959697-71-3Relevant academic research and scientific papers
Titanocene(III) mediated radical cyclizations of epoxides for the synthesis of medium-sized cyclic ethers
Mandal, Samir Kumar,Roy, Subhas Chandra
, p. 11341 - 11348 (2007)
Titanocene(III) chloride (Cp2TiCl) mediated 7-exo and 8-endo radical cyclizations of epoxides towards the synthesis of 7- and 8-membered cyclic ethers have been described. Titanocene(III) chloride was prepared in situ from commercially available titanocene dichloride (Cp2TiCl2) and activated zinc dust in THF.
A hierarchy of aryloxide deprotection by boron tribromide
Punna, Sreenivas,Meunier, Stephane,Finn
, p. 2777 - 2779 (2007/10/03)
Aryl propargyl ethers and esters are cleaved selectively in the presence of aryl methyl ethers and esters by boron tribromide in dichloromethane. Under the same conditions, allyl ethers undergo very rapid Claisen rearrangement, and benzyl ethers are also cleaved more rapidly than propargyl. A mechanism involving intramolecular delivery of bromide to the propargyl terminus is proposed.
