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Preparation of pyranylidene complexes of ruthenium

机译:钌的亚吡咯烷配合物的制备

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摘要

The reaction of the chloro-complex RuCl(eta(5)-C5H5)(PPh3)[P(OMe)(3)] with alkylpropiolates HC equivalent to CCOOR1 in alcohol R2OH affords pyranylidene derivatives [Ru(eta(5)-C5H5){=C(COOR1)C(H)C(H)C(OR1)O}(PPh3){ P(OMe)(3)}]BPh4 (1, 3) and alkoxycarbene complexes [Ru(eta(5)-C5H5){=C(OR2)(CH(2)COOR1)}(PPh3){P(OMe)(3)}]BPh4 (2, 4). A reaction path for the formation of compounds 1-4, involving reactions on a vinylidene intermediate complex, is also discussed. The complexes were characterized spectroscopically (IR and H-1, C-13, P-31 NMR) and by X-ray crystal structure determination of [Ru(eta(C5H5)-C-5){=C(COOMe)C(H)C(H)C(OMe)O}(PPh3){P(OMe)(3)}] BPh4 (1).
机译:氯配合物RuCl(eta(5)-C5H5)(PPh3)[P(OMe)(3)]与相当于CCOOR1的烷基丙酸酯HC在醇R2OH中的反应得到吡喃亚烷基衍生物[Ru(eta(5)-C5H5) {= C(COOR1)C(H)C(H)C(OR1)O}(PPh3){P(OMe)(3)}] BPh4(1、3)和烷氧基卡宾配合物[Ru(eta(5)- C5H5){= C(OR2)(CH(2)COOR1)}(PPh3){P(OMe)(3)}] BPh4(2,4)。还讨论了形成化合物1-4的反应路径,该反应路径涉及在亚乙烯基中间配合物上的反应。对该络合物进行光谱表征(IR和H-1,C-13,P-31 NMR)并通过X射线晶体结构测定[Ru(eta(C5H5)-C-5){= C(COOMe)C( H)C(H)C(OMe)O}(PPh3){P(OMe)(3)}] BPh4(1)。

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