About: 4+4 Photocycloaddition

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The [4+4] Photocycloaddition is a cycloaddition reaction in which two unsaturated molecules connect via four atoms from each molecule (hence "4 + 4") to create an eight-membered ring. As a photochemical reaction, it is promoted by some form of light, as opposed to a thermal process.

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  • The [4+4] Photocycloaddition is a cycloaddition reaction in which two unsaturated molecules connect via four atoms from each molecule (hence "4 + 4") to create an eight-membered ring. As a photochemical reaction, it is promoted by some form of light, as opposed to a thermal process. (en)
  • [4+4]环加成反应是一种光化学环加成反应，指两个含有四原子共轭体系的分子经光促条件形成一个新的含八元环的分子的反应，可用于八元环及更大环体系的构建。此类反应首先发现于蒽的光二聚化反应中。受副产物竞争、正向反应熵不利等因素影响，该类反应应用不广，但因其简便地构成了大环，仍具有一定应用价值。 (zh)
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  • The [4+4] Photocycloaddition is a cycloaddition reaction in which two unsaturated molecules connect via four atoms from each molecule (hence "4 + 4") to create an eight-membered ring. As a photochemical reaction, it is promoted by some form of light, as opposed to a thermal process. (en)
  • [4+4]环加成反应是一种光化学环加成反应，指两个含有四原子共轭体系的分子经光促条件形成一个新的含八元环的分子的反应，可用于八元环及更大环体系的构建。此类反应首先发现于蒽的光二聚化反应中。受副产物竞争、正向反应熵不利等因素影响，该类反应应用不广，但因其简便地构成了大环，仍具有一定应用价值。 (zh)
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  • 4+4 Photocycloaddition (en)
  • 4+4环加成反应 (zh)
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