1-diazoheptan-2-one | 35522-40-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1-diazoheptan-2-one
• 英文别名: 1-Diazo-heptan-2-on
• CAS: 35522-40-8
• 化学式: C₇H₁₂N₂O
• 分子量: 140.185
• InChiKey: SCQQAWYWPCSZLM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  10
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  19.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  1-diazoheptan-2-one 在 potassium fluoride 、 三正丁基氢锡 、 反式-二叔丁基连二次硝酸酯 作用下， 生成 2-庚酮
  参考文献：
  名称：

  Radical addition to carbenoids. Chain reactions of α-diazo carbonyl compounds with triorganotin hydrides, tris(trimethylsilyl)silane and allyltributylstannane

  摘要：

  alpha-Diazo ketones RC(O)CH=N-2 react with tributyltin hydride at 60 degrees C in benzene to give the corresponding alpha-stannyl ketones RC(O)CH(2)SnBu(3), which exist in equilibrium with the stannyl enol ether tautomers R(Bu(3)SnO)C=CH2. The reactions are initiated by di-tert-butyl hyponitrite and follow a free-radical chain mechanism, Triphenyltin hydride and tris(trimethylsilyl)silane [(TMS)(3)SiH] react similarly, the latter to yield the alpha-silyl ketone RC(O)CH2Si(TMS)(3) which does not isomerise to the more stable silyl enol ether R[(TMS)(3)SiO]C=CH2 under the reaction conditions. This result indicates that TMS(3)Si reacts at the alpha-carbon atom of the alpha-diazo ketone to give R(CO)CHSiTMS(3), probably via an initial diazenyl radical adduct; triorganotin radicals are assumed to react in the same way, When the group R in the alpha-diazo ketone is but-3-enyl, the intermediate alpha-metalloalkyl radical undergoes 5-exo-cyclisation. Aliyltributylstannane reacts with a-diazo ketones and with ethyl alpha-diazoacetate in refluxing benzene, in the presence of 2,2'-azo(2-methylpropionitrile) as initiator, to give butenyl ketones RC(O)CH2CH2CH=CH2 and ethyl pent-4-enoate, respectively, after a hydrolytic work-up.

  DOI：

  10.1039/p19960000769
• 作为产物：
  描述：

  己酸 在 草酰氯 、 三乙胺 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 反应 4.0h， 生成 1-diazoheptan-2-one
  参考文献：
  名称：

  四酰基丙二醇酯催化重氮乙酰基环烷烃分解的不寻常产物

  摘要：

  重氮基乙酰基环烷烃的Rh 2（OAc）4辅助分解显示可产生环烷基乙酸（沃尔夫重排），意外的环烷基羧酸和双环酮（分子内CH键插入）。另一方面，Rh 2（OCOCF 3）4促进的反应提供了双环酮和烯酮二聚体。

  DOI：

  10.1016/s0040-4020(97)00507-3

文献信息

• Studies on hypolipidemic agents. II Synthesis of 1-arenesulfonyloxy-2-alkanone derivatives as potent esterase inhibitors and hypolipidemic agents.
  作者：KAZUO OGAWA、TADAFUMI TERADA、YOSHIYUKI MURANAKA、TOSHIHIRO HAMAKAWA、SADAO HASHIMOTO、SETSURO FUJII

  DOI：10.1248/cpb.34.3252

  日期：——

  Many 2-oxoalkyl arenesulfonate derivatives having straight or branched alkyl chains of different lengths, 2-oxoalkyl bis-arenesulfonate derivatives, and alkyl arenesulfonate derivatives having a ketal moiety at the 2-position on the alkyl chain were synthesized, and their esterase-inhibitory activities, as well as hypolipidemic activities, were evaluated.Among these compounds, 1-(2, 4, 6-trimethylbenzenesulfonyloxy)-2-dodecanone (III-1u), and 1-(2, 3, 4, 6-tetramethylbenzenesulfonyloxy)-2-hexanone (III-1w), -2-octanone (III-1x) and -2-decanone (III-1y) exhibited potent esterase-inhibitory activities (IC50=3×10-10, 2×10-10, 2×10<-10> and 3×<-11>M, respectively). However, the sulfonate (XV) having a ketal moiety on the alkyl chain and the bis-sulfonate (XVI) exhibited low inhibitory activities toward esterase in comparison with III and XII. Most of the compounds III and some of the compounds XII exhibited potent hypolipidemic activities corresponding to more than 50% lipid-lowering effect (plasma triglyceride and cholesterol ester) in vivo. The structure-activity relatioinships of these compounds are discussed.

  合成了许多具有直链或支链不同长度烷基链的2-氧代烷基芳磺酸盐衍生物、2-氧代烷基双芳磺酸盐衍生物以及在烷基链的2-位具有缩酮部分的烷基芳磺酸盐衍生物，并评估了它们的酯酶抑制活性及降血脂活性。在这些化合物中，1-(2,4,6-三甲基苯磺酰氧基)-2-十二烷酮（III-1u）、1-(2,3,4,6-四甲基苯磺酰氧基)-2-己烷酮（III-1w）、-2-辛烷酮（III-1x）和-2-癸烷酮（III-1y）表现出强效的酯酶抑制活性（IC50分别为3×10-10、2×10-10、2×10-10和3×10-11M）。然而，相对于III和XII，具有烷基链上缩酮部分的磺酸盐（XV）和双磺酸盐（XVI）对酯酶的抑制活性较低。大多数化合物III和部分化合物XII表现出强效的降血脂活性，对应于体内超过50%的脂质降低效果（血浆甘油三酯和胆固醇酯）。讨论了这些化合物的构效关系。
• Ternary Catalysis Enabled Three-Component Asymmetric Allylic Alkylation as a Concise Track to Chiral α,α-Disubstituted Ketones
  作者：Zhenghui Kang、Wenju Chang、Xue Tian、Xiang Fu、Wenxuan Zhao、Xinfang Xu、Yong Liang、Wenhao Hu

  DOI：10.1021/jacs.1c09148

  日期：2021.12.15

  unknown. Herein, a three-component asymmetric allylation of α-diazo carbonyl compounds with alcohols and allyl carbonates is disclosed by employing a ternary cooperative catalysis of achiral Pd-complex, Rh2(OAc)4, and chiral phosphoric acid CPA. This method represents the first example of three-component asymmetric allylic alkylation through an SN1-type trapping process, which involves a convergent assembly

  涉及通过 Aldol、Mannich 和 Michael 加成拦截鎓叶立德与相应的台式受体的多组分反应已证明在合成化学中具有广泛的应用。然而，由于这些原位生成的中间体的高反应性和瞬时存活，取代型拦截过程，尤其是不对称催化形式，至今仍是未知的。在此，通过采用非手性 Pd 络合物 Rh 2 (OAc) 4的三元协同催化，公开了 α-重氮羰基化合物与醇和碳酸烯丙酯的三组分不对称烯丙基化反应。, 和手性磷酸 CPA。该方法代表了通过 S N 1 型捕获过程的三组分不对称烯丙基烷基化的第一个示例，该过程涉及两种活性中间体 Pd-烯丙基物质和源自鎓叶立德的烯醇的聚合组装，提供了快速获得手性 α,α-二取代酮，产率好至高，对映选择性高至优异。结合实验和计算研究揭示了这种新型三组分反应的机制，包括 Xantphos 配体的关键作用和对映选择性的起源。
• Deux types de participation ? lors de l'hydrolyse des diazoc�tones ?, ?-insatur�es par des acides aqueux et des superacides. L'ion oxo-5-norbornyle-2
  作者：Roger Malherbe、Hans Dahn

  DOI：10.1002/hlca.19740570822

  日期：——

  γ, δ-Unsaturated diazoketones undergo acid catalysed hydrolysis accompanied by cyclisation; the latter is favoured by suitable geometry (cyclopentenes) and by substitution by methyl groups. If both are present, rate enhancement by anchimeric assistance has been observed. Hydrolysis of 4-diazoacetyl-cyclopentene (1) yields a product mixture similar to that formed during solvolysis of 5-oxo-norbornyl-2-endo

  γ，δ-不饱和重氮酮经酸催化水解并环化; 后者因合适的几何形状（环戊烯）和被甲基取代而受到青睐。如果两者均存在，则已观察到通过嵌合辅助的速率增加。4-重氮乙酰基-环戊烯（1）的水解产生类似于5-氧代-降冰片基-2-内溴代磺酸盐（23）的溶剂化期间形成的产物混合物，并且与外型异构体的产物混合物完全不同。用常见的中间体5-氧代-2-降冰片基碳鎓离子解释了结果。溶剂参与过渡态，即部分S N2字符，是由活化的熵，并通过一个附加的亲核试剂（BR的动作隐含- ）。在超强酸中，发生不同类型的环化反应，涉及羰基氧和质子化的CC双键并形成四氢吡喃衍生物。
• Studies on the Chemistry and Reactivity of α-Substituted Ketones in Isonitrile-Based Multicomponent Reactions
  作者：Lijun Fan、Ashley M. Adams、Jason G. Polisar、Bruce Ganem

  DOI：10.1021/jo8019708

  日期：2008.12.19

  Using the Passerini and Ugi reactions as representative tests, the utility of several alpha-substituted ketones R-CO-CH(2)-X (X = sulfonyloxy, acyloxy, azido, halo, hydroxy, and sulfonyl) in isonitrile-based multicomponent reactions was explored. In a relative rate study (R = PhCH(2)CH(2)), each of the alpha-substituted ketones underwent Passerini condensation more rapidly than the parent ketone. Short

  使用Passerini和Ugi反应作为代表性测试，在基于异腈的多组分反应中使用几种α-取代的酮R-CO-CH（2）-X（X =磺酰氧基，酰氧基，叠氮基，卤素，羟基和磺酰基）被探索了。在相对速率研究中（R = PhCH（2）CH（2）），每个α-取代的酮比亲代酮经历Passerini缩合的速度更快。开发了短而高度收敛的恶唑啉，β-内酰胺，二-O-酰基甘油酰胺和其他分子框架的途径。
• α-Xanthylmethyl Ketones from α-Diazo ketones
  作者：Luis D. Miranda、Pedro López-Mendoza

  DOI：10.1055/a-1513-9968

  日期：2021.10

  A simple and efficient method to obtain α-xanthylmethyl ketones from α-diazo ketones is described. The reaction proceeds through a protonation/nucleophilic substitution sequence in the presence of p-toluenesulfonic acid and potassium ethyl xanthogenate as the nucleophile. As α-diazo ketones can be readily synthesized from ubiquitous carboxylic acids, a broad variety of xanthates can be obtained, including

  描述了一种从 α-重氮酮获得 α-黄嘌呤甲基酮的简单有效的方法。在对甲苯磺酸和乙基黄原酸钾作为亲核试剂的存在下，反应通过质子化/亲核取代序列进行。由于 α-重氮酮可以很容易地从无处不在的羧酸合成，因此可以获得各种各样的黄原酸酯，包括来自天然底物的例子。