(S)-4-(1-methylethyl)-3-<(E)-1-oxo-3-phenylprop-2-enyl>-5,5-diphenyloxazolidin-2-one | 218800-36-3

• 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)-4-(1-methylethyl)-3-<(E)-1-oxo-3-phenylprop-2-enyl>-5,5-diphenyloxazolidin-2-one
• 英文别名: (S)-4-(1-methylethyl)-3-[(E)-3-phenylprop-2-enoyl]-5,5-diphenyloxazolidin-2-one；(4S)-5,5-diphenyl-3-[(E)-3-phenylprop-2-enoyl]-4-propan-2-yl-1,3-oxazolidin-2-one
• CAS: 218800-36-3
• 化学式: C₂₇H₂₅NO₃
• 分子量: 411.5
• InChiKey: SMBZIMRSYPZMNJ-JSSZYCLJSA-N

物化性质

• 沸点：
  537.584±60.00 °C(Press: 760.00 Torr)(predicted)
• 密度：
  1.188±0.06 g/cm3(Temp: 25 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6.2
• 重原子数：
  31
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  46.6
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4-甲氧基苯基溴化镁 、 (S)-4-(1-methylethyl)-3-<(E)-1-oxo-3-phenylprop-2-enyl>-5,5-diphenyloxazolidin-2-one 在 copper(I) bromide dimethylsulfide complex 、 水 、 氯化铵 作用下， 以 四氢呋喃 为溶剂， 反应 0.17h， 生成 (S)-3-[(R)-3-(4-methoxyphenyl)-3-phenylpropanoyl]-4-(1-methylethyl)-5,5-diphenyloxazolidin-2-one 、 (S)-3-[(S)-3-(4-methoxyphenyl)-3-phenylpropanoyl]-4-(1-methylethyl)-5,5-diphenyloxazolidin-2-one
  参考文献：
  名称：

  手性助剂DIOZ和TRIOZ在共轭加成中的应用以及与其他助剂的比较

  摘要：

  许多ñ -丙烯酰基，Ñ -crotonoyl-，ñ - （3,3,3- trifluorocrotonoyl） - ，Ñ -cinnamoyl-，和ñ - （3- nitroacryloyl）-4-异丙基或-4-苯基唑烷-2-酮与偕二苯基取代，即，7 - 15，已被制备并用于有机铜试剂的共轭加成（Me中，我PR，pH值，4-MeOPh）在β -羰基（表2），并在的α -羰基位置（NO 2 -衍生物11在方案3中）。将产率和非对映选择性与先前测试的烯酰基-恶唑烷酮（表2）进行比较。使用4-Ph衍生物总是观察到最高的非对映选择性（> 90％）（Hruby效应）。硝基丙烯酰基-恶唑烷酮和相应的苯薄荷醇酯的非对映选择性加成较少（方案3）。还测试了由3-（1-甲基乙基）-5,5-二苯基恶唑烷二-2-酮（DIOZ）衍生的Li 2-烯酸酯-亚硝酸盐的α-羰基烷基化反应（方案4）。描述了三种丙烯酰基-恶唑

  DOI：

  10.1002/hlca.200900385
• 作为产物：
  描述：

  L-缬氨酸甲酯 在 sodium hydroxide 、 正丁基锂 、 三乙胺 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 二氯甲烷 为溶剂， 反应 18.0h， 生成 (S)-4-(1-methylethyl)-3-<(E)-1-oxo-3-phenylprop-2-enyl>-5,5-diphenyloxazolidin-2-one
  参考文献：
  名称：

  A Useful Modification of theEvans Auxiliary: 4-Isopropyl-5,5-diphenyloxazolidin-2-one

  摘要：

  The 4-isopropyl-5,5-diphenyloxazolidinone (1) is readily prepared from (R)- or (S)-valine ester, PhMgBr, and ethyl chlorocarbonate. It has a melting point of ca. 250 degrees, a low solubility in most organic solvents, and a C=O group which is sterically protected from nucleophilic attack. Thus; the soluble N-acyl-oxazolidinones (7-16) can be prepared from 1 with BuLi at temperatures around 0 degrees instead of - 78 degrees (Scheme 3): their Li enolates can be generated with BuLi, rather than with LDA, and deacylation in the final step of the procedure can be achieved with NaOH at ambient temperatures (Scheme 12),with facile recovery of the precipitating auxiliary 1 (filtering, washing, and drying). The following reactions of N-acyl-oxazolidinones from 1 have been investigated: alkylations (Scheme 4), aminomethylations and hydroxymethylations (Scheme 5), aldol additions (Schemes 6 and 7), Michael additions (Schemes 9 and 10), and a (4 + 2) cycloaddition (Scheme II). The well-known features of reactions following the Evans methodology (yield, diastereoselectivity, dependence on conditions, counter ions, additives etc.) prevail in these transformations. Most products, however, have higher melting points and a much more pronounced crystallization tendency than those derived from conventional oxazolidinones, and can thus be purified by recrystallization, avoiding chromatography (Table 1). The disadvantage of 1 having a higher molecular weight (ca. 150 Da) than the non-phenyl-substituted auxiliary is more than compensated by the ease of its application, especially on large scale. A number of crystal structures of oxazolidinones derived from 1 and a TICl4 complex of an oxazolidinone are described and discussed in view of the diastereoselective-reaction mechanisms.

  DOI：

  10.1002/(sici)1522-2675(19981111)81:11<2093::aid-hlca2093>3.0.co;2-x

文献信息

• Applications of the Chiral Auxiliaries DIOZ and TRIOZ for Conjugate Additions and Comparison with Other Auxiliaries
  作者：Hanspeter Sprecher、Stefan Pletscher、Manuel Möri、Roger Marti、Christoph Gaul、Krystyna Patora-Komisarska、Ekatarina Otchertianova、Albert K. Beck、Dieter Seebach

  DOI：10.1002/hlca.200900385

  日期：2010.1

  prepared and used for conjugate additions of organocuprate reagents (Me, iPr, Ph, 4‐MeOPh) in the β‐carbonyl (Table 2) and in the α‐carbonyl position (NO2‐derivative 11 in Scheme 3). The yields and diastereoselectivities are compared with previously tested enoyl‐oxazolidinones (Table 2). Highest diastereoselectivities (>90%) are always observed with the 4‐Ph derivatives (Hruby effect). Nitroacryloyl‐oxazolidinones

  许多ñ -丙烯酰基，Ñ -crotonoyl-，ñ - （3,3,3- trifluorocrotonoyl） - ，Ñ -cinnamoyl-，和ñ - （3- nitroacryloyl）-4-异丙基或-4-苯基唑烷-2-酮与偕二苯基取代，即，7 - 15，已被制备并用于有机铜试剂的共轭加成（Me中，我PR，pH值，4-MeOPh）在β -羰基（表2），并在的α -羰基位置（NO 2 -衍生物11在方案3中）。将产率和非对映选择性与先前测试的烯酰基-恶唑烷酮（表2）进行比较。使用4-Ph衍生物总是观察到最高的非对映选择性（> 90％）（Hruby效应）。硝基丙烯酰基-恶唑烷酮和相应的苯薄荷醇酯的非对映选择性加成较少（方案3）。还测试了由3-（1-甲基乙基）-5,5-二苯基恶唑烷二-2-酮（DIOZ）衍生的Li 2-烯酸酯-亚硝酸盐的α-羰基烷基化反应（方案4）。描述了三种丙烯酰基-恶唑
• A Useful Modification of theEvans Auxiliary: 4-Isopropyl-5,5-diphenyloxazolidin-2-one
  作者：Tobias Hintermann、Dieter Seebach

  DOI：10.1002/(sici)1522-2675(19981111)81:11<2093::aid-hlca2093>3.0.co;2-x

  日期：1998.11.11

  The 4-isopropyl-5,5-diphenyloxazolidinone (1) is readily prepared from (R)- or (S)-valine ester, PhMgBr, and ethyl chlorocarbonate. It has a melting point of ca. 250 degrees, a low solubility in most organic solvents, and a C=O group which is sterically protected from nucleophilic attack. Thus; the soluble N-acyl-oxazolidinones (7-16) can be prepared from 1 with BuLi at temperatures around 0 degrees instead of - 78 degrees (Scheme 3): their Li enolates can be generated with BuLi, rather than with LDA, and deacylation in the final step of the procedure can be achieved with NaOH at ambient temperatures (Scheme 12),with facile recovery of the precipitating auxiliary 1 (filtering, washing, and drying). The following reactions of N-acyl-oxazolidinones from 1 have been investigated: alkylations (Scheme 4), aminomethylations and hydroxymethylations (Scheme 5), aldol additions (Schemes 6 and 7), Michael additions (Schemes 9 and 10), and a (4 + 2) cycloaddition (Scheme II). The well-known features of reactions following the Evans methodology (yield, diastereoselectivity, dependence on conditions, counter ions, additives etc.) prevail in these transformations. Most products, however, have higher melting points and a much more pronounced crystallization tendency than those derived from conventional oxazolidinones, and can thus be purified by recrystallization, avoiding chromatography (Table 1). The disadvantage of 1 having a higher molecular weight (ca. 150 Da) than the non-phenyl-substituted auxiliary is more than compensated by the ease of its application, especially on large scale. A number of crystal structures of oxazolidinones derived from 1 and a TICl4 complex of an oxazolidinone are described and discussed in view of the diastereoselective-reaction mechanisms.