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(2,4-dimethyl-pyrimidin-5-yl)-carbamic acid methyl ester | 98594-50-4

中文名称
——
中文别名
——
英文名称
(2,4-dimethyl-pyrimidin-5-yl)-carbamic acid methyl ester
英文别名
(2,4-Dimethyl-pyrimidin-5-yl)-carbamidsaeure-methylester;methyl N-(2,4-dimethylpyrimidin-5-yl)carbamate
(2,4-dimethyl-pyrimidin-5-yl)-carbamic acid methyl ester化学式
CAS
98594-50-4
化学式
C8H11N3O2
mdl
——
分子量
181.194
InChiKey
LTDLALAFOZTBHG-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):
    0.6
  • 重原子数:
    13
  • 可旋转键数:
    2
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.38
  • 拓扑面积:
    64.1
  • 氢给体数:
    1
  • 氢受体数:
    4

反应信息

点击查看最新优质反应信息

文献信息

  • 2, 4-dimethyl-5-sulfanilamidopyrimidine
    申请人:HOFFMANN LA ROCHE
    公开号:US02890218A1
    公开(公告)日:1959-06-09

    The invention comprises 5-sulphanilamido-2:4-dimethyl pyrimidine and its preparation by condensing acetamidene or a salt thereof with an a -alkoxymethylidene-acetoacetic ester such as ethyl a -ethoxymethylidene-acetoacetate, preferably in aqueous solution in the presence of an alkali, for example potassium carbonate, at about 20 DEG C., or in alcoholic solution in the presence of an alkali-metal alkoxide, treating the resulting 2:4 - dimethyl - pyrimidine - (5)-carboxylic acid ester by known methods for the conversion of a carboxylic acid ester into an amine, to convert the ester group into an amino group, reacting the resulting 5-amino-2:4-dimethyl-pyrimidine with benzene-sulphonyl halide which bears in the p-position a group convertible to an amino group by hydrolysis or reduction, such as an acetamino group or a nitro group and converting the p-substituent in the resulting sulphonamide, for example in 2:4 - dimethyl - 5 - (N4 - acetyl - sulphanilamido) pyrimidine or 2:5-dimethyl-5-(4-nitrophenylsulphonamido)-pyrimidine to give the desired sulphanilamide. The conversion of the 2:4 - dimethyl - pyrimidine - (5) - carboxylic acid ester into the corresponding amino compound is suitably effected by treating with ammonia to give the 2:4-dimethyl-pyrimidine-(5)-carboxylic amide, reacting with bromine in the presence of sodium methoxide at an elevated temperature to give an N-[2:4-dimethyl-pyrimidine - (5)] - carbamic acid ester and hydrolysing this by treatment with alkali. Examples are given. Starting materials. Alkyl esters of a -alkoxymethylidene-acetoacetic acid such as ethyl a -ethoxymethylideneacetoacetate are made by reacting the appropriate alkyl acetoacetate with an alkyl orthoformate. Specification 800,777 is referred to.

    该发明包括5-磺酰基-2:4-二甲基嘧啶及其制备方法,通过将乙酰亚胺或其盐与a-烷氧甲基-乙酰乙酸酯(例如乙基a-烷氧甲基-乙酰乙酸酯)缩合,最好在碱的存在下,在约20℃的溶液中或在醇溶液中在碱属烷氧化物的存在下进行,将得到的2:4-二甲基-嘧啶-(5)-羧酸酯通过已知的方法进行羧酸酯转化为胺,将酯基转化为基,然后将所得的5-基-2:4-二甲基嘧啶与苯磺酰卤反应,其p-位上带有可通过解或还原转化为基的基团,例如乙酰基基团或硝基基团,并将所得的磺酰胺中的p-取代基转化为期望的磺酰胺,例如2:4-二甲基-5-(N4-乙酰基-磺酰基基)嘧啶或2:5-二甲基-5-(4-硝基苯基磺酰基基)嘧啶。将2:4-二甲基-嘧啶-(5)-羧酸酯转化为相应的氨基化合物可通过用处理来实现,从而得到2:4-二甲基-嘧啶-(5)-羧酸酰胺,然后在升高的温度下在甲醇钠存在下与反应,以得到N-[2:4-二甲基-嘧啶-(5)]-氨基甲酸酯,然后通过碱处理解。给出了示例。起始材料为a-烷氧甲基-乙酰乙酸的烷基酯,例如乙基a-烷氧甲基-乙酰乙酸酯,通过将适当的烷基乙酰乙酸酯与烷基正甲酸酯反应制备而成。参考规范800,777。
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