Bamford–Stevens reaction - Wikipedia
The Bamford–Stevens reaction is a chemical reaction whereby treatment of tosylhydrazones with strong base gives alkenes. [1] [2] [3] It is named for the British chemist William Randall Bamford and the Scottish chemist Thomas Stevens Stevens (1900–2000).
【人名反应】Bamford-Stevens reaction ｜醛酮制备取代烯烃
2021年3月23日 · 碱（主要是 Na, NaOMe, LiH, NaH, NaNH2）催化分解醛和酮的芳基磺酰腙以生成烯烃，叫做Bamford-Stevens反应；当使用有机锂化物（或格氏试剂）作为碱时，则叫做Shapir…
Bamford-Stevens Reaction - Organic Chemistry Portal
Bamford-Stevens Reaction. Tosylhydrazones give alkenes upon treatment with strong bases. This reaction is performed in two steps, where the intermediate diazo compound may be isolated. Subsequent reaction with protic or aprotic solvents strongly …
有机人名反应——Bamford-Stevens反应 - 知乎 - 知乎专栏
2020年5月3日 · 在碱催化下醛酮的苯磺酰基腙分解生成烯的反应称为Bamford-Stevens反应。 与Shapiro反应类似，是从酮合成烯烃的方法。 重氮中间体可被分离，因而可用于重氮化合物的制备。
Bamford-Stevens Reaction - an overview | ScienceDirect Topics
The Bamford-Stevens Reaction refers to a base-mediated decomposition process of arenesulfonylhydrazones of ketones or aldehydes to produce alkenes or cyclopropanes via diazo compounds. AI generated definition based on: Comprehensive …
班福德-史蒂文斯反应 - 维基百科，自由的百科全书
2022年1月16日 · 醛 或 酮 的 对甲苯磺酰 腙 用 强碱 处理时，发生 消除 生成 烯烃 。 [ 1][ 2][ 3] 反应以英国化学家 William Randall Bamford 和苏格兰化学家 Thomas Stevens Stevens (1900-2000) 的名字命名。 反应在 非质子溶剂 中进行时主要生成 Z 型 烯烃 。 在 质子溶剂 中进行时生成 E 型和 Z 型烯烃的混合物。 如果用 有机锂试剂 作碱，则称为 Shapiro反应 ，产物同样是烯烃，但反应机理与 Bamford–Stevens 反应不同。 用于从酮制取烯烃。 α,β-不饱和醛的 Bamford–Stevens …
RedoxWK2 - Yale University
2016年9月22日 · Bamford-Stevens Reaction: The Bamford-Stevens reaction (1952, Scheme 4) of aldehyde or ketone tosylhydrazones was historically conducted with sodium dissolved in ethylene glycol at elevated temperatures.
Bamford–Stevens Reaction - SpringerLink
2021年1月29日 · The Bamford-Stevens reaction and the Shapiro reaction share a similar mechanistic pathway. The former uses a base such as Na, NaOMe, LiH, NaH, NaNH 2, heat, etc., whereas the latter employs bases such as alkyllithiums and Grignard reagents. As a result, the Bamford-Stevens reaction furnishes more-substituted olefins as the thermodynamic ...
Bamford–Stevens Reaction Mechanism and Applications
2022年2月10日 · Bamford–Stevens reaction is such an organic reaction that leads to the formation of alkene when tosyl hydrazone of an aldehyde or ketone is treated with Na in ethylene glycol. It also employs some other strong bases such as NaOMe, NaH, LiH, NaNH 2, etc.
Bamford‐Stevens Reaction - Major Reference Works - Wiley …
2010年9月15日 · This reaction is the transformation of ketones and aldehydes into alkenes through the base-promoted thermal or photolytic decomposition of p-toluenesulfonylhydrazones of the corresponding ketones or aldehydes and is known as the Bamford–Stevens reaction. This reaction is also referred to as the Bamford–Stevens olefination.