Knoevenagel condensation of [NC–CH2C(O)–NH–CH(CO2Et)–S]2 with ferrocenecarbaldehyde and the activation of the σ(C–S) bond of [(η5-C5H5)Fe{(η5-C5H4)–CHC(CN)–C(O)–NH–CH(CO2Et)–CH2–S–}]2 induced by palladium(II)
作者:Sandra Dı́az、Asensio González、Concepción López
DOI:10.1016/j.jorganchem.2004.04.008
日期:2004.7
with R=4-MeO–C6H4, 4-NO2–C6H4, 4-Cl–C6H4, C6H5, 2,4,6-Me3–C6H2 or (η5-C5H5)Fe(η5-C5H4)} and [NC–CH2C(O)–NH–CH(CO2Et)–S]2 under different experimental conditions are reported. These studies have allowed the isolation and characterisation of three optically pure polyamides of general formula [R–CHC(CN)–C(O)–NH–CH(CO2Et)–CH2–S–]2 with R=4-MeO–C6H4 (3a), 4-NO2–C6H4 (3b) or (η5-C5H5)Fe(η5-C5H4) (3f). The reactions
从醛之间的Knoevenagel缩合获得的结果R-CHO 其中R = 4-的MeO-C 6 H ^ 4,4-NO 2 -C 6 H ^ 4,4-CL-C 6 H ^ 4,C 6 H ^ 5, 2,4,6--ME 3 -C 6 ħ 2或(η 5 -C 5 H ^ 5)的Fe(η 5 -C 5 H ^ 4)}和[NC-CH 2 C(O)-NH-CH(CO 2 Et)–S] 2在不同实验条件下的报道。这些研究已经可以分离和表征三种光学纯的通式为[R–CHC(CN)–C(O)–NH–CH(CO 2 Et)–CH 2 –S–] 2的聚酰胺,其中R = 4-的MeO-C 6 H ^ 4(图3a),4-NO 2 -C 6 H ^ 4(图3b)或(η 5 -C 5 H ^ 5)的Fe(η 5 -C 5 H ^ 4)(3F)。的反应3F用Na 2 [的PdCl 4 ]或Pd(ACO)2也被研究。加入Pd