74306-02-8

Upstream product

• 6293-87-4 o-nitrophenylhydrazine hydrochloride 
• 123-62-6 propionic acid anhydride 
• 802294-64-0 propionic acid 
• 3034-19-3 (2-nitrophenyl)hydrazine 

Downstream Products

• 102616-97-7 1-Propylamino-1,3-dihydro-benzoimidazol-2-one 
• 40697-83-4 β-Propionyl-2-aminophenylhydrazin 
• 74305-92-3 propionyl chloride 2-nitrophenylhydrazone 
• 120163-92-0 Propionic acid N'-(4-methoxy-phenyl)-N'-(2-nitro-phenyl)-hydrazide 
• 120163-91-9 Propionic acid N'-(2-nitro-phenyl)-N'-p-tolyl-hydrazide 
• 120163-90-8 Propionic acid N'-(2-nitro-phenyl)-N'-phenyl-hydrazide 

Relevant academic research and scientific papers

Flash vacuum pyrolysis of stabilised phosphorus ylides. Part 11. Unexpected generation and rearrangement of acetyl benzotriazolyl carbene

Seventeen novel α-benzotriazolyl-β-oxo phosphorus ylides 2 have been prepared and characterised. Flash vacuum pyrolysis (FVP) of these generally leads to loss of both R13PO and N2 to give intractable products but, in one case, 21, extrusion of Bu3P is observed to give 3-acetyl-1,2,4-benzotriazine 6 and 2′-cyanoaceto-phenone 7, products apparently derived from rearrangement of the initially formed carbene 11, and involving in the latter case a novel 1,3-acetyl migration process.

Unexpected Generation and Rearrangement of Acetyl Benzotriazolyl Carbene

Flash vacuum pyrolysis of one example from a wide range of α-benzotriazolyl-β-oxo phosphorus ylides results in extrusion of Bun3P to give 3-acetyl-1,2,4-benzotriazine and o-cyanoacetophenone, products apparently derived from rearrangement of th