TY - JOUR
T1 - Preparation of sterically protected 3,4-bis[(2,4,6-tri-t-butylphenyl)phosphinidene]-1,2-bis[4-(4-vinylphenyl)butyl]c yclobutene and its polymers
AU - Yamada, Naoki
AU - Toyota, Kozo
AU - Yoshifuji, Masaaki
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Two new sterically protected 3,4-diphosphinidenecyclo-butenes, i.e., 1,2-bis[4-(4-methylphenyl)butyl]-3,4-bis[(2,4,6-tri-t-butylphenyl)phosphinidene] cyclobutene, and 3,4-bis[(2,4,6-tri-t-butylphenyl)phosphinidene]-1,2-bis[4-(4-vinylphenyl)butyl]c yclobutene, were prepared. Copolymerization of the latter with styrene was studied. Treatment of [6-(4-vinylphenyl)hex-1-ynyl](2,4,6-tri-t-butylphenyl)phosphine with butyllithium and 1,2-dibromoethane afforded a polymer of the latter cyclobutene.
AB - Two new sterically protected 3,4-diphosphinidenecyclo-butenes, i.e., 1,2-bis[4-(4-methylphenyl)butyl]-3,4-bis[(2,4,6-tri-t-butylphenyl)phosphinidene] cyclobutene, and 3,4-bis[(2,4,6-tri-t-butylphenyl)phosphinidene]-1,2-bis[4-(4-vinylphenyl)butyl]c yclobutene, were prepared. Copolymerization of the latter with styrene was studied. Treatment of [6-(4-vinylphenyl)hex-1-ynyl](2,4,6-tri-t-butylphenyl)phosphine with butyllithium and 1,2-dibromoethane afforded a polymer of the latter cyclobutene.
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U2 - 10.1246/cl.2001.248
DO - 10.1246/cl.2001.248
M3 - Article
AN - SCOPUS:0035609311
SP - 248
EP - 249
JO - Chemistry Letters
JF - Chemistry Letters
SN - 0366-7022
IS - 3
ER -