Synthesis of fused heterocycles

Xem 1-2 trên 2 kết quả Synthesis of fused heterocycles

Fast and convenient synthesis of new symmetric pyrano[2,3-d:6,5-d']dipyrimidinones by an organocatalyzed annulation reaction

A fast and facile one-pot procedure for the preparation of symmetric 5-Aryloyl-1,9-dimethyl-5,9-dihydro-2H-pyrano[2,3-d:6,5-d']dipyrimidine-2,4,6,8(1H,3H,7H)-tetraone derivatives by two-component reaction of N-methylbarbituric acid and arylglyoxalmonohydrates catalyzed by DABCO in ethanol at 50 ºC is described.

14p tocectocec 25-05-2020 9 1 Download

Synthesis of fused heterocycles from 2-aryl-5-(chlorosulfonyl)-1,3-oxazole-4-carboxylates and α-aminoazoles involving the Smiles rearrangement

Reaction of methyl 2-aryl-5-(chlorosulfonyl)-1,3-oxazole-4-carboxylates with 1H-pyrazol-5-amines and 1H-1,2,4-triazol-5-amines proceeds with the participation of endocyclic aminoazole nitrogen atoms to yield products containing a primary amino group.

10p tocectocec 25-05-2020 9 0 Download