117747-22-5Relevant academic research and scientific papers
NOVEL REACTIONS OF PHOSPHONIUM YLIDES WITH PERHALOALKANES: FIRST EXAMPLES OF HALOPHILIC ATTACKS BY PHOSPHONIUM YLIDES AND A FACILE ROUTE TO α-HALOALKYLPHOSPHONIUM SALTS
Li, Xing-Ya,Hu, Jin-Shan
, p. 6317 - 6320 (2007/10/02)
Phosphonium ylides Ph3=CHR (R = H, CH3, C2H5, n-C3H7, n-C5H11) react readily with perhalofluoroalkanes to afford regiospecifically α-haloalkylphosphonium salts Ph3P+-CHXR Y- (X = I, Br, Cl) in good yields.These reactions reveal a new type of reactivity phosphonium ylides, i.e., the halophilic attack on C-X bonds, and may be useful for the regiospecific synthesis of substituted haloolefins via Wittig reaction.
Preparation of Several 1,5,5,11,11-Pentamethyltricyclo2,6>undecane Derivatives
Inouye, Yoshinobu,Fukaya, Chikara,Kakisawa, Hiroshi
, p. 1117 - 1125 (2007/10/02)
1,6-Diketone, available in eight steps from homocamphorquinone, was converted into 1,5,5,11,11-pentamethyltricyclo2,6>undecan-7-one by treatment with potassium t-butoxide and then lithium dimethylcuprate, while α,α-dimethyl-γ-valerolactone, prepared in five steps from homocamphor, was converted into 1,5,5,11,11-pentamethyltricyclo2,6>undec-2-en-4-one by treatment with diphosphorus pentoxide-methanesulfonic acid.
