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rac-(3aR,6aR)-3-methylenehexahydro-2H-cyclopenta[b]furan-2-one | 61747-55-5

中文名称
——
中文别名
——
英文名称
rac-(3aR,6aR)-3-methylenehexahydro-2H-cyclopenta[b]furan-2-one
英文别名
cis-4-methylene-2-oxa-bicyclo(3.3.0)octan-3-one;(3aR,6aR)-3-methylidene-4,5,6,6a-tetrahydro-3aH-cyclopenta[b]furan-2-one
rac-(3aR,6aR)-3-methylenehexahydro-2H-cyclopenta[b]furan-2-one化学式
CAS
61747-55-5
化学式
C8H10O2
mdl
——
分子量
138.166
InChiKey
SKFKGXHJSIHVLN-RNFRBKRXSA-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:
    95 °C(Press: 0.08 Torr)
  • 密度:
    1.12±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    1.5
  • 重原子数:
    10
  • 可旋转键数:
    0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.62
  • 拓扑面积:
    26.3
  • 氢给体数:
    0
  • 氢受体数:
    2

SDS

SDS:cc1073d40dc1f86dae78a237c306ec17
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反应信息

  • 作为反应物:
    描述:
    rac-(3aR,6aR)-3-methylenehexahydro-2H-cyclopenta[b]furan-2-one 在 三(三苯基膦)羰基氢化铑 作用下, 以 1,4-二氧六环 为溶剂, 反应 1.5h, 生成 4-methyl-2-oxabicyclo<3.3.0>oct-4-en-3-one
    参考文献:
    名称:
    Palladium-catalyzed cyclocarbonylation of acetylenic alcohols to methylene lactones. Scope and synthesis of appropriate substrates
    摘要:
    DOI:
    10.1021/ja00415a020
  • 作为产物:
    描述:
    3-(1,2-Propadienyloxy)cyclopentene 在 N-溴代丁二酰亚胺(NBS) 、 jones reagent 、 偶氮二异丁腈三正丁基氢锡 作用下, 以 丙酮 为溶剂, 反应 5.0h, 生成 rac-(3aR,6aR)-3-methylenehexahydro-2H-cyclopenta[b]furan-2-one
    参考文献:
    名称:
    Allenyl ethers as precursors of .alpha.-methylene-.gamma.-butyrolactones and botryodiplodin derivatives
    摘要:
    Beta-Bromopropargyl ethers 2a-h, 11, and 12 or allyl propargyl ethers 8d-h are easily isomerized with potassium tert-butoxide (KO-t-Bu) into the corresponding allenyl derivatives 3a-h, 13, 14, and 9d-h. These compounds afford alpha-methylene-gamma-butyrolactones 7a-h, 25, and 26 by application of the sequence halogenation/dehydrohalogenation/homolytic carbocyclization. Starting from methyl vinyl ketone 1i, similar transformations lead to botryodiplodin (27) or ethoxybotryodiplodin (28).
    DOI:
    10.1021/jo00073a033
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文献信息

  • Synthesis of bicyclic γ-butyrolactone derivatives by rhodium catalyzed intramolecular C–H insertion of α-dizao α-phosphoryl cycloalkyl esters
    作者:Jr-Yun Shie、Jia-Liang Zhu
    DOI:10.1016/j.tet.2016.02.008
    日期:2016.3
    products can be further elaborated into α,α-dialkyl γ-butyrolactones via a two-step alkylation/reductive alkylation sequence with the controlled installation of two alkyl groups to the lactones. In addition, application of Horner–Wadsworth–Emmons (HWE) olefination reaction to the insertion products allows an access to bicyclic α-alkylidene-γ-butyrolactone ring systems that occur ubiquitously in biologically
    在Rh 2(OAc)4的催化下,几种容易制备的环烷基α-重氮α-磷酸酯经过分子内C–H插入反应,以不同的收率(10%–80%)和dr比率(69:14: 17至> 99:1)。实验结果表明,前体的反应性和环化的非对映选择性都受环烷基部分的环大小的影响。而且,大多数得到的产物可以通过两步烷基化/还原烷基化序列在受控地将两个烷基安装到内酯上而进一步加工成α,α-二烷基γ-丁内酯。此外,
  • A facile synthesis of bicyclic α-methylene-γ-lactones by intramolecular cyclization of allylsilylated aldehydes
    作者:Kiyoshi Nishitani、Koji Yamakawa
    DOI:10.1016/s0040-4039(00)95805-2
    日期:1987.1
    Bicyclic α-methylene-γ-lactones were synthesized employing intramolecular reaction of an aldehyde unit with a β-ethoxycarbonylallylsilane function by the action of TiCl4 in an excellent yield.
    通过在TiCl 4的作用下醛单元具有β-乙氧基羰基烯丙基硅烷官能团的分子内反应,以优异的产率合成了双环α-亚甲基-γ-内酯。
  • The Isoxazoline Route to α-Methylen Lactones.
    作者:Alan P. Kozikowski、Arun K. Ghosh
    DOI:10.1016/s0040-4039(00)87961-7
    日期:1983.1
    A new route to α-methylene lactones, important structural subunits of many natural products, has been developed using the nitrile oxide derived from 2-nitroethanol.
    利用衍生自2-硝基乙醇的一氧化氮,已经开发出一种新的途径来生产α-亚甲基内酯,这是许多天然产物的重要结构亚基。
  • Organoboranes Mediated RadicalCyclizations
    作者:Philippe Renaud、Barbara Becattini、Cyril Ollivier
    DOI:10.1055/s-2003-40835
    日期:——
    Hydroboration of dienes with catecholborane followed by radical cyclization using pyridine-2-thione-N-methoxycarbonyl­oxy (= PTOC-OMe, a Barton carbonate) as chain transfer reagent is reported. A facile access to a bicyclic α-methylenelactone is described.
    报告中使用吡啶-2-硫酮-N-甲氧基碳酰氧基(=PTOC-OMe,一种碳酸巴顿酯)作为链转移试剂,对二烯烃与邻苯二酚硼烷进行氢硼化反应,然后进行自由基环化。介绍了一种简便的双环δ-亚甲基内酯的制备方法。
  • Iodovinylidene lactone synthesis. Free radical cyclisation of iodoacetylenic esters
    作者:Gerald Haaima、Rex T. Weavers
    DOI:10.1016/0040-4039(88)85342-5
    日期:1988.1
    Propiolic acids add to alkenes in the presence of N-iodosuccinimide to give iodo acetylenic esters. These, on treatment with dibenzoyl peroxide, undergo cyclisation to yield (E)-iodovinylidene butyrolactones. Subsequent alkylation with lithium dimethylcuprate occurs by replacement of the iodine.
    在N-碘代琥珀酰亚胺的存在下,丙酸加成到烯烃中,得到碘炔基酯。在用过氧化二苯甲酰处理后,将它们环化以产生(E)-碘亚乙烯基丁内酯。随后通过碘取代而与二甲基二甲基碳酸锂进行烷基化。
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