79135-69-6

Basic information

• Product Name: 2T2
• Synonyms: TOLANE 2-2;BIS(4-ETHYLPHENYL)ACETYLENE;BIS(4-ETHYLPHENYL)ETHYNE;4,4'-DIETHYLTOLANE;2T2;Di-(4-Ethylphenyl)ethyne
• CAS NO: 79135-69-6
• Molecular Formula: C₁₈H₁₈
• Molecular Weight: 234.34
• Mol File: 79135-69-6.mol
• Article Data: 11

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2T2(CAS DataBase Reference)
• NIST Chemistry Reference: 2T2(79135-69-6)
• EPA Substance Registry System: 2T2(79135-69-6)

Safety Data

• Hazardous Substances Data: 79135-69-6(Hazardous Substances Data)

Upstream product

• 72-56-0 perthane 
• 101783-95-3 1,1-bis-(4-ethyl-phenyl)-2,2-dibromo-ethane 
• 25309-64-2 4-ethyl-1-iodobenzene 
• 74-86-2 acetylene 
• 471-25-0 Propiolic acid 
• 75-20-7 calcium carbide 
• 52436-73-4 4-ethylbenzenediazonium tetrafluoroborate 
• 40307-11-7 1-ethyl-4-ethynylbenzene 
• 16331-45-6 p-ethylbenzoyl chloride 
• 25347-49-3 1,2-bis(p-ethylphenyl)ethylene 
• 79135-70-9 1,2-Dibromo-1,2-bis(p-ethylphenyl)ethane 
• 14720-90-2 1,1-bis-(4-ethyl-phenyl)-2-chloro-ethene 

Downstream Products

• 1584633-28-2 1-acetyl-5,6-bis(4-ethylphenyl)pyridin-2(1H)-one 
• 1259437-16-5 1,2-bis(4-ethylphenyl)-2-fluoroethanone 
• 1259437-15-4 1,2-bis(4-ethylphenyl)-2-fluoro-1,1-dimethoxyethane 
• 81734-57-8 4,4'-diethyl-cis-stilbene 
• 25347-49-3 1,2-bis(p-ethylphenyl)ethylene 

Relevant articles and documents

Synthesis of Diarylethynes from Aryldiazonium Salts by Using Calcium Carbide as an Alkyne Source in a Deep Eutectic Solvent

An efficient method for the synthesis of diarylethynes from aryldiazonium salts by using calcium carbide as an alkyne source at room temperature in a deep eutectic solvent is described. The salient features of this protocol are an inexpensive and easy-to-handle alkyne source, a nonvolatile and recyclable solvent, mild conditions, and a simple workup procedure.

A novel approach for rhodium(iii)-catalyzed C-H functionalization of 2,2′-bipyridine derivatives with alkynes: A significant substituent effect

We described a novel approach for the C-H functionalization of 2,2′-bipyridine derivatives with alkynes. DFT calculations and experimental data showed a significant substituent effect at the 6-position of 2,2′-bipyridine, which weakened the adjacent N-Rh bond and provided the possibility of subsequent rollover cyclometalation, C-H activation, and functionalization.

Electrochemistry-Enabled Ir-Catalyzed Vinylic C-H Functionalization

Synergistic use of electrochemistry and organometallic catalysis has emerged as a powerful tool for site-selective C-H functionalization, yet this type of transformation has thus far mainly been limited to arene C-H functionalization. Herein, we report the development of electrochemical vinylic C-H functionalization of acrylic acids with alkynes. In this reaction an iridium catalyst enables C-H/O-H functionalization for alkyne annulation, affording α-pyrones with good to excellent yields in an undivided cell. Preliminary mechanistic studies show that anodic oxidation is crucial for releasing the product and regeneration of an Ir(III) intermediate from a diene-Ir(I) complex, which is a coordinatively saturated, 18-electron complex. Importantly, common chemical oxidants such as Ag(I) or Cu(II) did not give significant amounts of the desired product in the absence of electrical current under otherwise identical conditions.