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ethyl β-bromoethylideneaminocarbamate | 62105-91-3

中文名称
——
中文别名
——
英文名称
ethyl β-bromoethylideneaminocarbamate
英文别名
N'-(2-bromoethylidene)-hydrazinecarboxylic acid ethyl ester;2-Bromaethylidenaminocarbaminsaeureaethylester;Ethyl 2-(2-bromoethylidene)hydrazinecarboxylate;ethyl N-(2-bromoethylideneamino)carbamate
ethyl β-bromoethylideneaminocarbamate化学式
CAS
62105-91-3
化学式
C5H9BrN2O2
mdl
——
分子量
209.043
InChiKey
SKENZCBNZGXLMI-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

物化性质

  • 熔点:
    129°(dec)
  • 密度:
    1.51±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    1.1
  • 重原子数:
    10
  • 可旋转键数:
    4
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.6
  • 拓扑面积:
    50.7
  • 氢给体数:
    1
  • 氢受体数:
    3

安全信息

  • 危险等级:
    IRRITANT
  • 海关编码:
    2928000090

反应信息

  • 作为反应物:
    描述:
    ethyl β-bromoethylideneaminocarbamate盐酸 、 sodium cyanoborohydride 作用下, 以 甲醇二氯甲烷 为溶剂, 反应 1.0h, 生成 N'-[2-(p-tosyl)-ethyl]-hydrazinecarboxylic acid ethyl ester
    参考文献:
    名称:
    Synthesis of β-tosylethylhydrazine and its use in preparation of N-protected pyrazoles and 5-aminopyrazoles
    摘要:
    beta-Tosylethylhydrazine (6) can be prepared efficiently in one step from commercially available p-tolyl vinyl sulfone (7) and hydrazine hydrate. This hydrazine reacts with both 1,3-diketones and conjugated ynones in glacial acetic acid to provide a variety of N-tosylethyl-protected (TSE) pyrazoles in good yields. The TSE group can be removed from the pyrazoles using potassium t-butoxide in THF at -30 degreesC-rt. In addition, hydrazine 6 condenses with beta-ketonitriles and beta-aminoacrylonitriles to afford 5-aminopyrazoles, which can be deprotected by brief treatment with NaOEt in EtOR/DMSO at 45 degreesC. (C) 2003 Elsevier Ltd. All rights reserved.
    DOI:
    10.1016/j.tet.2003.11.046
  • 作为产物:
    参考文献:
    名称:
    Synthesis of β-tosylethylhydrazine and its use in preparation of N-protected pyrazoles and 5-aminopyrazoles
    摘要:
    beta-Tosylethylhydrazine (6) can be prepared efficiently in one step from commercially available p-tolyl vinyl sulfone (7) and hydrazine hydrate. This hydrazine reacts with both 1,3-diketones and conjugated ynones in glacial acetic acid to provide a variety of N-tosylethyl-protected (TSE) pyrazoles in good yields. The TSE group can be removed from the pyrazoles using potassium t-butoxide in THF at -30 degreesC-rt. In addition, hydrazine 6 condenses with beta-ketonitriles and beta-aminoacrylonitriles to afford 5-aminopyrazoles, which can be deprotected by brief treatment with NaOEt in EtOR/DMSO at 45 degreesC. (C) 2003 Elsevier Ltd. All rights reserved.
    DOI:
    10.1016/j.tet.2003.11.046
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文献信息

  • 一种奥拉帕尼化合物的合成方法
    申请人:山东裕欣药业有限公司
    公开号:CN107325055A
    公开(公告)日:2017-11-07
    本发明涉及一种奥拉帕尼化合物的合成方法,该合成方法包括如下步骤:1)以溴苯(化合物8)为起始原料,在叔丁醇钾存在的条件下与化合物6反应得到化合物5;2)以邻氟苯甲酸甲酯(化合物4)为原料,二异丙基碳二亚胺(DIC)和4‑N,N‑二甲基吡啶(DMAP)为催化剂,与1‑环丙甲酰基哌嗪(化合物3)反应,得到化合物2;3)以[Emim]Cl‑AlCl3离子液体为催化剂,将上述化合物5与化合物2反应,生成奥拉帕尼(化合物1)。本发明克服了现有技术副反应多、产率低、纯度低等难题,形成了反应路线短、反应条件温和、收率和纯度高、操作简便的新工艺。
  • 一种奥拉帕尼化合物的精制方法
    申请人:山东裕欣药业有限公司
    公开号:CN107266370A
    公开(公告)日:2017-10-20
    本发明涉及一种奥拉帕尼化合物的精制方法,包括奥拉帕尼粗品的合成和奥拉帕尼的精制,其中精制包括:1)在反应瓶中加入乙酸乙酯石油醚混合液和奥拉帕尼粗品,慢慢加热至50~55℃,保温搅拌20min,继续升温至70~75℃,搅拌,粗品溶解,得到粗品溶液;向粗品溶液中加入活性炭,脱色,过滤,收集滤液;2)缓慢降温,将滤液温度降至20~25℃,保温,搅拌;3)再将滤液降温至0℃及以下,控制搅拌速度15转/分钟,加入晶种,控制温度及搅拌速度养晶1.5h后,过滤,滤饼用少量乙酸乙酯石油醚混合溶液冲洗,干燥,得奥拉帕尼精品。本发明提供的精制方法具有条件简单,奥拉帕尼二取代物减少,产品纯度高等优点。
  • Synthesis of 5-amino-1,2,3-thiadiazole
    作者:R. S. Belen'kaya、A. V. Zimichev、O. P. Yukova
    DOI:10.1007/bf00472629
    日期:1989.1
  • Synthesis of β-tosylethylhydrazine and its use in preparation of N-protected pyrazoles and 5-aminopyrazoles
    作者:David M. Dastrup、Amy H. Yap、Steven M. Weinreb、James R. Henry、Andrew J. Lechleiter
    DOI:10.1016/j.tet.2003.11.046
    日期:2004.1
    beta-Tosylethylhydrazine (6) can be prepared efficiently in one step from commercially available p-tolyl vinyl sulfone (7) and hydrazine hydrate. This hydrazine reacts with both 1,3-diketones and conjugated ynones in glacial acetic acid to provide a variety of N-tosylethyl-protected (TSE) pyrazoles in good yields. The TSE group can be removed from the pyrazoles using potassium t-butoxide in THF at -30 degreesC-rt. In addition, hydrazine 6 condenses with beta-ketonitriles and beta-aminoacrylonitriles to afford 5-aminopyrazoles, which can be deprotected by brief treatment with NaOEt in EtOR/DMSO at 45 degreesC. (C) 2003 Elsevier Ltd. All rights reserved.
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