94392-53-7

Upstream product

• 16015-46-6 1(2H)-phthalazinethione 
• 19078-72-9 bromo(phenyl)acetyl chloride 
• 82323-46-4 phenylglyoxylic acid chloride p-toluenesulfonylhydrazone 
• 95647-35-1 S-(1-phthalizinyl)-α-phenylthioglycolic acid 

Downstream Products

• 95647-38-4 C₂₀H₁₂N₂O₄S 
• 95647-37-3 C₂₂H₁₇N₃O₃S 
• 95647-35-1 S-(1-phthalizinyl)-α-phenylthioglycolic acid 
• 95647-46-4 3-Phenyl-2,3-dihydro-pyrrolo[2,1-a]phthalazine-1,2-dicarboxylic acid dimethyl ester 
• 95647-47-5 C₂₂H₁₈N₂O₅S 
• 95647-39-5 10-ethyl-8-phenyl-9H-pyrrolo[3',4':3,4]pyrrolo[2,1-a]phthalazine-9,11(10H)-dione 
• 95647-42-0 ethyl 3-phenylpyrrolo<2,1-a>phthalizine-1-carbpxylate 
• 95647-44-2 3-phenylpyrrolo<2,1-a>phthalizine-1-carboxylic acid 
• 82027-00-7 3-phenylpyrrolo<2,1-a>phthalazine 
• 95647-36-2 1,2-dicyano-3-phenyl-4H-pyrido<2,1-a>phthalizin-4-one 
• 95647-41-9 3-Phenyl-2,3-dihydro-pyrrolo[2,1-a]phthalazine-1-carboxylic acid ethyl ester 
• 95647-40-8 C₂₁H₁₈N₂O₃S 
• 95647-53-3 dimethyl 4-oxo-3-phenyl-4H-pyrido<2,1-a>phthalizine-1,2-dicarboxylate 

Relevant academic research and scientific papers

Annulation to the Phthalazine Ring System Utilizing Mesoionic Ring Systems

anhydro-3-Hydroxy-2-phenylthiazolophthalizinium hydroxide, prepared from 1(2H)-phthalazinethione and α-bromophenylacetyl chloride or by Ac2O/Et3N ring closure of S-(1-phthalazinyl)-α-phenylthioglycolic acid, and dimethyl acetylenedicarboxylate in r

Carbenoid Intermediates in the Synthesis of Mesoionic Anhydro-4-hydroxythiazolium Hydroxides

α-(Tosylhydrazono)phenylacetyl chloride and N-monosubstituted thioamides in dry, non-protic solvents and in the presence of Et3N give representatives of the title mesoionic ring system in good to excellent yields; carbene or carbenoid type intermediates a