8-isobutoxy-1,4-dithiaspiro<4.5>dec-7-en-6-one | 155996-44-4

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫代缩醛
• 英文名称: 8-isobutoxy-1,4-dithiaspiro<4.5>dec-7-en-6-one
• 英文别名: 8-(2-Methylpropoxy)-1,4-dithiaspiro[4.5]dec-7-en-6-one
• CAS: 155996-44-4
• 化学式: C₁₂H₁₈O₂S₂
• 分子量: 258.406
• InChiKey: SSMWCFASZRRMJD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  76.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  8-isobutoxy-1,4-dithiaspiro<4.5>dec-7-en-6-one 在 氢氧化钾 、 sodium hydroxide 、 四丁基硫酸氢铵 、 二异丁基氢化铝 、 N,N-二甲基甲酰胺二新戊基乙缩醛 作用下， 以 四氢呋喃 、 乙醚 、 乙醇 、 甲苯 、 苯 为溶剂， 反应 2.34h， 生成 4-(2-propynylthio)-2-vinyl-2-cyclohexen-1-one dimethylene dithioketal
  参考文献：
  名称：

  Periselective intramolecular cycloaddition of allenyl thioethers and allenyl sulfones

  摘要：

  The thermal intramolecular cycloaddition reactions of variously substituted allenyl 3-vinyl-2-cyclohexenyl thioethers and sulfones and the base-catalyzed intramolecular cycloaddition reactions of several propargyl 3-vinyl-2-cyclohexenyl thioethers have been investigated. When there was no steric congestion in the transition state, the substrates gave Diels-Alder ([4 + 2]) adducts, When a substituent was introduced at C(2) of the cyclohexene in such way as to disfavor the s-cis conformation of the butadiene moiety in the transition state, novel [2 + 2] cycloadducts 4, 37, and 40 were obtained from allenyl sulfones, 1b, 25, and 27, and allenyl thioether 20b underwent a tandem [2 + 2] cycloaddition/[3,3]-sigmatropic rearrangement reaction sequence to produce 30 as the major product. C(4)-substituted compounds 22a,b and 28 underwent Diels-Alder ([4 + 2]) reactions exclusively; C(G)-substituted allenyl thioethers 24a,b and 26 did not afford the cycloadducts. The structure of [2 + 2] adduct 4 was confirmed by single-crystal X-ray analysis to be a strained tricyclic containing 4-, 5-, and 6-membered rings.

  DOI：

  10.1021/jo00086a010
• 作为产物：
  描述：

  2-(ethoxycarbonyl)-2-(3-oxobutyl)-1,3-dithiolane 生成 8-isobutoxy-1,4-dithiaspiro<4.5>dec-7-en-6-one
  参考文献：
  名称：

  Yeo Sin-Koo, Shiro Motoo, Kanematsu Ken, J. Org. Chem, 59 (1994) N 7, S 1621-1632

  摘要：

  DOI：

文献信息

• Nagashima, Shigeru; Takaoka, Yumiko; Kawakami, Kumiko, Heterocycles, 1995, vol. 40, # 2, p. 507 - 510
  作者：Nagashima, Shigeru、Takaoka, Yumiko、Kawakami, Kumiko、Shiro, Motoo、Kanematsu, Ken

  DOI：——

  日期：——
• Yeo Sin-Koo, Shiro Motoo, Kanematsu Ken, J. Org. Chem, 59 (1994) N 7, S 1621-1632
  作者：Yeo Sin-Koo, Shiro Motoo, Kanematsu Ken

  DOI：——

  日期：——
• Periselective intramolecular cycloaddition of allenyl thioethers and allenyl sulfones
  作者：Sin-Koo Yeo、Motoo Shiro、Ken Kanematsu

  DOI：10.1021/jo00086a010

  日期：1994.4

  The thermal intramolecular cycloaddition reactions of variously substituted allenyl 3-vinyl-2-cyclohexenyl thioethers and sulfones and the base-catalyzed intramolecular cycloaddition reactions of several propargyl 3-vinyl-2-cyclohexenyl thioethers have been investigated. When there was no steric congestion in the transition state, the substrates gave Diels-Alder ([4 + 2]) adducts, When a substituent was introduced at C(2) of the cyclohexene in such way as to disfavor the s-cis conformation of the butadiene moiety in the transition state, novel [2 + 2] cycloadducts 4, 37, and 40 were obtained from allenyl sulfones, 1b, 25, and 27, and allenyl thioether 20b underwent a tandem [2 + 2] cycloaddition/[3,3]-sigmatropic rearrangement reaction sequence to produce 30 as the major product. C(4)-substituted compounds 22a,b and 28 underwent Diels-Alder ([4 + 2]) reactions exclusively; C(G)-substituted allenyl thioethers 24a,b and 26 did not afford the cycloadducts. The structure of [2 + 2] adduct 4 was confirmed by single-crystal X-ray analysis to be a strained tricyclic containing 4-, 5-, and 6-membered rings.