2-bromo-3-isocyanothiophene | 1160653-44-0

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 芳基卤化物
• 英文名称: 2-bromo-3-isocyanothiophene
• CAS: 1160653-44-0
• 化学式: C₅H₂BrNS
• 分子量: 188.048
• InChiKey: JUSXOYZMDQOJQD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  32.6
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  二苯甲酮 、 2-bromo-3-isocyanothiophene 在 正丁基锂 、 水 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 5.33h， 以52%的产率得到6,6-diphenyl-4H-thieno[3,2-b]pyrrol-5(6H)-one
  参考文献：
  名称：

  Reactions of ortho-Lithiophenyl (-Hetaryl) Isocyanides with Carbonyl Compounds: Rearrangements of 2-Metalated 4H-3,1-Benzoxazines

  摘要：

  ortho-Lithiophenyl (-hetaryl) isocyanides react with aldehydes and ketones providing isocyanoalcohols 8 (36-89%, nine examples), 4H-3,1-benzoxazines 9 (45-78%, six examples) or, after two types of rearrangements, isobenzofuran-1(3H)-imines (iminophthalanes) 18 (52-75%, four examples), or indolin-2-ones 19 (42-79%, two. examples), depending on the reaction conditions and substitution patterns. Isocyanoalcohols 8, in turn, were converted to 9 or 18 under Cu(I) catalysis (66-86%, eight examples). 4H-3, 1-Benzoxazin-4-ones 39-Nu and isatoic anhydride 40 were obtained by the reaction of 2 with carbon dioxide followed by trapping of the lithiated intermediate with iodine and subsequent reactions with nucleophiles (45-60%, three examples).

  DOI：

  10.1021/jo9004734
• 作为产物：
  描述：

  N-(2-bromothiophen-3-yl)formamide 在 三乙胺 、 三氯氧磷 作用下， 以 二氯甲烷 为溶剂， 反应 0.42h， 以85%的产率得到2-bromo-3-isocyanothiophene
  参考文献：
  名称：

  Reactions of ortho-Lithiophenyl (-Hetaryl) Isocyanides with Carbonyl Compounds: Rearrangements of 2-Metalated 4H-3,1-Benzoxazines

  摘要：

  ortho-Lithiophenyl (-hetaryl) isocyanides react with aldehydes and ketones providing isocyanoalcohols 8 (36-89%, nine examples), 4H-3,1-benzoxazines 9 (45-78%, six examples) or, after two types of rearrangements, isobenzofuran-1(3H)-imines (iminophthalanes) 18 (52-75%, four examples), or indolin-2-ones 19 (42-79%, two. examples), depending on the reaction conditions and substitution patterns. Isocyanoalcohols 8, in turn, were converted to 9 or 18 under Cu(I) catalysis (66-86%, eight examples). 4H-3, 1-Benzoxazin-4-ones 39-Nu and isatoic anhydride 40 were obtained by the reaction of 2 with carbon dioxide followed by trapping of the lithiated intermediate with iodine and subsequent reactions with nucleophiles (45-60%, three examples).

  DOI：

  10.1021/jo9004734

文献信息

• Synthesis of 1-Substituted Benzimidazoles from<i>o</i>-Bromophenyl Isocyanide and Amines
  作者：Alexander V. Lygin、Armin de Meijere

  DOI：10.1002/ejoc.200900820

  日期：2009.10

  o-Bromophenyl isocyanide (1-Br) reacts with various primary amines under CuI catalysis to afford 1-substituted benzimidazoles 4 in moderate to good yields (38–70 %, 13 examples). Analogously, 2-bromo-3-isocyanothiophene (6) furnishes 3-substituted 3H-thieno[2,3-d]imidazoles 7 (44–49 %, 3 examples). (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)

  邻溴苯基异氰化物 (1-Br) 在 CuI 催化下与各种伯胺反应，以中等至良好的产率（38-70%，13 个例子）得到 1-取代的苯并咪唑 4。类似地，2-bromo-3-isocyanothiophene (6) 提供了 3-取代的 3H-噻吩并 [2,3-d] 咪唑 7（44-49%，3 个例子）。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)