Helix-sense-selective polymerization of a phenylacetylene bearing an achiral and bulky galvinoxyl moiety
Helix-sense-selective polymerization of a phenylacetylene bearing an achiral and bulky galvinoxyl moiety
复制标题
DOI：
10.1246/cl.2005.854
复制
发表时间：
2005-06-05
影响因子：
1.6
通讯作者：
Aoki, T
中科院分区：
文献类型：
--
作者：
Umeda, Y;Kaneko, T;Aoki, T
用[Rh(nbd)Cl]（2) （nbd = 2,5-降冰片二烯）催化剂在手性苯乙胺中聚合了体积较大的非手性苯乙炔单体（4-乙基苯基）氢galvinoxyl）。聚合物的圆二色性（CD）光谱表明，尽管是非手性单体，但螺旋选择性聚合诱导了过量的单手螺旋聚乙炔主链。
An achiral and bulky phenylacetylene monomer, (4-ethynyl-phenyl)hydrogalvinoxyl), was polymerized using [Rh(nbd)Cl](2) (nbd = 2,5-norbornadiene) catalyst in chiral phenylethylamine. The circular dichroism (CD) spectra of the obtained polymers indicated that an excess of one-handed helical polyacetylene backbone was induced by helix-sense-selective polymerization despite the achiral monomer.