pentacarbonyl(1-methoxy-3-methyl-2-butenylidene)chromium

• 分子结构分类: 有机化合物 - 有机盐 - 有机金属盐
• 英文名称: pentacarbonyl(1-methoxy-3-methyl-2-butenylidene)chromium
• 英文别名: [iso-butenyl(methoxy)methylene]pentacarbonylchromium (0)；Carbon monoxide;(1-methoxy-3-methylbut-2-enylidene)chromium
• 化学式: C₁₁H₁₀CrO₆
• 分子量: 290.193
• InChiKey: UENUFATXKSIAJX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.09
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  14.2
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  pentacarbonyl(1-methoxy-3-methyl-2-butenylidene)chromium 、 2-溴苯乙炔 在 air 作用下， 以 乙腈 为溶剂， 反应 24.0h， 生成
  参考文献：
  名称：

  Design, Synthesis, and Diversification of 5,5-Dimethyl Cyclohexen-1,4-dione Library

  摘要：

  DOI：

  10.1021/cc100030h
• 作为产物：
  描述：

  以80%的产率得到pentacarbonyl(1-methoxy-3-methyl-2-butenylidene)chromium
  参考文献：
  名称：

  过渡金属卡宾配合物的羟醛反应

  摘要：

  在presente les Premiers 示例des 反应des 阴离子«enolate» des complexes carbene des metaux de transition avec les composes carbonyle donnant des produits d'aldolisation。上 etudie ainsila condensation du complexe (CO) 5 Cr=C(OMe)CH 3 avec le phenyl-2 propanal

  DOI：

  10.1021/ja00288a040

文献信息

• The preparation of imidazolidinone and oxazolidinone chelated carbene complexes
  作者：Timothy S Powers、William D Wulff、John Quinn、Yan Shi、Weiqin Jiang、Richard Hsung、Mark Parisi、Annette Rahm、Xiao Wu Jiang、Glenn P.A Yap、Arnold L Rheingold

  DOI：10.1016/s0022-328x(00)00734-8

  日期：2001.1

  these complexes. The imidazolidinone complexes are best prepared by adding an imidazolidinone or lithiated imidazolidinone to a methoxy carbene complex or to an in-situ generated acetoxy carbene complex. α,β-Unsaturated imidazolidinone complexes are prepared by aldol condensations of alkyl imidazolidinone complexes or by alkylaltion of these complexes with bromomethyl methyl ether and then elimination

  （CO）4 M = CC（R 1）NCO（CHR 2 CHR 3 X）类型的几种内部螯合的咪唑啉酮和恶唑烷酮费希尔卡宾配合物的合成据报道，其中M =铬，钨；[R 1 =甲基，乙基，异丙基，苯基，反式-丙烯基，异丙烯基，异丁烯基，环己烯基和1-丙炔基; R 2＝ H，Ph，Bn，Me，Cy；R 3= H，我，Ph；X = O，NMe。四种不同的方法用于合成这些配合物。最好将咪唑烷酮或锂化的咪唑烷酮加入甲氧基卡宾配合物或原位生成的乙酰氧基卡宾配合物中来制备咪唑烷酮配合物。α，β-不饱和咪唑烷酮配合物是通过烷基咪唑烷酮配合物的羟醛缩合或通过将这些配合物与溴代甲基甲醚烷基化，然后除去甲醇而制备的。最佳的恶唑烷酮配合物是通过两步程序制备的，该过程包括向甲氧基或乙酰氧基配合物中添加β-氨基醇，然后用光气将所得的氨基卡宾配合物封闭到恶唑烷酮配合物中。
• Preparation of Fischer carbene complexes by alkylation of acylmetalates with alkyl iodides
  作者：Thomas R. Hoye、Kejian Chen、James R. Vyvyan

  DOI：10.1021/om00031a056

  日期：1993.7

  Neutral Fischer carbene complexes bearing alkoxy groups as the donor substituents on the carbene carbon atom have been synthesized by direct alkylation of the lithium acylmetalates (formed by classical addition of organolithium compounds to metal hexacarbonyl) by alkyl iodides. It was shown that the reaction proceeds under normal phase-transfer conditions (CH2-Cl2/H2O) or, preferably, in aqueous medium alone. However, in both cases the presence of a catalytic amount of a tetraalkylammonium salt (n-Bu4NBr) was required. Attractive features of this methodology are (i) the economy of using alkyl iodides in place of the usual alkylating agents (like Me3O+BF4-, magic methyl, or methyl triflate), (ii) the procedural ease of ''one-pot'' preparation of the carbene complexes, and (iii) the greater variety of alkyl moieties that can be incorporated as part of the alkoxy substituent using the more readily available alkyl iodides containing nontrivial alkyl groups. The procedure is preparatively useful for accessing chromium-containing carbenes, but yields of the analogous molybdenum- and tungsten-containing species are only less-than-or-equal-to 10%. Mechanistic considerations suggest that products are formed by competing pathways involving direct S(N)2 displacement vs electron-transfer-initiated S(RN)1 processes.
• Rhodium(I)-catalyzed [3+2+2]-cyclization of alkenyl Fischer carbene complexes with methyl buta-2,3-dienoate
  作者：José Barluenga、Rubén Vicente、Luis A. López、Miguel Tomás

  DOI：10.1016/j.tet.2010.04.130

  日期：2010.8

  A variety of alkenyl chromium Fischer carbene complexes react with methyl buta-2,3-dienoate in the presence of a rhodium catalyst to afford substituted cycloheptene derivatives 7, along with minor amounts of cyclopentene derivatives 6. Through this [3+2+2]-cyclization two allene units and one alkenyl carbene ligand are assembled in a selective manner. (C) 2010 Elsevier Ltd. All rights reserved.
• Cyclohexadienone annulation via .alpha.,.beta.-unsaturated Fischer carbene complexes
  作者：Peng Cho Tang、William D. Wulff

  DOI：10.1021/ja00316a061

  日期：1984.2
• TANG, PENG-CHO;WULFF, W. D., J. AMER. CHEM. SOC., 1984, 106, N 4, 1132-1133
  作者：TANG, PENG-CHO、WULFF, W. D.

  DOI：——

  日期：——