(S)-(2u,6l)-2-ethyl-6-methyl-3-(1-methylethyl)-1,3,2-oxazaphosphorinane 2-sulfide | 173006-04-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: (S)-(2u,6l)-2-ethyl-6-methyl-3-(1-methylethyl)-1,3,2-oxazaphosphorinane 2-sulfide
• 英文别名: (2R,6S)-2-ethyl-6-methyl-3-propan-2-yl-2-sulfanylidene-1,3,2λ5-oxazaphosphinane
• CAS: 173006-04-7
• 化学式: C₉H₂₀NOPS
• 分子量: 221.304
• InChiKey: IHOQDODDPRGHAW-JOYOIKCWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.84
• 重原子数：
  13.0
• 可旋转键数：
  2.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  12.47
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  1-碘丁烷 、 (S)-(2u,6l)-2-ethyl-6-methyl-3-(1-methylethyl)-1,3,2-oxazaphosphorinane 2-sulfide 在 正丁基锂 作用下， 生成 (S)-(2u,6l,1'u)-6-methyl-3-(1-methylethyl)-2-(1'-methylpentyl)-1,3,2-oxazaphosphorinane 2-sulfide 、 (S)-(2u,6l,1'l)-6-methyl-3-(1-methylethyl)-2-(1'-methylpentyl)-1,3,2-oxazaphosphorinane 2-sulfide
  参考文献：
  名称：

  Alkylations of Chiral, Phosphoryl- and Thiophosphoryl-Stabilized Carbanions

  摘要：

  A general method for the preparation of enantiomerically enriched phosphonic acids and phosphonates with three different a-substitution patterns (aryl, alkyl, and alkoxy) has been developed. Anions derived from enantiomerically enriched thiophosphonamidates (2-thioxo-1,3,2-oxazaphosphorinanes) underwent smooth electrophilic substitutions with excellent diastereoselectivity for both cis and trans stereoisomers. Highly enantioselective synthesis of alpha-alkoxyphosphonates in either antipodal form can be achieved by the employment of highly diastereoselective alkylation with anions derived from the corresponding P-methoxymethyl analogs in the presence of HMPA or PMDTA. Implications for the aggregation states and reactive conformations of the anions are discussed.

  DOI：

  10.1021/ja00153a009
• 作为产物：
  描述：

  (S)-(2l,6l)-2-ethyl-6-methyl-3-(1-methylethyl)-1,3,2-oxazaphosphorinane 2-oxide 在 劳森试剂 作用下， 以 甲苯 为溶剂， 反应 3.0h， 以75.8%的产率得到(S)-(2u,6l)-2-ethyl-6-methyl-3-(1-methylethyl)-1,3,2-oxazaphosphorinane 2-sulfide
  参考文献：
  名称：

  Alkylations of Chiral, Phosphoryl- and Thiophosphoryl-Stabilized Carbanions

  摘要：

  A general method for the preparation of enantiomerically enriched phosphonic acids and phosphonates with three different a-substitution patterns (aryl, alkyl, and alkoxy) has been developed. Anions derived from enantiomerically enriched thiophosphonamidates (2-thioxo-1,3,2-oxazaphosphorinanes) underwent smooth electrophilic substitutions with excellent diastereoselectivity for both cis and trans stereoisomers. Highly enantioselective synthesis of alpha-alkoxyphosphonates in either antipodal form can be achieved by the employment of highly diastereoselective alkylation with anions derived from the corresponding P-methoxymethyl analogs in the presence of HMPA or PMDTA. Implications for the aggregation states and reactive conformations of the anions are discussed.

  DOI：

  10.1021/ja00153a009