Bis(2-bromoethyl) selenium dibromide as the selenium-introducing reagent: One-pot preparation of 2,5-bis(alkoxymethyl)tetrahydroselenophenes by the cyclization of 1,5-hexadiene

Introduction of Alkyl- or Phenylseleno Group by the Ring Opening of Cyclic Ethers Using Dialkyl- or Alkylphenylselenium Dibromide and Sodium Borohydride

“…'~) Therefore, the introduction of the phenylseleno group was carried out using 2-bromoethyl Downloaded by [University of Glasgow] at 19:50 02 January 2015 phenyl selenium dibromide ( l g ) . This reaction gave diphenyl diselenide ( 4 ) as the main product in 75 % yield. However, 4-hydroxybutyl phenyl selenide ( Z e ) was obtained in only 8 % yield.…”