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5-甲氧基-2-甲基-1,3-恶唑 | 53878-74-3

中文名称
5-甲氧基-2-甲基-1,3-恶唑
中文别名
——
英文名称
2-methyl-5-methoxy-1,3-oxazole
英文别名
5-methoxy-2-methyl-1,3-oxazole;2-methyl-5-methoxyoxazole;5-methoxy-2-methyl-oxazole;2-Methyl-5-methoxyoxazol;Oxazole, 5-methoxy-2-methyl-
5-甲氧基-2-甲基-1,3-恶唑化学式
CAS
53878-74-3
化学式
C5H7NO2
mdl
——
分子量
113.116
InChiKey
RNQHZLJNVUGTIL-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
  • 重原子数:
    8
  • 可旋转键数:
    1
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.4
  • 拓扑面积:
    35.3
  • 氢给体数:
    0
  • 氢受体数:
    3

SDS

SDS:3f6ce4c3f5d733ed1a8af8e2f5fbee72
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反应信息

  • 作为反应物:
    描述:
    5-甲氧基-2-甲基-1,3-恶唑盐酸 作用下, 以 二氯甲烷 为溶剂, 反应 24.0h, 生成 methyl (2RS,3RS) 2-(acetylamino)-3-hydroxy-4-methylpentanoate
    参考文献:
    名称:
    5-甲氧基恶唑的光醛醇反应:α-氨基β-羟基羧酸衍生物的高度区域选择性和非对映选择性合成
    摘要:
    描述了具有叔(来自相应的甘氨酸等价物)或季 α-碳中心的 α-氨基 β-羟基羧酸衍生物的通用途径。关键反应是电子激发的羰基化合物(分别为芳香醛和脂肪醛)与恶唑的环加成反应。为了使产物水解更不稳定,在 C-5 位引入了甲氧基取代基,导致形成具有原酸酯亚结构的环加合物。光环加成,无论是三线态激发(芳香族)羰基化合物还是单线态激发(脂肪族)羰基化合物,都导致形成具有中等至极高外选择性的内型和外型非对映异构体的混合物。4-未取代的5-甲氧基恶唑1(甘氨酸等价物)以高产率和优异的非对映选择性得到[2+2]-加合物3a-β3f与醛2a-β2f。这些化合物的水解产生具有优选赤型 (S*,S*) 构型的 α-氨基 β-羟基酯 4a??4f...
    DOI:
    10.1139/v03-029
  • 作为产物:
    描述:
    (乙酰氨基)乙酸甲酯三氯氧磷 作用下, 反应 4.0h, 以73%的产率得到5-甲氧基-2-甲基-1,3-恶唑
    参考文献:
    名称:
    Singh; Singh, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2000, vol. 39, # 9, p. 688 - 693
    摘要:
    DOI:
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文献信息

  • 4-Oxazoline route to stabilized azomethine ylides. Controlled reduction of oxazolium salts
    作者:E. Vedejs、J. W. Grissom
    DOI:10.1021/ja00218a038
    日期:1988.5
    Etude, en particulier de l'effet des substituants de l'oxazole de depart sur les produits obtenus
    练习曲, en particulier de l'effet des substituants de l'oxazole de leave sur les produits obtenus
  • Photocycloaddition of 5-Methoxyoxazoles to Aldehydes and ?-Keto Esters: A Comprehensive View on Stereoselectivity, Triplet Biradical Conformations, and Synthetic Applications of Paternò–Büchi Adducts
    作者:Axel G. Griesbeck、Samir Bondock
    DOI:10.1071/ch08168
    日期:——

    The photocycloaddition of carbonyl compounds (aldehydes and keto esters, respectively) with 5-methoxyoxazoles bearing substituents at C2 and C4 is described with respect to regio- and diastereoselectivity. In all cases the reactions proceed with excellent regioselectivity and with high to moderate (exo) diastereoselectivity independent of the nature of the excited carbonyl compound. The products can be easily ring-opened to give α-amino, β-hydroxy carboxylic acid derivatives.

    本研究介绍了羰基化合物(分别是醛和酮酯)与 C2 和 C4 上带有取代基的 5-甲氧基噁唑的光环加成反应的区域选择性和非对映选择性。在所有情况下,反应都具有极佳的区域选择性和高至中等的(外)非对映选择性,与激发的羰基化合物的性质无关。产物很容易开环,生成 α-基、β-羟基羧酸生物
  • Facile synthesis of spiroisoquinolines based on photocycloaddition of isoquinoline-1,3,4-trione with oxazoles
    作者:Chengmei Huang、Haitao Yu、Zhengrui Miao、Jie Zhou、Shuai Wang、Hoong-Kun Fun、Jianhua Xu、Yan Zhang
    DOI:10.1039/c1ob05143a
    日期:——
    Photocycloaddition of isoquinoline-1,3,4-trione and 5-methoxyoxazoles affords spiroisoquinolineoxetanes with high regio- and diastereoselectivity. The spiroisoquinolineoxetanes can be conveniently converted into novel spiroisoquinolineoxazoline derivatives through acid catalyzed sequential reactions.
    异喹啉-1,3,4-三酮和 5-甲氧基恶唑的光环加成反应可生成具有高区域和非对映选择性的螺异喹啉氧杂环丁烷。通过酸催化的连续反应,螺双喹啉氧杂环丁烷可以方便地转化为新型螺双喹啉恶唑啉衍生物
  • Reaction of thioaldehydes with 5-alkoxyoxazoles. A route to 3-thiazolines
    作者:E. Vedejs、S. Fields
    DOI:10.1021/jo00255a004
    日期:1988.9
  • Synthesis of <i>e</i><i>rythro</i>-α-Amino β-hydroxy Carboxylic Acid Esters by Diastereoselective Photocycloaddition of 5-Methoxyoxazoles with Aldehydes
    作者:Axel G. Griesbeck、Samir Bondock、Johann Lex
    DOI:10.1021/jo034830h
    日期:2003.12.1
    A new photoaldol route to alpha-amino-beta-hydroxy carboxylic acid esters is initiated by the photocycloaddition of aromatic or aliphatic aldehydes to 5-methoxyoxazoles. The 4-unsubstituted 5-methyloxazole 1 gave the cycloadducts 8a-f in high yields and excellent exo-diastereoselectivities. Hydrolysis of 8a-f gives the N-acetyl alpha-amino-beta-hydroxy esters 9a-f, which could be subsequently converted into the corresponding Z-didehydro alpha-amino acids 10a-f. Quartenary alpha-amino-beta-hydroxy esters 12, 14, 16, 18, and 20, which are stable against dehydration, were obtained from the 4-alkylated 5-methoxyoxazoles 2-6, in most cases highly erythro-selective due to the high degree of stereocontrol (exo) at the photocycloaddition (to give 11, 13, 15, 17, and 19) level. The relative configurations of the N-acetyl alpha-amino-beta-hydroxy esters were determined by NMR spectroscopy and comparison with chiral pool-derived compounds as well as by X-ray structure determination of the ester 23, formed by hydrolysis of the cycloadduct 22, derived from photocycloaddition of propionaldehyde to the isoleucine-derived oxazole 21.
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