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3-methoxy-2,2,6,6-tetramethyl-heptan-4-one | 51392-31-5

中文名称
——
中文别名
——
英文名称
3-methoxy-2,2,6,6-tetramethyl-heptan-4-one
英文别名
3-Methoxy-2,2,6,6-tetramethylheptan-4-one
3-methoxy-2,2,6,6-tetramethyl-heptan-4-one化学式
CAS
51392-31-5
化学式
C12H24O2
mdl
——
分子量
200.321
InChiKey
LNZNMWIYXJSWTN-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    258.3±13.0 °C(Predicted)
  • 密度:
    0.868±0.06 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    3.3
  • 重原子数:
    14
  • 可旋转键数:
    5
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.92
  • 拓扑面积:
    26.3
  • 氢给体数:
    0
  • 氢受体数:
    2

反应信息

点击查看最新优质反应信息

文献信息

  • <i>cis</i>-2,3-Di-<i>tert</i>-butylcyclopropanones
    作者:T.S. Sorensen、F. Sun
    DOI:10.1139/v97-123
    日期:1997.7.1

    The preparation of the strained cis-2,3-di-tert-butylcyclopropanone 2 from the acyclic compound, α,α′-dibromodineopentyl ketone 1, using a previously reported methodology, is dramatic evidence of both the existence of oxyallyl intermediates in the mechanism of this reaction, and of the integrity with which oxyallyls ring-close to cyclopropanones by a disrotatory route. Because of the bulky cis substituents, cyclopropanone 2 exhibits a number of unusual spectroscopic features (as compared to the trans isomer 5). With the aid of ab initio calculations on 2 and 5, it can be shown that the C2—C3 bond in 2 interacts with the carbonyl π-orbitals, thus causing the carbonyl oxygen to bend 12° out of the plane; this interaction is absent in 5 and the latter has a planar carbonyl group. As with other cyclopropanones, 2 can be photochemically decarbonylated. This process itself appears to be stereospecific even though highly strained alkenes are produced. Cyclopropanone 2 is thermally rearranged to the trans isomer 5 and the kinetics for this are reported; our favoured mechanism involves oxyallyl intermediates. Other reactions of 2 also appear to proceed through these oxyallyl species; for example, alcohols initially add to 2 to give α-alkoxy ends, solutions of 2 enter into very facile diene cycloadditions, and the dimerization of neat 2 also appears to involve these oxyallyl species. Keywords: cyclopropanones, oxyallyl, stereomutation, stereospecific decarbonylation, nonplanar carbonyl.

    从无环化合物α,α'-二二新戊1,使用先前报道的方法制备高度应变的顺式2,3-二叔丁基环丙酮2,是这种反应中丙烯中间体存在以及丙烯通过反转路径环闭合成环丙酮的完整性的戏剧性证据。由于体积庞大的顺式取代基,与反式异构体5相比,环丙酮2表现出许多不寻常的光谱特征。通过对2和5的从头计算,可以显示2中的C2-C3键与羰基π轨道相互作用,从而导致羰基向外弯曲12°; 在5中不存在这种相互作用,后者具有平面的羰基基团。与其他环丙酮一样,2可以光化学羰作用。即使产生高度应变的烃,该过程本身似乎也是立体特异性的。环丙酮2被热重排为反式异构体5,报道了这个过程的动力学; 我们喜欢的机制涉及丙烯中间体。2的其他反应似乎也通过这些丙烯物种进行; 例如,醇最初添加到2中以给出α-烷末端,2的溶液进入非常容易的二基环加成反应,而无2的二聚似乎也涉及这些丙烯物种。关键词:环丙酮丙烯,立体异构,立体特异性羰作用,非平面羰基。
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