(2S,3R,4R)-1-(tert-butyldimethylsilyloxy)-2,4-dimethylhex-5-ene-3-ol | 106357-21-5

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: (2S,3R,4R)-1-(tert-butyldimethylsilyloxy)-2,4-dimethylhex-5-ene-3-ol
• 英文别名: (2S,3R,4R)-1-(tert-butyldimethylsilyloxy)-2,4-dimethylhex-5-en-3-ol；(2S,3R,4R)-1-[tert-butyl(dimethyl)silyl]oxy-2,4-dimethylhex-5-en-3-ol
• CAS: 106357-21-5
• 化学式: C₁₄H₃₀O₂Si
• 分子量: 258.476
• InChiKey: JKEWULNLXLQSQZ-FRRDWIJNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.83
• 重原子数：
  17
• 可旋转键数：
  7
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (2S,3R,4R)-1-(tert-butyldimethylsilyloxy)-2,4-dimethylhex-5-ene-3-ol 在 碳酸氢钠 、 臭氧 、 二甲基硫 作用下， 以 二氯甲烷 为溶剂， 反应 3.57h， 生成 (2S,3S,4S)-5-(tert-butyldimethylsilyloxy)-3-hydroxy-2,4-dimethylpentanal
  参考文献：
  名称：

  使用含硅化合物进行有机合成中的立体控制。针对合成依贝内酯A的研究。

  摘要：

  描述了几种合成依贝内酯A 2的方法，最终合成了2-表皮-依贝内酯A 161的苯磺酸盐。所有方法均基于三个片段A，B和C，它们最初是在通用术语中定义的，但最终用作醛72，烯丙基硅烷3和醛139。他们先加入B，再加入C，然后再加入B + C，再加入A。在通往片段A和C的主要途径中，相对立体化学是由高度立体选择性烯醇酸甲基化67-> 67、68-> 69和135-> 136，在每种情况下均抗相邻的甲硅烷基，并且通过烯丙基硅烷137-> 138的高度立体选择性氢硼化，也抗甲硅烷基。原定位于C-3和C-11上的羟基未被甲硅烷基向羟基的转化作用69-> 70和138->掩盖 139，保留配置。片段B与C偶联过程中产生的立体化学是通过对映体富集的烯丙基硅烷3和醛139之间的立体特异性抗S（E）2'反应控制的。 ，并通过乙烯基硅烷的碘去甲硅烷基化151-> 152保留构型，并通过Nozaki-Hiyama

  DOI：

  10.1039/b316899a
• 作为产物：
  描述：

  (R)-3-(tert-butyldimethylsilyloxy)-2-methylpropan-1-ol 在 草酰氯 、 4 A molecular sieve 、 二甲基亚砜 、 三乙胺 作用下， 以 甲苯 为溶剂， 反应 4.58h， 生成 (2S,3R,4R)-1-(tert-butyldimethylsilyloxy)-2,4-dimethylhex-5-ene-3-ol
  参考文献：
  名称：

  Roush, William R.; Palkowitz, Alan D.; Ando, Kaori, Journal of the American Chemical Society, 1990, vol. 112, # 17, p. 6348 - 6359

  摘要：

  DOI：

文献信息

• Diastereoselective Synthesis of Useful Building Blocks by Crotylation of β-Branched α-Methylaldehydes with Potassium Crotyltrifluoroborates
  作者：Kyosuke Tanaka、Yukiko Fujimori、Yoko Saikawa、Masaya Nakata

  DOI：10.1021/jo801106b

  日期：2008.8.1

  was realized by the substrate-controlled crotylation of β-branched α-methylaldehydes with potassium crotyltrifluoroborates. Especially, crotylation of 2-(1,3-dithian-2-yl)propanal with potassium (E)-crotyltrifluoroborate afforded, in good yield and with excellent diastereoselectivity, a useful building block that has different and potential functional groups on both ends.

  具有连续的甲基，羟基和甲基取代基的立体三单元组的非对映选择性结构是通过β-支化的α-甲基醛与巴豆基三氟硼酸钾的底物控制的丁酰化实现的。尤其是，用（E）-巴豆基三氟硼酸钾对2-（1,3-二苯-2-基）丙醛进行丁酰化，以高收率和优异的非对映选择性提供了有用的结构单元，该结构单元的两端具有不同的和潜在的官能团。
• Direct Generation of Acyclic Polypropionate Stereopolyads <i>via</i> Double Diastereo- and Enantioselective Iridium-Catalyzed Crotylation of 1,3-Diols: Beyond Stepwise Carbonyl Addition in Polyketide Construction
  作者：Xin Gao、Hoon Han、Michael J. Krische

  DOI：10.1021/ja204570w

  日期：2011.8.17

  cyclometalated iridium catalyst (R)-I derived from [Ir(cod)Cl](2), allyl acetate, 4-cyano-3-nitrobenzoic acid, and the chiral phosphine ligand (R)-SEGPHOS, α-methylallyl acetate engages 1,3-propanediol (1a) and 2-methyl-1,3-propanediol (1b) in double carbonyl crotylation from the alcohol oxidation level to deliver the C(2)-symmetric and pseudo-C(2)-symmetric stereopolyads 2a and 3a, respectively, with exceptional

  在使用衍生自 [Ir(cod)Cl](2)、乙酸烯丙酯、4-氰基-3-硝基苯甲酸和手性膦配体 (R)-的环金属化铱催化剂 (R)-I 进行转移氢化的条件下SEGPHOS，α-甲基烯丙基乙酸酯与 1,3-丙二醇 (1a) 和 2-甲基-1,3-丙二醇 (1b) 从醇氧化水平进行双羰基巴豆化反应，以提供 C(2)-对称和假-C (2)-对称立体多聚体 2a 和 3a，分别具有反非对映选择性和对映选择性的特殊控制。值得注意的是，聚丙酸酯立体五元组 3a 主要以 16 种可能的立体异构体中的一种形成。3a 的去对称化很容易在碘醚化形成吡喃 4 后实现。 3a 的直接生成能够显着简化先前制备的聚丙酸酯亚结构的方法，正如利福霉素 S 的 C19-C27（八步，最初在 26 步中制备）和细胞霉素 C 的 C19-C25 的合成（八步，最初以 15 步制备）所证明的。本转移氢化协议代表了聚酮化合物结构中手
• SYNTHESIS OF (S,S)-DIISOPROPYL TARTRATE (E)-CROTYLBORONATE AND ITS REACTION WITH ALDEHYDES: (2R,3R,4R)-1,2-DIDEOXY-2-ETHENYL-4,5-O-(1-METHYLETHYLIDENE)-XYLITOL
  作者：Sun, Huikai、Roush, William R.

  DOI：10.15227/orgsyn.088.0181

  日期：——
• A More Comprehensive and Highly Practical Solution to Enantioselective Aldehyde Crotylation
  作者：Hyunwoo Kim、Stephen Ho、James L. Leighton

  DOI：10.1021/ja200712f

  日期：2011.5.4

  The enantioselective crotylation of aldehydes with 1,2-diaminochlorocrotylsilane reagents is effectively catalyzed by Sc(OTf)(3). The one significant limitation on the utility of these reagents - substrate scope - has thus been addressed. The net result is the most comprehensive and highly practical method for enantioselective aldehyde crotylation yet advanced.
• N,N'-Bis(2,2,2-trifluoroethyl)-N,N'-ethylenetartramide: An Improved Chiral Auxiliary for the Asymmetric Allylboration Reaction
  作者：William R. Roush、Paul T. Grover

  DOI：10.1021/jo00117a036

  日期：1995.6

  N,N-Bis(2,2,2-trifluoroethyl)-N,N'-ethylenetartramide (8), synthesized by a simple four-step sequence from ethylenediamine and benzylidenetartaric acid, was designed in anticipation that the derived allylboronates 9-11 would display enhanced reactivity owing to the inductive effect of the N-trifluoroethyl substituents that would increase the Lewis acidity of the boron atom of the B-allyl-1,3,2-dioxaborolanes. Reagents 9-11 were synthesized by transesterification of 8 with the crystalline and easily purified allylboronate diethanolamine complexes 13, 19, and 25. Allylboronate 9 is ca. 100-fold more reactive than 6 and is also substantially more useful than the previously reported allyboronate 4, which suffers from very poor solubility in toluene at -78 degrees C. Most importantly, allylboronates 9-11 are significantly more enantioselective than the parent tartrate allylboronates 1-3 and rank among the most highly enantioselective allylboron reagents yet reported. Reactions of 9-11 with aldehydes are performed in THF at- -78 or -55 degrees C for 5-12 h periods. The enantioselectivity realized in reactions with achiral aldehydes is 92-95% ee (Table 2), and excellent diastereoselectivity is achieved in double asymmetric reactions with chiral aldehydes 15a, 15b, and 33 (Tables 3 and 4). For example, 16 and 28 are now available with a minimum selectivity of 92% from reactions of 15a and 15b with allylboronate 9, while the crotylboration products 29, 30, and 31 are available with a minimum selectivity of 90% (usually greater than or equal to 95%) from reactions of 15a and 15b with crotylboronates 10 and 11; the fourth isomer, 32a, is available with 83% selectivity. Chiral reagents 9-11 thus appear well suited for application to complex problems in organic synthesis.