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2-ethoxy-5-methyl-3,4-dihydro-2H-pyran | 2397-94-6

中文名称
——
中文别名
——
英文名称
2-ethoxy-5-methyl-3,4-dihydro-2H-pyran
英文别名
2-ethoxy-5-methyl-3,4-dihydro-2H-pyran;2-Aethoxy-5-methyl-3,4-dihydro-2H-pyran
2-ethoxy-5-methyl-3,4-dihydro-2H-pyran化学式
CAS
2397-94-6
化学式
C8H14O2
mdl
——
分子量
142.198
InChiKey
MRNFIMQXVANEFK-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

计算性质

  • 辛醇/水分配系数(LogP):
    1.5
  • 重原子数:
    10
  • 可旋转键数:
    2
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.75
  • 拓扑面积:
    18.5
  • 氢给体数:
    0
  • 氢受体数:
    2

安全信息

  • 海关编码:
    2932999099

SDS

SDS:3d934a76c6264ef1869885315464a803
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反应信息

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文献信息

  • Oxidative rearrangement of 2-alkoxy-3,4-dihydro-2H-pyrans: stereocontrolled synthesis of 4,5-cis-disubstituted tetrahydrofuranones including whisky and cognac lactones and crobarbatic acid
    作者:Alan Armstrong、Cassim Ashraff、Hunsuk Chung、Lorraine Murtagh
    DOI:10.1016/j.tet.2009.04.013
    日期:2009.6
    Oxidation of 2-alkoxy-3,4-dihydro-2H-pyrans 3 with dimethyldioxirane or MTO/urea–H2O2 followed by Jones oxidation leads to rearrangement and stereocontrolled formation of 4,5-cis-disubstituted tetrahydrofuranones. The method is applied to the synthesis of the whisky lactone 9, cognac lactone 10 and crobarbatic acid 17.
    用二甲基二环氧乙烷或MTO /脲-H 2 O 2氧化2-烷氧基-3,4-二氢-2 H-吡喃3,然后进行琼斯氧化,导致4,5-顺式-二取代的四氢呋喃酮的重排和立体形成。该方法适用于威士忌内酯9,白兰地内酯10和巴巴果酸17的合成。
  • Characterization of Aroma-Active Compounds in Italian Tomatoes with Emphasis on New Odorants
    作者:Johanna Kreissl、Peter Schieberle
    DOI:10.1021/acs.jafc.7b01108
    日期:2017.6.28
    5-dimethyl-3(2H)-furanone. Of the further odorants, 13 compounds have previously not been reported as tomato odorants. Although most of these showed lower FD-factors, in particular, the coconut/dill-like smelling wine lactone ((3S,3aS,7aR)-3a,4,5,7a-tetrahydro-3,6-dimethylbenzofuran-2(3H)-one) appeared with a quite high FD factor. In addition, a fruity, almond-like odorant (6) with an FD factor of 1024 was
    通过溶剂萃取和随后的SAFE蒸馏,从意大利葡萄番茄中制得香气馏出物,产生强烈的总体香气。gc /嗅觉测定法和香气提取物稀释分析的应用揭示了44种气味活性化合物,其中42种可以被识别。对绿色,草绿色(Z)-3-己烯醛,金属味反式-4,5-环氧-(E)-2-癸烯,马铃薯样3-(甲硫基)确立了最高的气味活性值2048丙醛和焦糖状的4-羟基-2,5-二甲基-3(2 H)-呋喃酮。在其他增香剂中,以前没有13种化合物被报道为番茄增香剂。尽管其中大多数显示出较低的FD因子,尤其是椰子/莳萝味的葡萄酒内酯((3S,3a S,7a R)-3a,4,5,7a-四氢-3,6-二甲基苯并呋喃-2(3 H)-one)的FD系数很高。此外,还检测到FD系数为1024的果味杏仁状增香剂(6)。通过应用高分辨率质谱法和极性考虑因素,提出了甲基-2-乙氧基四氢吡喃异构体的结构用于6。合成了五个可能的异构体中的四个,即3-
  • Lanthanide catalysis of cycloadditions of heterodienes with enol ethers
    作者:Samuel Danishefsky、Mark Bednarski
    DOI:10.1016/s0040-4039(01)80009-5
    日期:1984.1
    The cycloadditions of enol ethers with α,β-unsaturated aldehydes is catalyzed by Yb(fod)3.
    Yb(fod)3催化烯醇醚与α,β-不饱和醛的环加成反应。
  • Azabicycloalkane derivatives, their preparation and medicaments containing them
    申请人:BEECHAM GROUP PLC
    公开号:EP0095262A1
    公开(公告)日:1983-11-30
    Compounds of formula (I), or a pharmaceutically acceptable salt thereof, or a solvent adduct or N-oxide thereof, or a solvate of any of the foregoing: wherein: n is 0 or 1; one of X and Y is CO and the other is NR9, R9 being hydrogen or as defined with R,; R, is C1-6 alkoxy, C1-6 alkylthio or, together with R9 when Y is NR9, C1-2 alkylene, and one of R2, R3 and R4 is hydrogen and the other two together are C1-2 alkylenedioxy; or the other two are the same or different and are selected from hydrogen, halogen, trifluoromethyl, C1-6 alkyl, C1-6 alkoxy, C1-6 alkylthio, carboxylic C1-7 acyl, carboxylic C1-7 acylamino, C1-6 alkylsulphonyl, C1-6 alkylsulphinyl, hydroxy, nitro. C1-6 alkylsulphonylamino or N-C1-6, alkylsulphonyl-N- C1-6 alkaylamino, or amino, aminocarbonyl, aminosulphonyl, aminosulphonylamino or N-(aminosufphonyl)-N-C1-8 alkylamino, optionally N-substituted by one or two C1-6 alkyl, C3-8 cycloalkyl, C3-8 cycloalkyl C1-4alkyl, phenyl or phen C1-4alkyl groups, any of which phenyl moieties may be substituted by one or more halogen, trifluoromethyl, C1-6 alkoxy or nitro groups, or optionally N-dissubstituted by C4-5 polymethylene, or R, and R2 together are C1-2 alkylenedioxy, C1-2 oxyalkylenethio, C2-3 alkyleneoxy or N-(C1-2 oxyalkylene)-N-C1-6 alkylamino; and R3 and R4 together are C1-2alkylenedioxy or R3 or R4 are same or different and are selected from the previously defined class of substituents; R5 is C1-7 alkyl, -(CH2)sR10, s being 0 to 2 and R,o being C3-8 cycloalkyl, -(CH2)2R11, t being 1 or 2 and R11 being thienyl or phenyl optionally substituted by one or two substituents selected from C1-4 alkoxy, trifluoromethyl. halogen, nitro, carboxy, esterfied carboxy and C1-4 alkyl optionally substituted by hydroxy, C1-4 alkoxy, carboxy, esterified carboxy or in vivo hydrolysable acyloxy; and one of R6 and R7 when n=0 is C1-4 alkoxy, C1-4 alkoxycarbonyl, hydroxy or C1-4alkyl optionally substituted by hydroxy, C1-4 alkoxy or C1-4acyloxy, and the other is hydrogen or C1-4 alkyl or one of R8, R7 and Re when n=1 is C1-4alkyl and the other two are the same on different and are hydrogen or C1-4alkyl, process for their preparation and compositions containing them.
    式(I)化合物,或其药学上可接受的盐,或其溶剂加成物或 N-氧化物,或上述任一物质的溶液: 其中: n 为 0 或 1; X 和 Y 中的一个是 CO,另一个是 NR9,R9 是氢或如 R, 所定义; R,是 C1-6 烷氧基、C1-6烷硫基或当 Y 是 NR9 时与 R9 一起是 C1-2 亚烷基,且 R2、R3 和 R4 中的一个是氢,另外两个一起是 C1-2 亚烷基二氧基;或另外两个相同或不同且选自氢、卤素、三氟甲基、C1-6 烷基、C1-6 烷氧基、C1-6 烷硫基、羧基 C1-7 丙烯酸基、羧基 C1-7 丙烯酸氨基、C1-6 烷基磺酰基、C1-6 烷基亚磺酰基、羟基、硝基。C1-6烷基磺酰基氨基或N-C1-6、烷基磺酰基-N-C1-6烷基氨基,或氨基、氨基羰基、氨基磺酰基、氨基磺酰基氨基或N-(氨基磺酰基)-N-C1-8烷基氨基,可选择被一个或两个C1-6烷基、C3-8环烷基、C3-8环烷基C1-4烷基、苯基或苯基C1-4烷基基团N-取代、其中任一苯基可被一个或多个卤素、三氟甲基、C1-6 烷氧基或硝基取代,或任选被 C4-5 聚亚甲基 N-取代,或 R 和 R2 合在一起为 C1-2 烯二氧基、C1-2 氧代烯硫基、C2-3 亚烷氧基或 N-(C1-2 氧代亚烷基)-N-C1-6 烷基氨基;R3 和 R4 同为 C1-2 烯二氧基,或 R3 或 R4 相同或不同,且选自前面定义的取代基类别; R5 是 C1-7 烷基,-(CH2)sR10,s 是 0 至 2,R,o 是 C3-8 环烷基,-(CH2)2R11,t 是 1 或 2,R11 是噻吩基或苯基,可任选被一个或两个取代基取代,这些取代基选自 C1-4 烷氧基、三氟甲基、卤素、硝基、羧基、酯化羧基和可任选被羟基、C1-4 烷氧基、羧基、酯化羧基或体内可水解酰氧基取代的 C1-4 烷基;和 当 n=0 时,R6 和 R7 中的一个是 C1-4 烷氧基、C1-4 烷氧羰基、羟基或任选被羟基、C1-4 烷氧基或 C1-4 乙酰氧基取代的 C1-4 烷基,另一个是氢或 C1-4 烷基;或当 n=1 时,R8、R7 和 Re 中的一个是 C1-4 烷基,另两个相同或不同,并且是氢或 C1-4 烷基。
  • The 1,4-Addition of Vinyl Ethers to α,β-Unsaturated Carbonyl Compounds
    作者:Raymond I. Longley、William S. Emerson
    DOI:10.1021/ja01163a076
    日期:1950.7
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表征谱图

  • 氢谱
    1HNMR
  • 质谱
    MS
  • 碳谱
    13CNMR
  • 红外
    IR
  • 拉曼
    Raman
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cnmr
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  • 峰位数据
  • 峰位匹配
  • 表征信息
Shift(ppm)
Intensity
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Assign
Shift(ppm)
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测试频率
样品用量
溶剂
溶剂用量
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