Practical Methylenation Reaction for Aldehydes and Ketones Using New Julia-Type Reagents
Practical Methylenation Reaction for Aldehydes and Ketones Using New Julia-Type Reagents
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DOI:
10.1021/acs.orglett.5b01049
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发表时间:
2015-05-15
期刊:
影响因子:
5.2
通讯作者:
Uchida, Nariaki
中科院分区:
文献类型:
--
作者:
Ando, Kaori;Kobayashi, Takahisa;Uchida, Nariaki
A new Julia-type methylenation reagent, 1-methyl-2-(methylsulfonyl)benzimidazole (1e), reacts with a variety of aldehydes and ketones in the presence of either NaHMLDS (-55 degrees C to rt) or t-BuOK (rt, 1 h) in DMF to give the corresponding terminal alkenes in high yields. The byproducts are easily removed, and the reaction conditions are mild and practical.