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端位亚甲基

丙烯分子圖中的藍色部分是端位亚甲基

有機化學中,端位亚甲基甲亚基[1]亚甲基的一种,是由兩個原子與一個原子結合的結合的分子的任何部分,碳原子通過雙鍵與分子的其餘部分連接[2]。該基團可以表示為=CH
2
,其中'='表示雙鍵。

结构式为H2C=。

合成

含端位亚甲基的化合物可由亚甲基三苯基磷英语MethylenetriphenylphosphoraneWittig反应制得。[3]

乙烯酮的结构式为H2C=C=O,这个活泼的化合物可由溴乙酰溴和锌反应制得。[4]

常见的亚甲基化合物
名称 结构式
亚甲基环丙烷英语Methylenecyclopropane
亚甲基环己烷
亚甲基三苯基磷

参考文献

  1. ^ 中国化学会有机化合物命名审定委员会. 有机化合物命名原则 2017. 北京:科学出版社, 2018. ISBN 978-7-03-055295-2. p 11
  2. ^ methylidene (preferred IUPAC name) (PDF): 314. [2024-02-25]. (原始内容存档 (PDF)于2022-04-01). 
  3. ^ METHYLENECYCLOHEXANE. Organic Syntheses. 1960, 40: 66 [2021-05-23]. doi:10.15227/orgsyn.040.0066. (原始内容存档于2022-02-27). 
  4. ^ Thomas T. Tidwell. Ein Jahrhundert Ketene (1905-2005): die Entdeckung einer vielseitigen Klasse reaktiver Intermediate. Angewandte Chemie. 2005-09-12, 117 (36): 5926–5933 [2021-05-23]. ISSN 0044-8249. doi:10.1002/ange.200500098 (德语). 
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端位亚甲基
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