Rh(dppb)(η⁶-catBcat) | 215254-61-8

• 英文名称: Rh(dppb)(η⁶-catBcat)
• CAS: 215254-61-8
• 化学式: C₄₀H₃₆BO₄P₂Rh
• 分子量: 756.387
• InChiKey: SBPNEKKEYAEZGG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  、 O-亚苯基硼酸盐 以 not given 为溶剂， 以99%的产率得到Rh(dppb)(η⁶-catBcat)
  参考文献：
  名称：

  Rhodium catalysed diboration of unstrained internal alkenes and a new and general route to zwitterionic [L2Rh(η6-catBcat)] (cat = 1,2-O2C6H4) complexes†

  摘要：

  [L2Rh(acac)]（L = 烯烃或膦）与B2cat3反应生成净化的两性离子配合物[L2Rh(η6-catBcat)]和[(acac)Bcat]；其中，[(dppm)Rh(η6-catBcat)]的X射线结构已被报道，是一种优异的催化剂，用于乙烯基芳烃和不饱和内烯烃（顺式和反式二苯乙烯以及反式β-甲基苯乙烯）的二硼化反应。

  DOI：

  10.1039/a804710c
• 作为试剂：
  描述：

  (E)-2-(2'-phenylethenyl)-1,3,2-benzodioxaborole 、 在 Rh(dppb)(η⁶-catBcat) 作用下， 以 四氢呋喃 为溶剂， 反应 12.0h， 生成 2,2'-(2-phenyl-ethene-1,1-diyl)-bis-benzo[1,3,2]dioxaborole 、 、 2,2'-(1-phenylethane-1,2-diyl)dibenzo[1,3,2]dioxaborole 、 2-[1,1-Bis(1,3,2-benzodioxaborol-2-yl)-2-phenylethyl]-1,3,2-benzodioxaborole
  参考文献：
  名称：

  Rhodium(I) catalysed diboration of (E)-styrylboronate esters: molecular structures of (E)-p-MeO–C6H4–CHCH–B(1,2-O2C6H4) and p-MeO–C6H4–CH2C{B(1,2-O2C6H4)}3

  摘要：

  Diboration of the styrylboronate esters (E)-p-R-C6H4-CH=CH-Bcat (1) (R = H, (1a) MeO (1b); cat = 1,2-O2C6H4), with B(2)cat(2) in the presence of a variety of rhodium phosphine catalysts gives predominantly either p-R-C6H4-CH2C(Bcat)(3)), (2), which contains three boronate ester groups on one carbon atom, or its isomer p-R-C6H4-CH(Bcat)CH(Bcat)(2) (3). The formation of 2 apparently involves regiospecific insertion of the vinylboronates into a Rh-B bond followed by P-hydride elimination, another regiospecific insertion of the 2,2-vinyl bis(boronate) into the remaining Rh-B bond followed by C-H reductive elimination leading to 2,2-diboration and a 2.1-hydrogen shift. Wilkinson's catalyst (7) gives the highest yields of 2 with 75 and 71% yields from la and 1b, respectively, while [Rh(COE)(2)(mu-Cl)](2) (10) with two equivalents of P(o-tol)(3) gave 3 in highest yield with 50 and 49% from 1a and 1b, respectively. The crystal structure of (E)-p-MeO-C6H4-CH=CH-Bcat shows the molecule to be essentially planar. with the phenyl ring twisted slightly out of the plane. The tris(boronate) p-MeO-C6H4-CH2C(Bcat)(3) crystallises with two independent molecules in the unit cell, which differ in the rotational orientation of the phenyl ring in relation to the catecholate groups: the latter are arranged in a propeller-like fashion. (C) 2002 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s0022-328x(02)01310-4