dibutyldiisocyanatotin | 3294-55-1

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机过渡后金属化合物
• 英文名称: dibutyldiisocyanatotin
• 英文别名: Dibutylzinn-diisocyanat
• CAS: 3294-55-1
• 化学式: C₁₀H₁₈N₂O₂Sn
• 分子量: 316.975
• InChiKey: XMPRZFWANVGSJH-UHFFFAOYSA-N

物化性质

• 沸点：
  289.7±23.0 °C(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  15
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  58.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  dibutyldimethoxytin 、 氨基甲酸甲酯 以 xylene 为溶剂， 生成 dibutyldiisocyanatotin
  参考文献：
  名称：

  Investigation of dialkyltin compounds as catalysts for the synthesis of dialkyl carbonates from alkyl carbamates

  摘要：

  New syntheses for dibutyldimethoxytin, dibutyldiisocyanatotin and 1,1,3,3-tetrabutyl-l,3-diisocyanatodistannoxane as well as the novel compounds dibutylisocyanatomethoxytin and 1,1,3,3-tetrabutyl-1-methoxy-3-isocyanatodistannoxane are described. These compounds were characterized by elemental analyses as well as Sn-119, C-13, and proton NMR, FTIR, MS and HPLC. They were found to have good catalytic activity for the synthesis of symmetrical dialkyl carbonates from alkyl carbamates and the corresponding alcohols. Extensive NMR and IR data indicate that tin compounds containing both an alkoxy and an isocyanato moiety bounded to tin are reaction intermediates in the synthesis of dialkyl carbonate and their formation is a key step in this catalytic process. The mechanism of carbonate synthesis involves the interconversion of the various tin species present in the reaction mixture to these reaction intermediates. Dibutyldimethoxytin, dibutylisocyanatomethoxytin and 1,1,3,3-tetrabutyl-1-methoxy-3-isocyanatodistannoxane have similar activity and are more active (10-14%) than dibutyloxotin for the synthesis of symmetrical dialkyl carbonates. (C) 1998 Elsevier Science S.A. All rights reserved.

  DOI：

  10.1016/s0022-328x(97)00787-0

文献信息

• Investigation of dialkyltin compounds as catalysts for the synthesis of dialkyl carbonates from alkyl carbamates
  作者：Elena N. Suciu、Barbara Kuhlmann、George A. Knudsen、Robert C. Michaelson

  DOI：10.1016/s0022-328x(97)00787-0

  日期：1998.4

  New syntheses for dibutyldimethoxytin, dibutyldiisocyanatotin and 1,1,3,3-tetrabutyl-l,3-diisocyanatodistannoxane as well as the novel compounds dibutylisocyanatomethoxytin and 1,1,3,3-tetrabutyl-1-methoxy-3-isocyanatodistannoxane are described. These compounds were characterized by elemental analyses as well as Sn-119, C-13, and proton NMR, FTIR, MS and HPLC. They were found to have good catalytic activity for the synthesis of symmetrical dialkyl carbonates from alkyl carbamates and the corresponding alcohols. Extensive NMR and IR data indicate that tin compounds containing both an alkoxy and an isocyanato moiety bounded to tin are reaction intermediates in the synthesis of dialkyl carbonate and their formation is a key step in this catalytic process. The mechanism of carbonate synthesis involves the interconversion of the various tin species present in the reaction mixture to these reaction intermediates. Dibutyldimethoxytin, dibutylisocyanatomethoxytin and 1,1,3,3-tetrabutyl-1-methoxy-3-isocyanatodistannoxane have similar activity and are more active (10-14%) than dibutyloxotin for the synthesis of symmetrical dialkyl carbonates. (C) 1998 Elsevier Science S.A. All rights reserved.