1-ethyl-2-isoselenocyanatobenzene | 1231894-16-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 1-ethyl-2-isoselenocyanatobenzene
• CAS: 1231894-16-8
• 化学式: C₉H₉NSe
• 分子量: 210.137
• InChiKey: CYXAGOYYTAHENX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.95
• 重原子数：
  11.0
• 可旋转键数：
  2.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  12.36
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  1-ethyl-2-isoselenocyanatobenzene 在 一水合肼 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 生成 3-amino-2-(2-ethylphenylimino)-1,3-selenazolidin-4-one
  参考文献：
  名称：

  Selective synthesis of novel 2-imino-1,3-selenazolidin-4-ones and 2-amino-1,3,4-selenadiazin-5-ones from isoselenocyanates

  摘要：

  An efficient and regioselective synthesis of 2-imino-1,3-selenazolidin-4-ones and 2-amino-1,3,4-selenadiazin-5-ones was achieved via one-pot reaction of isoselenocyanates, hydrazines, and ethyl chloroacetate or chloroacetyl chloride, respectively. Plausible mechanisms for these transformations were given. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2010.12.068
• 作为产物：
  描述：

  甲酸 、 2-乙基苯胺 在 selenium 、 三光气 、 三乙胺 作用下， 以 甲苯 为溶剂， 反应 21.5h， 以83%的产率得到1-ethyl-2-isoselenocyanatobenzene
  参考文献：
  名称：

  从邻氨基苯甲酸和异硒氰酸芳基酯高效合成 4 H-苯并[ d ][1,3]oxazin-4-ones

  摘要：

  已经开发出一种从单取代邻氨基苯甲酸和不同取代的异硒氰酸苯基酯合成 23 4H-苯并[d][1,3]恶嗪-4-酮，其中 18 种是新型的，且不使用任何刺激性试剂的合成方法。反应过程中沉淀的硒粉可有效回收用于制备异硒氰酸芳基酯。

  DOI：

  10.3184/174751913x13686242406479

文献信息

• Synthesis of Cyanamides from Isoselenocyanates Promoted by Recyclable Ionic Liquid-Supported (Diacetoxyiodo)Benzene
  作者：Xue Li、Yingyi Huang、Bin Gan、Zhisheng Mi、Yuanyuan Xie

  DOI：10.3184/174751915x14447479752475

  日期：2015.11

  One-pot synthesis of cyanamides from isoselenocyanates through deselenisation promoted by ionic liquid-supported hypervalent iodine(III) reagent 1-(4-diacetoxyiodobenzyl)-3-methylimidazolium tetrafluoroborate ([dibmim]⁺[BF₄]⁻) was developed. This approach provided a simple, mild and environmentally benign way to construct cyanamides in good yields. Moreover, powder Se and [dibmim]⁺[BF₄]⁻ could be easily recycled. It was the first example of [dibmim]⁺[BF₄]⁻ to be used as a deselenising agent.

  在离子液体支持的高价碘（III）试剂 1-（4-二乙酰氧基碘苄基）-3-甲基咪唑四氟硼酸盐（[dibmim]+[BF4]-）的促进下，通过脱硒法从异硒氰酸酯一步合成氰酰胺。这种方法提供了一种简单、温和且对环境无害的方法来构建氰酰胺，而且产率很高。此外，粉末 Se 和 [dibmim]+[BF4]- 易于回收。这是[dibmim]+[BF4]- 用作脱硒剂的第一个实例。
• Novel Synthesis of 2-Aminobenzimidazoles from Isoselenocyanates
  作者：Yuanyuan Xie、Fan Zhang、Jianjun Li、Xiangjun Shi

  DOI：10.1055/s-0029-1219395

  日期：2010.4

  An efficient one-pot procedure for the synthesis of 2-aminobenzimidazoles from isoselenocyanates and various substituted diamines is described. Precipitation of elemental selenium from the reaction mixture greatly simplifies the purification procedure and also allows it to be re-used for preparation of isoseleno­cyanates. A possible mechanism for the formation of 2-aminobenzimidazoles is proposed.

  描述了一种高效的一锅法合成2-氨基苯并咪唑的程序，该反应使用了异硒氰酸酯和各种取代二胺。从反应混合物中沉淀出的元素硒大大简化了纯化程序，并且还允许其被重新用于制备异硒氰酸酯。提出了一种可能的2-氨基苯并咪唑形成机制。
• An Efficient Synthesis of 2-Aminobenzoxazoles and 2-Aminobenzothiazoles from 2-Aminophenols or 2-Aminothiophenols and Isoselenocyanates
  作者：Yuanyuan Xie、Fan Zhang、Xiaodong Chen、Jianjun Li

  DOI：10.3987/com-10-11987

  日期：——

  An expeditious method to access 2-aminobenzoxazoles and 2-aminobenzothiazoles from various substituted 2-aminophenols and 2-aminothiophenols, respectively, with isoselenocyanates in a one pot procedure is reported. Elemental Se precipitates nearly quantitatively in the reaction without any deselenizing agent and it can be reused. A possible mechanism for the formation of the target products is proposed.
• Synthesis of 2-amino-1,3,4-oxadiazoles from isoselenocyanates via cyclodeselenization
  作者：Yuanyuan Xie、Junli Liu、Ping Yang、Xiangjun Shi、Jianjun Li

  DOI：10.1016/j.tet.2011.05.100

  日期：2011.7

  An efficient one-pot method to access 2-amino-1,3,4-oxadiazoles from isoselenocyanates and hydrazides or dihydrazides was developed via cyclodeselenization. Without any harsh reagents, various 2-amino-1,3,4-oxadiazoles were obtained in considerably high yields (82%-97%) and purities (>99%) directly with simple crystallization in ethanol. And the formed precipitated Se powder during the reaction could be recycled for preparation of isoselenocyanates efficiently. A plausible mechanism is proposed for the formation of the target products. (C) 2011 Elsevier Ltd. All rights reserved.