140139-59-9

Upstream product

• 94-02-0 ethyl 3-oxo-3-phenylpropionate 
• 140139-37-3 2-amino-1-azaazulene-3-carboaldehyde 
• 140139-34-0 1-(3-Formyl-cyclohepta[b]pyrrol-2-yl)-pyridinium; chloride 
• 140139-38-4 1-Cyclohepta[b]pyrrol-2-yl-pyridinium; chloride 
• 3336-74-1 2-aminocycloheptapyrrole 

Relevant academic research and scientific papers

Synthesis and Some Reactions of 2-Amino-1-azaazulene-3-carbaldehyde

2-Chloro-1-azaazulene-3-carbaldehyde (1a) reacted with pyridine, followed by a reaction with piperidine to give 2-amino-1-azaazulene-3-carbaldehyde (1b) in excellent yield.Compound 1b was also obtained by a Vilsmeier-Haack reaction of 2-amino-1-azaazulene.Acetylation of 1b yielded a 2-acetylamino derivative, whereas methylation gave a 1-methylated compound.Reactions of 1b with hydrazines and alkylamines gave the corresponding hydrazones and Schiff bases, respectively, in excellent yields.The reactions of 1b with active methylene compounds gave 1,10-diazabenzazulen-2(1H)-one derivatives.The reaction of 1b with guanidine gave pyrimidine-fuzed 1-azaazulene.