23767-28-4

Upstream product

• 4231-71-4 1H-1,2,3-benzotriazol-1-yl-4-nitrophenylmethanone 
• 4114-31-2 ethylhydrazine carboxylate 
• 541-41-3 chloroformic acid ethyl ester 
• 636-97-5 N-amino-(4-nitrophenyl)carboxamide 

Downstream Products

• 75609-01-7 ethyl p-nitrobenzoylazocarboxylate 
• 75609-12-0 6,7a-Dimethyl-3-(4-nitro-phenyl)-4a,5-diphenyl-4a,7a-dihydro-1H-cyclopenta[1,3,4]oxadiazin-7-one 
• 75609-02-8 cis-1-ethoxycarbonyl-3-p-nitrophenyl-6,7a-dimethyl-7-oxo-1,4a,7,7a-tetrahydrocyclopent<1,3,4>-oxadiazine 
• 38864-15-2 6,7a-Dimethyl-1-(4-nitro-benzoyl)-3-(4-nitro-phenyl)-4a,5-diphenyl-4a,7a-dihydro-1H-cyclopenta[1,3,4]oxadiazin-7-one 
• 80331-11-9 N'-(4-Nitro-benzoyl)-N-(2-oxo-cyclohexyl)-hydrazinecarboxylic acid ethyl ester 
• 80331-12-0 N-(5-tert-Butyl-2-oxo-cyclohexyl)-N'-(4-nitro-benzoyl)-hydrazinecarboxylic acid ethyl ester 
• 80331-06-2 C₂₂H₂₉N₅O₁₀ 
• 344747-33-7 C₂₆H₃₆N₆O₉ 
• 80330-96-7 N-{3-[N-Ethoxycarbonyl-N'-(4-nitro-benzoyl)-hydrazino]-2-oxo-cyclohexyl}-N'-(4-nitro-benzoyl)-hydrazinecarboxylic acid ethyl ester 
• 80330-98-9 N-{5-tert-Butyl-3-[N-ethoxycarbonyl-N'-(4-nitro-benzoyl)-hydrazino]-2-oxo-cyclohexyl}-N'-(4-nitro-benzoyl)-hydrazinecarboxylic acid ethyl ester 
• 23766-17-8 N-benzyl-5-(4-nitrophenyl)-1,3,4-oxadiazole-2-amine 
• 1750-82-9 N-phenyl-5-(4-nitrophenyl)-1,3,4-oxadiazol-2-amine 
• 3206-36-8 2-ethoxy-5-(4-nitrophenyl)-1,3,4-oxadiazole 
• 23767-30-8 2-chloro-5-(4-nitro-phenyl)-[1,3,4]oxadiazole 

Relevant academic research and scientific papers

Application of N-Acylbenzotriazoles in the Synthesis of 5-Substituted 2-Ethoxy-1,3,4-oxadiazoles as Building Blocks toward 3,5-Disubstituted 1,3,4-Oxadiazol-2(3H)-ones

5-Substituted-2-ethoxy-1,3,4-oxadiazoles were conveniently prepared through a one-pot sequential N-acylation/dehydrative cyclization between ethyl carbazate and N-acylbenzotriazoles in the presence of Ph3P-I2 as a dehydrating agent. Subsequent treatment with a stoichiometric amount of alkyl halides (X = Cl, Br, I) enables a rapid access to a variety of 3,5-disubstituted 1,3,4-oxadiazol-2(3H)-ones in good to excellent yields.

1,3,4-OXADIAZINE DERIVATIVES FROM CYCLOHEXANONE ENAMINES AND ASYMMETRIC DIIMIDES; POSSIBILITY OF RING-CHAIN TAUTOMERISM IN SUCH HETEROCYCLIC SYSTEM

1,3,4-oxadiazine derivatives, in equilibrium with their corresponding trisubstituted enamine isomers, are obtained in a regiospecific way from cyclohexanone enamines and ethoxycarbonyl aroyl diimides.Such an equilibrium is not present in analogous oxadiazine systems, derived from aryl aroyl diimides.