33470-03-0

Upstream product

• 82776-41-8 3-(dietilammino)-1-(2-idrossi-1-naftil)-3-immino-1-propen-1-olo 
• 52053-83-5 3-(diethylamino)-2-morpholinomethyl-1H-naphtho[2,1-b]pyran-1-one 
• 63961-65-9 2-(diethylamino)-7-methoxychromone 
• 685-91-6 diethylacetamide 
• 2283-08-1 2-hydroxy-1-naphthalenecarboxylic acid 
• 82776-33-8 3-(dietilammino)-5-(2-idrossi-1-naftil)isossazolo 

Downstream Products

• 68902-35-2 3-(dietilammino)-1H-nafto<2,1-b>piran-1-tione 
• 52053-83-5 3-(diethylamino)-2-morpholinomethyl-1H-naphtho[2,1-b]pyran-1-one 

Relevant academic research and scientific papers

Efficient one-pot synthesis of N-substituted 2-aminochromones, their benzo-fused derivatives, and diaminobenzodipyrandiones of two new structural classes

N-Substituted 2-aminochromones and their benzo-fused derivatives were obtained in high yields by a new one-pot synthesis, starting from the appropriate acetamides, salicylic acid or its benzo-fused derivatives, and phosphoryl chloride. By the same reaction, from suitable dihydroxybenzenedicarboxylic acids, some compounds of two new structural classes, 2,7-diaminobenzo[1,2-b:4,5-b']dipyran-4,9-diones and 2,8-diamino-4H,6H-benzo[1,2-b:5,4-b']dipyran-4,6-diones, were synthesized. Georg Thieme Verlag Stuttgart.

Synthesis of unsymmetrical methylene derivatives of benzopyran-4-ones from mannich bases

The formation of methylene-bis derivatives of benzopyran-4-ones from their Mannich bases was studied. On these grounds, unsymmetrical methylene derivatives have been synthesized by reacting Mannich bases of benzopyran-4-ones with structurally related comp