70079-12-8

Upstream product

• 959-88-6 1,4-bis(4-bromodiphenyl)buta-1,3-diyne 
• 123324-71-0 p-tert-butylphenylboronic acid 
• 766-96-1 4-bromo-1-ethynylbenzene 
• 934-96-3 4-iodo-1-iodoethynylbenzene 
• 5748-39-0 1-(4'-(tert-butyl)-[1,1'-biphenyl]-4-yl)ethan-1-one 
• 897086-76-9 4-tert-butyl-4'-ethynylbiphenyl 

Downstream Products

• 1415923-47-5 2,5-bis(4'-tert-butyl-4-biphenyl)thiophene 

Relevant academic research and scientific papers

One-Pot Dual C?C Coupling Reaction via Site Selective Cascade Formation by PdII-Cryptate of an Amino-Ether Heteroditopic Macrobicycle

Selectivity of aryl iodo over ethynyl iodo toward the Suzuki cross coupling reaction is explored by utilizing a palladium complex of amino-ether heteroditopic macrobicycle. Subsequently, unreacted ethynyl iodide undergoes homocoupling reaction in the same catalytic atmosphere, thereby representing a cascade dual C?C coupling reaction. Furthermore, this approach is extended for novel one-pot synthesis of unsymmetrical 1,3-diynes.

Site-selective sequential coupling reactions controlled by "electrochemical Reaction Site Switching": A straightforward approach to 1,4-bis(diaryl)buta-1,3-diynes

Site-selective sequential coupling reactions directed toward bis(diaryl)butadiynes are described. The reaction site could be controlled completely by the on/off application of electricity. The electro-oxidative homo-coupling of terminal alkynes (electricity ON) and the subsequent Suzuki-Miyaura coupling (electricity OFF) afforded bis(diaryl)butadiynes in high yields. The obtained 1,4-bis(diaryl)butadiynes could be converted to a 2,5-bis(diaryl)thiophene derivative, which exhibited blue fluorescence. The Royal Society of Chemistry 2012.