203172-78-5

Basic information

• Product Name: 4,4-dimethyl-1-phenyl-2-pentyne
• Synonyms: 4,4-dimethyl-1-phenyl-2-pentyne
• CAS NO: 203172-78-5
• Molecular Weight: 172.27
• Mol File: 203172-78-5.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 4,4-dimethyl-1-phenyl-2-pentyne(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4-dimethyl-1-phenyl-2-pentyne(203172-78-5)
• EPA Substance Registry System: 4,4-dimethyl-1-phenyl-2-pentyne(203172-78-5)

Safety Data

• Hazardous Substances Data: 203172-78-5(Hazardous Substances Data)

Upstream product

• 917-92-0 3,3-Dimethylbut-1-yne 
• 100-39-0 benzyl bromide 
• 17474-12-3 4,4-dimethyl-1-phenyl-pent-2-yn-1-ol 
• 866562-21-2 4,4-dimethyl-1-phenylpent-2-ynyl acetate 
• 37892-71-0 tert-butyllithium 

Relevant articles and documents

Propargylsilanes as Reagents for Synergistic Gold(I)-Catalyzed Propargylation of Carbonyl Compounds: Isolation and Characterization of σ-Gold(I) Allenyl Intermediates

Reported herein is the isolation and characterization, for the first time, of a σ-gold allenyl complex as an intermediate in gold catalysis. This intermediate was captured during the study of a novel gold(I)-catalyzed propargylation of carbonyl compounds with propargylsilanes. Notably, the gold-catalyzed propargylation reaction, which proceeds with aldehydes and ketones, can be driven to the formation of either homopropargyl silyl ethers or the in situ synthesis of corresponding 2-silyl-4,5-dihydrofurans.

Indium tribromide-catalyzed deacetoxylation of propargylic acetate with triethylsilane

Indium(III) bromide catalyzed the deacetoxylation of propargylic acetates with Et3SiH to produce the corresponding internal alkynes containing a variety of functional groups in good yields.