117531-72-3

Upstream product

• 91-56-5 indole-2,3-dione 
• 117563-24-3 1-Acetyl-3-[1-(3-chloro-phenyl)-meth-(E)-ylidene]-piperazine-2,5-dione 
• 612-54-4 2-chloro-3H-indol-3-one 
• 117563-24-3 1-Acetyl-3-[1-(3-chloro-phenyl)-meth-(E)-ylidene]-piperazine-2,5-dione 
• 587-04-2 m-Chlorobenzaldehyde 

Relevant academic research and scientific papers

2-Chloro-3H-indol-3-one and its Reactions with Nucleophiles

The title compound reacts with N- and S-nucleophiles to form 3-substituted indol-2-ones, but with C-nucleophiles to afford either these or the corresponding 2-substituted indol-3-ones.This dichotomy of behavior is documented and rationalized.

Conjugated Systems Derived from Piperazine-2,5-dione

The preparation of mono- and of symmetrical and unsymmetrical bis-ylidene derivatives of piperazine-2,5-dione is described.The uv-visible absorption of the products is correlated with acceptor/donor character of the substituents.