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3,5-dibromo-2,2,6,6-tetramethyl-heptan-4-one | 23438-05-3

中文名称
——
中文别名
——
英文名称
3,5-dibromo-2,2,6,6-tetramethyl-heptan-4-one
英文别名
3,5-Dibromo-2,2,6,6-tetramethylheptan-4-one
3,5-dibromo-2,2,6,6-tetramethyl-heptan-4-one化学式
CAS
23438-05-3
化学式
C11H20Br2O
mdl
——
分子量
328.087
InChiKey
DPQNJTSTJKBEQO-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

  • 熔点:
    69-70 °C
  • 沸点:
    80-85 °C(Press: 0.1 Torr)
  • 密度:
    1.399±0.06 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    5.1
  • 重原子数:
    14
  • 可旋转键数:
    4
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.91
  • 拓扑面积:
    17.1
  • 氢给体数:
    0
  • 氢受体数:
    1

安全信息

  • 海关编码:
    2914700090

SDS

SDS:8bb81c7971859145a2832c3b0c806881
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反应信息

点击查看最新优质反应信息

文献信息

  • Action des homocuprates sur les cetones α,α′-dibromees. Une nouvelle methode de synthese de cetones encombrees
    作者:C. Lion、J.-E. Dubois
    DOI:10.1016/0040-4020(75)85061-7
    日期:1975.1
    The reaction between alkyllithium homocuprates and α,α′-dibromoketones permits the monoalkylation of ketones after hydrolysis of the reaction intermediate; the latter reacts with an excess of alkyl halide and gives the dialkylated product. Four alkylation reactions (methylation, ethylation, isopropylation and t-butylation) of α,α′-dibromoketones have been studied. While monoalkylation leads to secondary/primary
    烷基锂均铜酸盐与α,α'-二溴代酮之间的反应使反应中间体水解后酮单烷基化。后者与过量的烷基卤反应,得到二烷基化产物。研究了α,α′-二溴酮的四个烷基化反应(甲基化,乙基化,异丙基化和叔丁基化)。虽然单烷基化从双伯和双仲结构产生仲/伯和叔/仲酮,但是二烷基化允许合成双仲和双叔酮。但是,不可能以相同的结构引入两个第三级。
  • Highly Sterically Hindered Olefins: A Case of <i>E</i>- and <i>Z</i>-Di-<i>tert</i>-butyl α,β-Unsaturated Acids
    作者:Alex S. Ionkin、William J. Marshall、Brian M. Fish
    DOI:10.1021/ol800808g
    日期:2008.6.5
    Use of a superbase in the Favorskii rearrangement of 12 resulted in the synthesis of highly sterically hindered olefins, (E)-2- tert-butyl-4,4-dimethyl-pent-2-enoic acid (4) and (Z)-2- tert-butyl-4,4-dimethyl-pent-2-enoic acid (3).
    在12的Favorskii重排中使用超碱可合成高度空间受阻的烯烃(E)-2-叔丁基-4,4-二甲基戊-2-烯酸(4)和(Z)- 2-叔丁基-4,4-二甲基-戊-2-烯酸(3)。
  • <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'-二溴二新戊酮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,是这种反应中氧丙烯中间体存在以及氧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,从而导致羰基氧向外弯曲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可以光化学脱羰作用。即使产生高度应变的烯烃,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氧丙烯中间体。2的其他反应似乎也通过这些氧丙烯物种进行; 例如,醇最初添加到2中以给出α-烷氧末端,2的溶液进入非常容易的二烯基环加成反应,而无水2的二聚似乎也涉及这些氧丙烯物种。关键词:环丙酮,氧丙烯,立体异构,立体特异性脱羰作用,非平面羰基。
  • Silver halide color photographic material
    申请人:KONICA CORPORATION
    公开号:EP0178788A1
    公开(公告)日:1986-04-23
    57 A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler having the following formula: wherein R, is a tertiary alkyl group; R2 is a secondary or tertiary alkyl group; X is a leaving group other than a hydrogen atom that leaves upon reaction with the oxidation product of a color developing agent.
    57 本发明公开了一种卤化银彩色感光材料,该材料在支撑体上具有至少一个卤化银乳剂层,所述卤化银乳剂层含有至少一个洋红色耦合剂,其结构式如下: 其中 R 是叔烷基;R2 是仲烷基或叔烷基;X 是与显色剂的氧化产物反应后离开的离去基团,而不是氢原子。
  • The tri-tert-butylcyclopropenyl cation
    作者:Joseph Ciabattoni、Edward C. Nathan
    DOI:10.1021/ja01018a077
    日期:1968.7
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