Reactions of alkene complexes [Re(η5-C5H5)(NO)(PPh3)(H2CCHR)]BF41(R = H a, Me b, CH2CH2Me c, Ph d or CH2Ph e) and LiCuMe2 in tetrahydrofuran (thf) at –80 °C gave the primary, β-branched alkyl complexes [Re(η5-C5H5)(NO)(PPh3)(CH2CHMeR)]2(79–99%). No secondary alkyl complexes derived from additions to the unsubstituted CH2 termini were detected. Product diastereomer and enantiomer ratios matched those
烯烃配合物的反应[回复(η 5 -C 5 H ^ 5)(NO)(PPH 3)(H 2 C ^ CHR)] BF 4 1(R = H一个中,Me b,CH 2 CH 2我Ç中,Ph d或CH 2博士ë)和LiCuMe 2的
四氢呋喃(THF)中在-80℃下,得到伯,β-支链的烷基配合物[回复(η 5 -C 5 H ^ 5)(NO)(PPH 3)(CH 2 C
HMER )] 2(79–99%)。没有检测到衍生自未取代的CH 2末端的仲烷基配合物。产物非对映异构体和对映异构体的比例与反应物的匹配。因此,添加物是区域特异性的,非对映体特异性的和对映体特异性的。一种
化学相关性涉及[回复(η 5 -C 5 H ^ 5)(NO)(PPH 3)CH 2 CH(CD 3)Me}]和晶体结构测定[(SR,RS) -图2e ·0.5C 6 [H 14 ]表明抗on的C C面上发生了腐蚀。1a的反应或1B(在TH