膦酸酯封端的G(0)化合物Si(CH(2))(3)SiMe(2)(C(6)H(4)CH(2)OC(O)(CH(2))(n) ()CH(2)PPh(2)(4)(9a和9b; n = 1,2)和碳硅烷树状大分子Si(CH(2))(3)Si((CH(2))(3)SiMe (2)(C(6)H(4)CH(2)OC(O)(CH(2))(n)()CH(2)PPh(2))(3)(4)(10a和10b ; n = 1,2)制备为钯的烯烃共聚二聚体的半不稳定的纳米级配体,苯乙烯的乙烯基化反应在连续操作的纳滤膜反应器中进行,在连续条件下,反应的选择性大大提高。比较了单体模型配合物和树枝状催化剂在间歇反应中的活性和选择性,由树枝状配体和(烯丙基)钯(II)前体原位制备了Pd催化剂配合物。
膦酸酯封端的G(0)化合物Si(CH(2))(3)SiMe(2)(C(6)H(4)CH(2)OC(O)(CH(2))(n) ()CH(2)PPh(2)(4)(9a和9b; n = 1,2)和碳硅烷树状大分子Si(CH(2))(3)Si((CH(2))(3)SiMe (2)(C(6)H(4)CH(2)OC(O)(CH(2))(n)()CH(2)PPh(2))(3)(4)(10a和10b ; n = 1,2)制备为钯的烯烃共聚二聚体的半不稳定的纳米级配体,苯乙烯的乙烯基化反应在连续操作的纳滤膜反应器中进行,在连续条件下,反应的选择性大大提高。比较了单体模型配合物和树枝状催化剂在间歇反应中的活性和选择性,由树枝状配体和(烯丙基)钯(II)前体原位制备了Pd催化剂配合物。
codimerization of styrene and ethene can be carried out continuously in a nanofiltrationmembranereactor with dendritic Pd complexes such as 1. The selectivity of the reaction is increased considerably undercontinuousconditions. The activity and selectivity of monomeric model complexes and the dendritic catalysts were compared in batch reactions.
The photoinduced radical-based hydrophosphinylation suffered from substrate scope limitation due to the highly electrophilic property of the P(O) radical. Herein, we report an efficient catalytic system for the intermolecular anti-Markovnikov hydrophosphinylation of olefins using disulfide as a photocatalyst and also a hydrogen atom shuttle. This metal-free, base-free, and redox-neutral condition allowed
由于P(O)自由基的高亲电子特性,光诱导自由基氢膦酰化受到底物范围的限制。在此,我们报道了一种使用二硫化物作为光催化剂和氢原子穿梭的烯烃分子间反马可夫尼科夫氢膦酰化的有效催化系统。这种无金属、无碱和氧化还原中性的条件使得具有不同电子性质的烯烃能够有效地进行反马尔可夫尼科夫 P-H 加成。提出了一种涉及 ArS• 和 P(O)–H 之间 HAT 过程的合理机制。