57710-75-5Relevant academic research and scientific papers
Manganese(III) or Cobalt(III)-Mediated Oxidative Radical Reactions of Terminal Dienes. One-Pot Synthesis of Bis(dihydrofuran)s
Nishino, Hiroshi,Yoshida, Tomoaki,Kurosawa, Kazu
, p. 1097 - 1107 (2007/10/02)
The reactions of terminal dienes such as 1,4-pentadienes and 1,5-hexadienes with tris(2,4-pentanedionato)manganese(III) () gave α,ω-bis(dihydrofuryl)alkanes (abbreviated bis(dihydrofuran)s, hereafter) in good yields.The reactions with tris(2,4-pentanedionato)cobalt(III) () instead of yielded the same bis(dihydrofuran)s quantitatively.The dienes also reacted with ethyl 3-oxobutanoate in the presence of manganese(III) acetate () or cobalt(III) acetate () to produce the corresponding bis(dihydrofuran)s.The reactions of 1,3-butadienes with the manganese(III) or cobalt(III) complexes afforded only mono(dihydrofuran)s and oxidative rearrangement products, but the corresponding bis(dihydrofuran)s were not formed.The reaction of 1,5-hexadienes with ethyl hydrogen malonate in the presence of did not give bis-annulated products, but mono(γ-lactone)s in moderate yields.The synthetic applications and limitations of the bis(dihydrofuran)s formation are discussed.
NOVEL REACTIONS OF 1,1,4,4-TETRAARYL-1,2,3-BUTATRIENES WITH ELEMENTAL SULFUR AND SELENIUM
Tokitoh, Norihiro,Hayakawa, Hiroshi,Goto, Midori,Ando, Wataru
, p. 1935 - 1938 (2007/10/02)
Sulfurization and selenation reactions of 1,1,4,4-tetraaryl-1,2,3-butatrienes were examined to give novel 1,2,3,4,5-pentathiepane and 1,2,5-triselenepane ring systems.Further degradation of these new heterocycles using DBU/DMF was also described.
