(1R,2S)-1-tert-butyldiphenylsilyloxymethyl-2-formyl-1-phenylcyclopropane | 843609-73-4

• 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: (1R,2S)-1-tert-butyldiphenylsilyloxymethyl-2-formyl-1-phenylcyclopropane
• 英文别名: (2S,3R)-4-(tert-butyldiphenylsiloxy)-2,3-methano-3-phenylbutanal；(1S,2R)-2-[[tert-butyl(diphenyl)silyl]oxymethyl]-2-phenylcyclopropane-1-carbaldehyde
• CAS: 843609-73-4
• 化学式: C₂₇H₃₀O₂Si
• 分子量: 414.62
• InChiKey: WAJRRWJDSCMYNA-KCWPFWIISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.72
• 重原子数：
  30
• 可旋转键数：
  8
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (1R,2S)-1-tert-butyldiphenylsilyloxymethyl-2-formyl-1-phenylcyclopropane 在 4-二甲氨基吡啶 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 20.0h， 生成
  参考文献：
  名称：

  The unusual 1,4-chelation-controlled nucleophilic addition to aldehydes with high stereoselectivity. A systematic study of stereoselectivity in the addition reaction of carbon nucleophiles to cis-substituted cyclopropanecarbaldehydes

  摘要：

  The addition reaction of carbon nucleophiles to cis-substituted cyclopropanecarbaldehydes was systematically investigated. Ab initio calculations of model cyclopropanecarbaldehydes suggested that the bisected s-cis and s-trans conformers are the only two minimum energy conformers, which are stabilized due to the pi-donating stereoelectronic effect of the cyclopropane ring. The experimental results of a series of substrates, that is, cyclopropanecarbaldehydes 1-5 bearing a cis-(tert-butyldiphenyisilyloxy)methyl group, a cis-benzyloxymethyl group, a cis-(p-methoxybenzyloxy)methyl group, cis-N,N-diethylcarbamoyl and trans-phenyl groups, and cis-(tert-butyldiphenylsilyloxy)methyl and trans-phenyl groups, respectively, showed that highly anti-selective Grignard additions could be realized. It turned out that it occurred via an unusual 7-membered 1,4-chelation-controlled pathway. Highly stereoselective Grignard addition via the chelation-controlled pathway occurred even in the reaction of the usually non-chelating silyl ether-type substrate 5. The results have great importance because the 1,4-chelation-controlled stereoselective addition reactions can indeed be realized. Under non-chelation conditions, the syn-products were produced with moderate stereoselectivity, which are likely to be formed via the bisected s-cis conformation-like transition state stabilized by the characteristic orbital interaction. These reactions, especially the chelation-controlled reaction, should be useful because of their t stereoselectivity and stereochemical predictability. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2004.05.063
• 作为产物：
  描述：

  (1R,5S)-1-phenyl-3-oxabicyclo[3.1.0]hexan-2-one 在 sodium tetrahydroborate 、 sodium hydride 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 4.0h， 生成 (1R,2S)-1-tert-butyldiphenylsilyloxymethyl-2-formyl-1-phenylcyclopropane
  参考文献：
  名称：

  The unusual 1,4-chelation-controlled nucleophilic addition to aldehydes with high stereoselectivity. A systematic study of stereoselectivity in the addition reaction of carbon nucleophiles to cis-substituted cyclopropanecarbaldehydes

  摘要：

  The addition reaction of carbon nucleophiles to cis-substituted cyclopropanecarbaldehydes was systematically investigated. Ab initio calculations of model cyclopropanecarbaldehydes suggested that the bisected s-cis and s-trans conformers are the only two minimum energy conformers, which are stabilized due to the pi-donating stereoelectronic effect of the cyclopropane ring. The experimental results of a series of substrates, that is, cyclopropanecarbaldehydes 1-5 bearing a cis-(tert-butyldiphenyisilyloxy)methyl group, a cis-benzyloxymethyl group, a cis-(p-methoxybenzyloxy)methyl group, cis-N,N-diethylcarbamoyl and trans-phenyl groups, and cis-(tert-butyldiphenylsilyloxy)methyl and trans-phenyl groups, respectively, showed that highly anti-selective Grignard additions could be realized. It turned out that it occurred via an unusual 7-membered 1,4-chelation-controlled pathway. Highly stereoselective Grignard addition via the chelation-controlled pathway occurred even in the reaction of the usually non-chelating silyl ether-type substrate 5. The results have great importance because the 1,4-chelation-controlled stereoselective addition reactions can indeed be realized. Under non-chelation conditions, the syn-products were produced with moderate stereoselectivity, which are likely to be formed via the bisected s-cis conformation-like transition state stabilized by the characteristic orbital interaction. These reactions, especially the chelation-controlled reaction, should be useful because of their t stereoselectivity and stereochemical predictability. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2004.05.063

文献信息

• Convenient synthesis of memantine analogues containing a chiral cyclopropane skeleton as a sigma-1 receptor agonist
  作者：Tetsuya Ezawa、Yuya Kawashima、Takuya Noguchi、Seunghee Jung、Nobuyuki Imai

  DOI：10.1016/j.tetasy.2016.12.010

  日期：2017.2

  We have achieved a convenient enantioselective synthesis of memantine analogues containing a chiral cyclopropane skeleton as a sigma-1 receptor agonist in 19-40% overall chemical yields from the corresponding 2-arylbut-2-ene-1,4-diols with moderate to excellent asymmetric yields via regioselective acetylation using porcine pancreas lipase, catalytic enantioselective Simmons-Smith reactions, and amidation in aqueous organic solvent. This synthetic route is more efficient and less expensive than conventional methods. (C) 2016 Elsevier Ltd. All rights reserved.