded from the Baylis-Hillman reaction of 2-nitrobenzaldehyde and ethyl acrylate by sequential 1,3-dipolar cycloaddition and reductive cyclization is presented. It was found that the reductive cyclization of the isoxazoline derivatives proceeded efficiently in the presence of In/HCl, whereas similar reductions of pyrazolines gave better yields when carried out in the presence of an Fe/AcOH mixture. However, similar attempts employing the Baylis-Hillman adduct of 2-nitrobenzaldehyde and methyl vinyl ketone did not yield the desired compounds. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
Synthesis of substituted 1H- and 3H-1-benzazepines and rearrangement of alkyl 1H-1-benzazepine-2-carboxylates into isoquinolines
Singh, Vijay,Batra, Sanjay
, p. 2970 - 2976 (2008/02/10)
The SnCl2-mediated reduction of nitro groups in 2-nitro-4-(2-nitrobenzylidene)alkanoates and 4-nitro-2-(2-nitroalkylidene) alkanoates allows the facile synthesis of substituted 1H-1-benzazepines and 3H-1-benzazepines. This reaction proceeds via
Synthesis of 3-substituted quinolines via transition-metal-catalyzed reductive cyclization of o-nitro baylis-hillman acetates
O'Dell, David K.,Nicholas, Kenneth M.
, p. 6427 - 6430 (2007/10/03)
Reductive cyclization of o-nitro-substituted Baylis-Hillman acetates by carbon monoxide, catalyzed by [Cp*Fe(CO)2]2, gives moderate to good yields of 3-substituted quinolines.