论文部分内容阅读
Exo-cyclic double-bond addition of 6,6-dialkylfulvene and 6,6-polymethylenefulvene withα-pyridylmethyllithium (α-picolinyllithium) results in substituted cyclopentadienyl lithium,which is hy-drolyzed or reacted with ferrous chloride to give α-picolinyl di