Boron halides as reagents in inorganic syntheses. Part II. A further general method for the preparation of anhydrous bromides and iodides: halogen exchange reactions

1971 ◽  
pp. 3595 ◽  
Author(s):  
P. M. Druce ◽  
M. F. Lappert
Keyword(s):  
Exchange Reactions ◽  
Halogen Exchange ◽  
Boron Halides ◽  
General Method

Third-phase catalytic activity of halogen exchange reactions in phase transfer catalytic system

1997 ◽  
Vol 52 (20) ◽  
pp. 3511-3520 ◽  
Author(s):  
Tadaatsu Ido ◽  
Takanobu Yamamoto ◽  
Gong Jin ◽  
Shigeo Goto
Keyword(s):  
Catalytic Activity ◽  
Catalytic System ◽  
Phase Transfer ◽  
Exchange Reactions ◽  
Third Phase ◽  
Halogen Exchange

scholarly journals Regioselective Synthesis of 5-Propyl-2-((trityloxy)methyl)thiophene-3-carbaldehyde

Molbank ◽  
10.3390/m1289 ◽  
2021 ◽  
Vol 2021 (4) ◽  
pp. M1289
Author(s):  
Sukanta Bar
Keyword(s):  
Exchange Reaction ◽  
Regioselective Synthesis ◽  
Exchange Reactions ◽  
Halogen Exchange

5-propyl-2-((trityloxy)methyl)thiophene-3-carbaldehyde was synthesized by using the concept of chemo- and regioselective Br/Li exchange reaction from 3-bromo-5-propyl-2-((trityloxy)methyl)thiophene. This is a five-step protocol starting from thiophene with an overall yield of 33%. These lithium/halogen exchange reactions were carried out at −78 °C to rt over the period of 1 to 18 h depending on the reactivity of electrophiles.

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