(S)-3,4-Bis-benzyloxy-1-(tert-butyl-diphenyl-silanyloxy)-butan-2-one | 153096-71-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (S)-3,4-Bis-benzyloxy-1-(tert-butyl-diphenyl-silanyloxy)-butan-2-one
• 英文别名: (3S)-1-[tert-butyl(diphenyl)silyl]oxy-3,4-bis(phenylmethoxy)butan-2-one
• CAS: 153096-71-0
• 化学式: C₃₄H₃₈O₄Si
• 分子量: 538.759
• InChiKey: AITQRGZUNQWZHF-XIFFEERXSA-N

物化性质

• 沸点：
  613.1±55.0 °C(Predicted)
• 密度：
  1.11±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.93
• 重原子数：
  39
• 可旋转键数：
  14
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (S)-3,4-Bis-benzyloxy-1-(tert-butyl-diphenyl-silanyloxy)-butan-2-one 在 sodium hydroxide 、 甲基锂 、 臭氧 作用下， 以 正己烷 、 二氯甲烷 为溶剂， 反应 1.0h， 生成 methyl (3R,4S)-4,5-bis(benzyloxy)-3-(tert-butyldiphenylsilyloxymethyl)-3-hydroxypentanoate
  参考文献：
  名称：

  Stereoselective allylations of erythrulose derivatives under anhydrous conditions

  摘要：

  We have investigated a number of nucleophilic additions or allylating reagents to several alpha,alpha ',beta -trioxygenated ketones (O-protected erythrulose derivatives), Reagents based on lithium. magnesium. copper and titanium stereoselectivities and did not display any recognizable trend in the sense of stereoselection. In contrast, reactions involving silicon and tin derivatives were highly stereoselective and gage rise to essentially a single diastereoisomer, the structure of which depended group. Thus, alpha,beta -di-O-benzylated derivatives experienced almost exclusive addition to the carbonyl Si on the type or protecting group side, whereas alpha,beta -O,O-alkylidene derivatives (dioxolane acetals) yielded the opposite diastereoisomers as a result of addition to the Re side. These results Suggest the intermediacy of a-chelates in the additions or silicon and tin reagents to the di-O-benzylated derivatives. In contrast, the opposite stereoisomers. formed in the reactions of dioxolanes. are believed to be formed through Felkin-Anh transition states, pointing to the reluctance of acetal ox gens to participate in chelated intermediates. (C) 2001 Published by Elsevier Science Ltd.

  DOI：

  10.1016/s0957-4166(01)00262-2
• 作为产物：
  描述：

  1,2-di-O-benzyl-L-threitol 在 4-二甲氨基吡啶 、 草酰氯 、 二甲基亚砜 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 19.42h， 生成 (S)-3,4-Bis-benzyloxy-1-(tert-butyl-diphenyl-silanyloxy)-butan-2-one
  参考文献：
  名称：

  Marco, J. Alberto; Carda, Miguel; Gonzalez, Florenci, Liebigs Annalen, 1996, # 11, p. 1801 - 1810

  摘要：

  DOI：

文献信息

• Diastereoselectivity of the reactions of organolithium reagents with protected erythrulose oximes
  作者：J.A. Marco、M. Carda、J. Murga、S. Rodrı́guez、E. Falomir、M. Oliva

  DOI：10.1016/s0957-4166(98)00145-1

  日期：1998.5

  The addition of organolithium reagents to the CN bond of several erythrulose-derived chiral (E)- and (Z)-ketoxime ethers has been shown to be highly diastereoselective in the case of the (E)-isomers. Chelated and nonchelated transition states have been proposed to rationalize these results, with additional support of computational methods.

  有机锂试剂的几个赤藓酮糖衍生的手性（的CN键的加成ë） -和（Ž）-ketoxime醚已被证明是在（的情况下高度非对映ë） -异构体。已经提出了螯合和非螯合的过渡态来合理化这些结果，并附加了计算方法的支持。
• Diastereoselective additions of organolithium reagents to the CN bond of protected erythrulose oxime ethers. Synthesis of enantiopure α,α-disubstituted α-aminiacids
  作者：J.Alberto Marco、Miguel Carda、Juan Murga、Florenci González、Eva Falomir

  DOI：10.1016/s0040-4039(97)00165-2

  日期：1997.3

  The addition of organolithium reagents to the CN bond of several erythrulose-derived chiral (E)- and (Z)-ketoxime ethers has been shown to be highly diastereoselective for the (E)-isomers. A chelated transition state has been proposed to explain this result. The addition products were converted into the two α,α-disubstituted α-aminoacids (R)-2-(−)-methylserine and (R)-(+)-2-phenylserine.

  已经证明，将有机锂试剂加到几种由赤藻糖衍生的手性（E）-和（Z）-酮肟醚的CN键上对（E）-异构体具有很高的非对映选择性。已经提出了螯合的过渡态来解释该结果。将加成产物转化为两个α，α-二取代的α-氨基酸（R）-2-（-）-甲基丝氨酸和（R）-（+）-2-苯基丝氨酸。
• Diastereoselectivity in Organometallic Additions to the Carbonyl Group of Protected Erythrulose Derivatives
  作者：J. Alberto Marco、Miguel Carda、Florenci González、Santiago Rodríguez、Encarna Castillo、Juan Murga

  DOI：10.1021/jo9716744

  日期：1998.2.1

  We have investigated a number of nucleophillic additions to L-erythrulose derivatives (4-12) bearing protective O-silyl, O-benzyl, and O-trityl groups in various relative positions. The results are discussed in the frame of chelated vs nonchelated transition states with additional support of previously published theoretical calculations. Sound evidence appears to exist for the formation of alpha-chelates as the key intermediates in nucleophillic additions to these alpha,beta-dioxygenated ketones. Since such evidence is still lacking in the case of beta-chelates, proposals of their intermediacy have been relegated in favor of the more solid Felkin-Anh model, which predicts the same stereochemical result. The behavior of these highly functionalized ketones does not always match that of structurally similar aldehydes.
• Highly diastereoselective additions of organometallic reagents to 1-O-silylated 3,4-Di-O-benzyl-L-erythrulose derivatives
  作者：Miguel Carda、Florenci González、Santiago Rodríguez、J.Alberto Marco

  DOI：10.1016/s0957-4166(00)80421-8

  日期：1993.8

  The diastereoselectivity of the addition of several organometallic reagents to the carbonyl group of the title compounds has been investigated, Some organomagnesium reagents display high diastereoselectivities (90-99%) and the major products are those predicted by the alpha-chelation model.