Title of article :
A one-pot synthesis of 3,3′-methylenebis(2-arylamino-4H-chromen-4-one) from C-(4-oxo-4H-1-benzopyran-3-yl)-N-arylnitrone
Author/Authors :
Maiti، نويسنده , , Sourav and Panja، نويسنده , , Suman Kalyan and Bandyopadhyay، نويسنده , , Chandrakanta Bandyopadhyay، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2009
Pages :
4
From page :
3966
To page :
3969
Abstract :
2-(Arylamino)-4-oxo-4H-chromene-3-carbaldehyde 3 (R2 = aryl) produces 12H-chromeno[2,3-b]quinolin-12-one 4 when treated with sarcosine, piperidine or diethylamine, but produces 3,3′-methylenebis(2-arylamino-4H-chromen-4-one) 8 when treated with the same amine in the presence of an excess of formaldehyde. Compound 3 (R2 = alkyl) was found to be less reactive than the N-aryl analogues towards the deformylative Mannich-type reaction.
Keywords :
Mannich reaction , 1-Benzopyran , Deformylation , Nitrones , Bischromones , 3-formylchromone
Journal title :
Tetrahedron Letters
Serial Year :
2009
Journal title :
Tetrahedron Letters
Record number :
1864818
Link To Document :
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