钛和锆半夹心络合物中配体的环戊二烯基-,茚基-和芴基双(五氟苯基)硼烷的合成。C的晶体结构13 ħ 9 B(C 6 ˚F 5)2 ·吨-BuNH 2,C 13 H ^ 8森达3 B(C 6 ˚F 5)2,和{η 5 -C 5 H ^ 4 B(C 6 F 5)2 } TiCl 3
摘要:
易于从BF 3 ·OEt 2和2当量的C 6 F 5 MgBr中获得的双(五氟苯基)氟化硼(C 6 F 5)2 BF·OEt 2(1)与芴基锂反应生成(Flu)B(C 6 F 5)2(4),而与茚基锂的反应导致区域异构体1-和2-IndB(C 6 F 5)2 5和6,通过分步结晶分离。4和5 与叔丁胺形成结晶加合物。类似地制备三甲基甲硅烷基衍生物Flu(SiMe 3)B(C 6 F 5)2(9)和Ind(SiMe 3)B(C 6 F 5)2(10)。加热(C 6 F 5)2 BF·OEt 2导致醚裂解并形成(C 6 F 5)2 BOEt。Zr(NMe 2)4处理5和6在室温下得到茚并锆酰胺基半三明治复合物;然而,该反应伴随有一个硼-C 6 F 5取代基被NMe 2意外交换,从而形成1-和2- {C 9 H 6 B(C 6 F 5)(NMe 2)} Zr(NMe 2)3。与SiClMe 3反应得到三氯化物1-和2-
The preparation of pentafluorophenyldihaloboranes from pentafluorophenylmercurials C6F5HgR and BX3: the dramatic dependence of the reaction direction on the ligand R
作者:Vadim V. Bardin、Nicolay Yu. Adonin
DOI:10.1007/s00706-019-02476-6
日期:2019.8
AbstractIn search of convenient preparations of C6F5BX2 (X = Cl, Br), reactions of C6F5HgR (R = C6F5, C6H5, C2H5, Br and Cl) with BX3 were studied. Under the action of BCl3 the order of the C–Hg bond cleavage is C6F5Hg–C6H5 > C6F5–HgC2H5 > C6F5–HgC6F5 >> C6F5–HgCl. With more reactive BBr3 the sequence is C6F5Hg–C6H5 > C6F5–HgC2H5 ~ C6F5Hg–C2H5 > C6F5–HgC6F5 ≥ C6F5–HgBr. During the study we found the
摘要为了寻找方便的C 6 F 5 BX 2(X = Cl,Br)制备方法,C 6 F 5 HgR(R = C 6 F 5,C 6 H 5,C 2 H 5,Br和Cl)与研究了BX 3。在BCl 3的作用下,C–Hg键断裂的顺序为C 6 F 5 Hg–C 6 H 5 > C 6 F 5 –HgC 2 H 5 > C 6 F 5 –HgC6 F 5 >> C 6 F 5 –HgCl。随着越来越多的反应性的BBr 3的序列为C 6 ˚F 5汞柱-C 6 H ^ 5 > C ^ 6 ˚F 5 -HgC 2 ħ 5 〜C ^ 6 ˚F 5汞柱-C 2 H ^ 5 > C ^ 6 ˚F 5 -HgC 6 ˚F 5 ≥ C 6 F 5 –HgBr。在研究过程中,我们发现了制备C 2 H的简单方法,即烷基二溴硼烷5的BBr 2选自C 2 ħ 5 HgBr和的BBr 3。除了较早报道的由二(环丙基)汞和BX
Consecutive intermolecular 1,1-carboboration reactions of Me<sub>3</sub>Si-substituted alkynes with the halogeno-B(C<sub>6</sub>F<sub>5</sub>)<sub>2</sub> reagents
作者:Karel Škoch、Christophe Pauly、Constantin G. Daniliuc、Klaus Bergander、Gerald Kehr、Gerhard Erker
DOI:10.1039/c9dt00413k
日期:——
1-(Trimethylsilyl)propyne 2a reacts with halogenoboranes XB(C6F5)2 (X: Cl, Br) in a 2 : 1 molar ratio under mild conditions by consecutive 1,1-carboboration reactions to give the highly substituted boryldienes 4.
The XB(C
<sub>6</sub>
F
<sub>5</sub>
)
<sub>2</sub>
Halogenoborane Route to Phosphole Derivatives
作者:Jennifer Möricke、Atsushi Ueno、Birgit Wibbeling、Constantin G. Daniliuc、Gerald Kehr、Gerhard Erker
DOI:10.1002/ejic.201900505
日期:2019.6.30
with either of the halogeno‐B(C6F5)2 reagents 10a,b (hal: Cl, Br) proceeds through addition and rearrangement to give the unsaturated C2‐bridged Hal–P/B Lewis pairs 12a,b. Their reactions with two molar equiv. of a small series of alkynyllithium reagents R–C≡CLi led to the formation of the phosphole derivatives 17 via intramolecular 1,1‐carboboration reaction.
二聚(丙炔基)膦(9)与卤代B(C 6 F 5)2试剂10a,b(hal:Cl,Br)的反应通过加成和重排进行,得到不饱和的C 2桥连的Hal -P / B刘易斯对12a,b。他们的反应有两个摩尔当量。一小撮炔基锂试剂R–C≡CLi通过分子内1,1–碳链化反应导致形成了磷脂衍生物17。
Phosphirenium borate betaines from alkynylphosphanes and the halogeno-B(C<sub>6</sub>F<sub>5</sub>)<sub>2</sub> reagents
作者:Atsushi Ueno、Jennifer Möricke、Constantin G. Daniliuc、Gerald Kehr、Gerhard Erker
DOI:10.1039/c8cc07189f
日期:——
of phosphanyl substituted alkynes R12P–CC–R2 [R12P: Mes2P or tBu2P; R2: SiMe3, Ph, tBu] reacts with the X–B(C6F5)2 reagents [X: Cl, Br] to give thermally rather stable neutral zwitterionic phosphirenium borate products. Five examples of this class of compounds were characterized by X-ray diffraction.
一系列膦酰基取代的炔烃R 1 2 P– CC C–R 2 [R 1 2 P:Mes 2 P或t Bu 2 P;R 2:SiMe 3,Ph,t Bu]与X–B(C 6 F 5)2试剂[X:Cl,Br]反应,得到热稳定的中性两性离子硼酸磷鎓产物。此类化合物的五个实例通过X射线衍射表征。
Arylallenes and the halogeno-B(C<sub>6</sub>F<sub>5</sub>)<sub>2</sub> reagents: facile formation of 2-borylindenes
作者:Xin Tao、Constantin G. Daniliuc、Kateryna Soloviova、Cristian A. Strassert、Gerald Kehr、Gerhard Erker
DOI:10.1039/c9cc04199k
日期:——
with ClB(C6F5)2 to give the respective 2-borylindene. Several substituted allenylarenes form the respective 2-B(C6F5)2 boryl-substituted indenes upon treatment with ClB(C6F5)2 or BrB(C6F5)2 as well. Bis- and tris-allenylarenes form the corresponding products featuring multiple five-membered ring annulations, including a symmetrical tris-borylated dihydro-1H-trindene derivative. The B(C6F5)2 borylindenes
苯丙二烯与ClB(C 6 F 5)2快速反应,生成相应的2-硼烷基茚。当用ClB(C 6 F 5)2或BrB(C 6 F 5)2处理时,几个取代的烯基芳烃形成各自的2-B(C 6 F 5)2硼取代的茚基。双-和三-烯基芳烃形成具有多个五元环环状的相应产物,包括对称的三-硼化二氢-1 H-丁烯衍生物。B(C 6 F 5)2 勃林登烯显示出荧光性质。