Beiträge zur chemie des bors XLI. Darstellung von organylborhalogeniden
作者:Heinrich Nöth、Heinrich Vahrenkamp
DOI:10.1016/0022-328x(68)80063-4
日期:——
The preparation of organohaloboranes R3−nBXn (R = CH3, C2H5, C6H5; X = F, Cl, Br. I) by two convenient procedures is described. These are based on the action of boron halides on tetraorganostannanes and dialkylamino-organoboranes respectively.
描述了通过两种方便的方法制备有机卤代呋喃酮R 3- n BX n(R = CH 3,C 2 H 5,C 6 H 5; X = F,Cl,Br。I)。这些是基于卤化硼分别对四有机锡烷和二烷基氨基-有机硼烷的作用。
Synthesis of Dialkyl Ethers from Organotrifluoroborates and Acetals
作者:T. Andrew Mitchell、Jeffrey W. Bode
DOI:10.1021/ja906514s
日期:2009.12.23
The formation of ethers by C-O bond formation under harsh basic or acidic conditions is an entrenched synthetic disconnection in organic chemistry. We report a strategic alternative that involves the BF(3).OEt(2)-promoted coupling of stable, easily prepared acetals with widely available potassium aryl-, alkenyl-, and alkynyltrifluoroborates. This fast, operationally simple process offers straightforward
在苛刻的碱性或酸性条件下通过 CO 键形成形成醚是有机化学中根深蒂固的合成断开。我们报告了一种战略替代方案,涉及 BF(3).OEt(2) 促进的稳定、易于制备的缩醛与广泛可用的芳基-、烯基-和炔基三氟硼酸钾的偶联。这种快速、操作简单的过程提供了直接获得二烷基醚的途径,其中许多使用经典方法难以制备。使用 MOM 保护的醇和缩醛保护的醛可以形成醚,而无需求助于保护基操作或强碱。
A Convenient and General Approach to Alkyl-, Alk-1-enyl-, and Aryldifluoroboranes
alk-1-enyl-, and aryldifluoroboranes RBF2 was elaborated. Suspensions of the easily available and storable K [RBF3] salts undergo fluoride abstraction when treated with borontrifluoride to form solutions of the corresponding difluoroboranes RBF2.
Copper-catalyzed electrophilic amination using N-methoxyamines
作者:Yutaro Fukami、Takamasa Wada、Tatsuhiko Meguro、Noritaka Chida、Takaaki Sato
DOI:10.1039/c5ob02167g
日期:——
Copper-catalyzed electrophilic amination using functionalizedN-methoxyamines, prepared by nucleophilic addition toN-methoxyamides, is reported.
使用功能化的N-甲氧胺进行铜催化的电亲合胺化反应,该N-甲氧胺是通过亲核加成到N-甲氧酰胺制备的。
From hypervalent xenon difluoride and aryliodine(III) difluorides to onium salts: Scope and limitation of acidic fluoroorganic reagents in the synthesis of fluoroorgano xenon(II) and iodine(III) onium salts
RfBF2 are in general suitable reagents to transform XeF2 and RIF2 into the corresponding onium tetrafluoroborate salts [RfXe][BF4] and [R(Rf)I][BF4], respectively. (4-C5F4N)BF2 and trans-CF3CFCFBF2 which represent boranes of high acidity form no Xe–C oniumsalts in reactions with XeF2 but give the desired iodonium salts with RIF2 (R = C6F5, o-, m-, p-C6FH4). The reaction of (4-C5F4N)BF2 with XeF2 ends with
通常,氟化有机二氟硼烷R f BF 2是将XeF 2和RIF 2分别转化为相应的四氟硼酸盐[R f Xe] [BF 4 ]和[R(R f)I] [BF 4 ]的试剂。(4-C 5 F 4 N)BF 2和反式-CF 3 CFCFBF 2代表高酸性硼烷,在与XeF 2反应时不形成Xe-C鎓盐,但与RIF 2形成所需的碘鎓盐(R = C 6 ˚F 5,o-,m-,p -C 6 FH 4)。(4-C 5 F 4 N)BF 2与XeF 2的反应以XeF 2-硼烷加合物终止。当C 6 F 5 XeF与Cd(4-C 5 F 4 N )反应时,获得第一个Xe-(4-C 5 F 4 N)化合物C 6 F 5 Xe(4-C 5 F 4 N)。)2。我们描述了(4-C 5 F 4 N)IF 2的合成和(4-C 5 F 4 N)IF 2和C 6 F 5 IF 2与(4-C 5 F 4 N)BF 2的反应。类似于[(4-C