A range of optically active pyrrole monomers have been synthesized in which a
chiral sub- stituent is covalently bonded either to the pyrrole N or C3 ring
position, namely
(–)-(1R)-4-methyl-N-(1-phenylethyl)pyrrole-3-carboxamide,
(+)-(1S)-4-methyl-N-(1-phenylethyl)pyrrole-3-carboxamide,
(–)-(1R)-4-methyl-N-(1-naphthylethyl)pyrrole-3-carboxamide,
(+)-(1S)-4-methyl-N-(1-naphthylethyl)pyrrole-3-carboxamide,
(+)-(2S)-2-(1H-pyrrol-1-yl)propionic
acid,
(+)-(1S)-N-(1-phenyl-ethyl)pyrrole,
and
(–)-(1R)-N-(1-phenylethyl)pyrrole.
Their chiroptical properties have been established by circular dichroism
spectroscopy. Electropolymerization of the three
N-substituted pyrrole monomers provided films of chiral
conducting polymers, whose electrical and spectroscopic properties are
described. Although oxidation of the C3 substituted pyrrole monomers was also
facile, electrodeposition was poor and films of the associated polymers could
not be obtained.
我们合成了一系列具有光学活性的吡咯单体,其中的
手性副基质共价键合到吡咯 N 环或 C3 环位置上。
位上共价键合,即
(-)-(1R)-4-甲基-N-(1-苯基乙基)吡咯-3-甲酰胺、
(+)-(1S)-4-甲基-N-(1-苯基乙基)吡咯-3-甲酰胺、
(-)-(1R)-4-甲基-N-(1-萘乙基)吡咯-3-甲酰胺、
(+)-(1S)-4-甲基-N-(1-萘乙基)吡咯-3-甲酰胺、
(+)-(2S)-2-(1H-pyrrol-1-yl)propionic
酸、
(+)-(1S)-N-(1-苯基乙基)吡咯、
和
(-)-(1R)-N-(1-苯基乙基)吡咯。
它们的光电性质已通过圆二色性
光谱法确定了它们的光电性质。这三种
N 取代的吡咯单体的电聚合提供了手性导电聚合物薄膜。
导电聚合物薄膜。
介绍。虽然 C3 取代的吡咯单体也很容易氧化,但电沉积效果不佳。
虽然 C3 取代的吡咯单体也很容易氧化,但电沉积效果不佳,无法获得相关聚合物薄膜。
薄膜。