2,2-二甲基-苯并二氢吡喃-4-酮 | 3780-33-4

• 物质功能分类: 医药中间体 - 杂环化合物 - 吡喃类化合物
• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 中文名称: 2,2-二甲基-苯并二氢吡喃-4-酮
• 中文别名: 2,2-二甲基色满-4-酮
• 英文名称: 2,3-dihydro-2,2-dimethylbenzo[b]pyran-4-one
• 英文别名: 2,2-Dimethyl-4-chromanone；2,2-dimethyl-chroman-4-one；2,2-dimethyl-3H-chromen-4-one
• CAS: 3780-33-4
• 化学式: C₁₁H₁₂O₂
• mdl: MFCD07369943
• 分子量: 176.215
• InChiKey: DUTNTKTZIQAPGA-UHFFFAOYSA-N

物化性质

• 熔点：
  67-75 °C
• 沸点：
  273.2±20.0 °C(Predicted)
• 密度：
  1.086±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.363
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 安全说明：
  S26,S36/37/39
• 危险类别码：
  R36/37/38
• 海关编码：
  2932999099
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335
• 储存条件：
  室温

反应信息

• 作为反应物：
  描述：

  2,2-二甲基-苯并二氢吡喃-4-酮 在 吗啉 、 氯化亚砜 作用下， 以 四氯化碳 、 乙醚 为溶剂， 生成 2,2,5',5''-tetramethylspiro<1,3,4>oxadithiin>-4-one
  参考文献：
  名称：

  Cycloadditions with 2,2-Dialkyl-3-thioxochroman-4-one S-Sulfides Including an Unprecedented [3 + 5] Cycloaddition

  摘要：

  We report the facile generation of the chroman-4-one-derived thiosulfines 10 under mild conditions by our well-established nucleophilic "unzipping" of the corresponding acetyl alpha-chloroalkyl disulfides 9 which in turn can be prepared from the corresponding alpha-chloro sulfenyl chlorides 8. Spontaneous partial loss of sulfur from 10, most probably by the disproportionation of 10 to 11 and 12, generates the expectedly reactive beta-oxo thioketones 11 which partly dimerize in a precedented Diels-Alder fashion, to give the 1,3,4-oxadithiins 13, and partly cycloadd to 10 to form the 1,2,4-trithiolanes 14 in a well-precedented fashion. Dimerization of 10 can occur in two competing ways: the precedented nonconcerted [3 + 3] cycloaddition (to give 1,2,4,5-tetrathianes 15) and the unprecedented concerted [3 + 5] addition to give 1,3,4,5,6-oxatetrathiocins 16. In the latter interaction one molecule of 10 behaves as a 1,5-dipole and a second molecule as a 1,3-dipole. In one case (10d) extensive sulfur scrambling takes place with formation of the 1,2,3,4,5,6-hexathiepane 17d. It is remarkable how sensitive the reactions of 10 are to minor variations of the simple alkyl substituents in the 2-position. In addition to the usual spectroscopic characterization all isolated key compounds were subjected to X-ray single-crystal structure determinations.

  DOI：

  10.1021/jo981534+
• 作为产物：
  描述：

  2-溴-3-甲基丁酰溴 在 pyridine-base 、 zinc(II) chloride 作用下， 生成 2,2-二甲基-苯并二氢吡喃-4-酮
  参考文献：
  名称：

  Skraup; Beng, Chemische Berichte, 1927, vol. 60, p. 946

  摘要：

  DOI：

文献信息

• Organocatalyzed Kabbe condensation reaction for mild and expeditious synthesis of 2,2‐dialkyl and 2‐spiro‐4‐chromanones
  作者：Naval P. Kapuriya、Jasmin J. Bhalodia、Mrunal A. Ambasana、Rashmi B. Patel、Atul H. Bapodra

  DOI：10.1002/jhet.4054

  日期：——

  An expeditious Kabbe condensation reaction for the synthesis of 2,2‐dialkyl and 2‐spiro‐chroman‐4(1H)‐ones has been developed using pyrrolidine‐butanoic acid in DMSO as bifunctional organocatalyst. Unlike existing methods, this reaction proceeds at room temperature with high yields, rendering it an attractive method to synthesize a vast variety of privileged 4‐chromones.

  使用吡咯烷-丁酸在DMSO中作为双功能有机催化剂，已经开发了一种快速的Kabbe缩合反应，用于合成2,2-二烷基和2-spiro-chroman-4（1 H）-酮。与现有方法不同，该反应在室温下以高收率进行，这使其成为合成各种特有的4-色酮的有吸引力的方法。
• Benzopyran derivatives and pharmaceutical compositions containing them
  申请人：Rhone-Poulenc Sante

  公开号：US04977166A1

  公开（公告）日：1990-12-11

  New benzopyran derivatives of formula: ##STR1## in which R.sub.1 is hydrogen, halogen, hydroxy, alkoxy, nitro, amino, alkylsulphonamido, bis(alkylsulphonyl) amino or acylamino, X is nitrogen or a >CH-radical R is a radical of formula: ##STR2## in which A denotes a single bond or methylene or, when X is nitrogen, A may denote carbonyl, and R.sub.2 and R.sub.3, which are identical or different, are hydrogen, halogen, hydroxy, alkyl, alkoxy, nitro, amino, alkylsulphonamido, bis(alkylsulphonyl)amino, acylamino, sulphamoyl or cyano, or, when they are adjacent, together form a methylenedioxy or ethylenedioxy radical, or else R is pyridyl or 2(2H)-benzimidazolonyl if X denotes >CH--, and R' and R" are identical and are hydrogen or alkyl, their isomeric forms and mixtures thereof, and their acid addition salts, can be used as antiarrhythmic and antifibrillation agents.

  新的苯并吡喃衍生物的化学式为：##STR1## 其中 R.sub.1 是氢、卤素、羟基、烷氧基、硝基、氨基、烷基磺酰胺基、双(烷基磺酰基)氨基或酰胺基，X 是氮或一个 >CH-基团，R 是一个化学式的基团：##STR2## 其中 A 表示一个单键或亚甲基，或者当 X 是氮时，A 可表示羰基，R.sub.2 和 R.sub.3，它们相同或不同，是氢、卤素、羟基、烷基、烷氧基、硝基、氨基、烷基磺酰胺基、双(烷基磺酰基)氨基、酰胺基、磺酰胺基或氰基，或者当它们相邻时，一起形成一个亚甲二氧基或乙烯二氧基基团，或者 R 是吡啶基或 2(2H)-苯并咪唑基，如果 X 表示 >CH--，而 R' 和 R" 相同且是氢或烷基，它们的异构体形式和混合物，以及它们的酸盐加合物，可用作抗心律失常和抗纤颤剂。
• [EN] MACROCYCLIC BROAD SPECTRUM ANTIBIOTICS<br/>[FR] ANTIBIOTIQUES MACROCYCLIQUES À LARGE SPECTRE
  申请人：RQX PHARMACEUTICALS INC

  公开号：WO2018149419A1

  公开（公告）日：2018-08-23

  Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of bacterial type 1 signal peptidase (SpsB), an essential protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.

  本文提供了抗菌化合物，其中在某些实施例中，这些化合物具有广谱生物活性。在各种实施例中，这些化合物通过抑制细菌类型1信号肽酶（SpsB）发挥作用，这是细菌中的一种必需蛋白质。还提供了使用所述化合物的药物组合物和治疗方法。
• Catalytic C–C coupling of diazo compounds with arylboronic acids: using surface modified sewage sludge as catalyst
  作者：Zhipeng Zhang、Yang Yu、Yuxing Xie、Timothy Hughes、Jun Xu、Fei Huang、He Huang

  DOI：10.1039/d0gc00317d

  日期：——

  carbonaceous materials (SW) by perchloric acid catalyzed coupling reactions between diazo compounds and arylboronic acids was developed. The reaction shows a high level of functional tolerance and a broad substrate scope. Furthermore, the highly selective 1,2-alkyl shift products were furnished through the sterically demanding R4, R5 migration of diazo compounds (3-diazochromanone). The structures of 1,2-shift

  通过高氯酸催化重氮化合物与芳基硼酸之间的偶联反应，开发了一种绿色，温和且高效的合成方法，该方法利用污水污泥衍生的碳质材料（SW）合成二芳基次甲基。该反应显示出高水平的功能耐受性和广泛的底物范围。此外，通过空间要求高的R 4，R 5提供了高选择性的1,2-烷基转移产物重氮化合物（3-重氮苯并二氢吡喃酮）的迁移。通过单晶X射线分析进一步证实了1，2-移位产物的结构。值得注意的是，darifenacin（一种用于膀胱过度活动症的临床药物，OAB）和diclofensine（一种显示出抗抑郁和单胺再摄取抑制剂活性的兴奋剂）的核心结构的合成进一步证明了该方法的有效性和合成潜力。
• l-Proline derived nitrogenous steroidal systems: an asymmetric approach to 14-azasteroids
  作者：Ritesh Singh、Gautam Panda

  DOI：10.1039/c3ra42272k

  日期：——

  intramolecular SN2′ cyclization reaction for the construction of critical C-ring in the nitrogen impregnated steroidal architectures bearing unsaturation at Δ9(11) position. In the endeavour to synthesize some new congeners, the remote electronic impact of the electron donating groups in A ring and heteroatoms like oxygen in B ring, on the propensity of C-ring cyclization was also observed.

  已经描述了在温和的反应条件下使用L-脯氨酸来访问14-氮杂类固醇的有效手性池方法。关键步骤涉及分子内的S N 2'环化反应，以在含氮的甾族结构中在Δ9 （11）位置携带不饱和键，以构建关键的C环。为了合成一些新的同类物，还观察到了A环上给电子基团和B环上的氧等杂原子对C环环化倾向的远程电子影响。