5468-69-9

Basic information

• Product Name: 1,4-diphenyl-2-(piperidin-1-yl)but-2-ene-1,4-dione
• CAS NO: 5468-69-9
• Molecular Formula: C₂₁H₂₁NO₂
• Molecular Weight: 319.3969
• Mol File: 5468-69-9.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 462°C at 760 mmHg
• Flash Point: 193.9°C
• Density: 1.153g/cm³
• Vapor Pressure: 1.02E-08mmHg at 25°C
• Refractive Index: 1.601
• CAS DataBase Reference: 1,4-diphenyl-2-(piperidin-1-yl)but-2-ene-1,4-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 1,4-diphenyl-2-(piperidin-1-yl)but-2-ene-1,4-dione(5468-69-9)
• EPA Substance Registry System: 1,4-diphenyl-2-(piperidin-1-yl)but-2-ene-1,4-dione(5468-69-9)

Safety Data

• Hazardous Substances Data: 5468-69-9(Hazardous Substances Data)

Usage

Physical state

Yellowish crystalline powder

Uses

a. Developer in color photography
b. Antioxidant in rubber and plastic products
c. Synthesis of pharmaceuticals and organic compounds

Function

Inhibits autoxidation of organic materials by reacting with free radicals

Properties

a. Effective stabilizer
b. Antioxidant

Toxicity

Toxic to aquatic organisms

Hazards

Can cause skin and eye irritation in humans

Safety precautions

Handle with care and dispose of properly

Upstream product

• 110-89-4 piperidine 
• 22867-05-6 2,3-dibromo-1,4-diphenyl-butane-1,4-dione 
• 1087-09-8 1,4-diphenyl-but-2-yne-1,4-dione 
• 1074-12-0 phenylglyoxal hydrate 
• 536-74-3 phenylacetylene 
• 98-86-2 acetophenone 
• 63113-55-3 2-(methylthio)-1,4-diphenylbut-2-ene-1,4-dione 
• 3282-32-4 2-diazo-acetophenone 

Relevant articles and documents

A new method for the synthesis of functionalized 5-hydroxy-1,5-dihydro-2H- pyrrol-2-one: Reaction of an enamine, derived from addition of a secondary amine to dibenzoylacetylene, with an arylsulfonyl isocyanate

An effective route to novel 5-hydroxy-1,5-dihydro-2H-pyrrol-2-one is described which involves the reaction of an enamine, derived from addition of a secondary amine to dibenzoyl-acetylene, with an arylsulfonyl isocyanate. Georg Thieme Verlag Stuttgart.

A 2-amino-butene 1,4-dione derivative synthesis method (by machine translation)

The invention belongs to the field of organic chemical and fine chemical industry, particularly relates to a preparation of 2-amino-butane -1,4-dione derivatives synthesis process. The benzoyl formaldehyde derivatives, and mixed terminal alkyne, joins the gold catalyst, reaction under heating condition, to obtain 2-amino-butane -1,4-dione derivatives, the yield is 62-85%. The reaction of the raw materials with a simple, one-pot synthesis is the synthesis of 2-amino-butane -1,4-dione derivatives, raw materials are all involved in the generation of the product, mild reaction conditions, has very high atom economy, for the synthesis of 2-amino-butane -1,4-dione derivatives provides a high-efficiency, green new synthesis method. (by machine translation)

Bulk gold-catalyzed reactions of diazoalkanes with amines and O2 to give enamines

Bulk gold powder, consisting of approximately 5-50 μm particles, catalyzes reactions of diazoalkanes E(H)C=N2, where E is CO 2Et or PhC(O), with amines R1R2NH and O 2 to give enamine products (R1R2N)(E)C=CH(E) in 58-94% yield. The reactions are proposed to occur by initial formation of surface-bound (E)(H)C: carbene groups that are attacked by nucleophilic amines. The enamine products are very different than those obtained in reactions catalyzed by homogeneous transition metal complexes. These reactions of diazoalkanes, amines, and O2 represent a new type of bulk gold-catalyzed reaction.