脱基化作为一种从ortho-Phenyl-phosphonate-boranes合成非传统盐的策略
Anthony D Kornokovich1, Arnold L Rheingold2, Vallabha R Rikka3
1Department of Chemistry, Case Western Reserve University, 2080 Adelbert Road, Cleveland, Ohio 44106, United States.
Inorganic chemistry
|January 13, 2026
概括
新的ortho-phenyl-phosphonate-boranes及其,和盐被合成. 这些化合物具有分子内相互作用,热稳定性和双排放性质.
科学领域:
- 有机金属化学 有机金属化学
- 化学 化学
- 酸盐化学 酸盐化学
背景情况:
- 有机化合物是合成中的多功能构建块.
- 酸联体具有独特的协调特性.
- 在正位置换的环中和的组合呈现出有趣的结构和电子可能性.
研究的目的:
- 为了合成和描述新型的ortho-phenyl-phosphonate-boranes.
- 探索这些化合物的脱基和盐形成.
- 研究它们的结构性,热性和光物理性质.
主要方法:
- 合成和描述2a-c (2a-c) 的甲基酸和相应的,和盐.
- 多核核核磁共振光谱 (1H,13C{1H},31P{1H}) 用于结构阐明.
- 单晶X射线衍射以确定固态结构.
- 热重力测量分析 (TGA) 用于评估热稳定性.
- 在各种有机溶剂中的可溶性试验.
- 光物理研究,以调查排放特性.
主要成果:
- 已经成功地制备和特征化了几种正甲酸 (1-BR2-2-{P(O) ((OEt) 2}C6H4).
- 选择性单脱化产生了 орто---酸酸盐.
- X射线衍射揭示了分子内P=O···B相互作用,形成伪异环环.
- 盐[Li(MeCN) [2][3]显示出高热稳定性 (>200°C) 和良好的溶解性.
- 盐与电友的反应产生了新的ortho-phenyl-phosphonate-boranes. 盐与电友的反应产生了新的ortho-phenyl-phosphonate-boranes.
- 化合物2a和[Li(MeCN) [2][3]表现出弱的,依赖于溶剂的双重排放.
结论:
- 合成的ortho-phenyl-phosphonate-boranes及其金属盐是稳定且结构性有趣的化合物.
- 分子内P=O·B相互作用在它们的结构中起着关键作用.
- 这些化合物具有良好的热稳定性和可溶性,使其在各种应用中具有潜在的用途.
- 观察到的双重辐射表明材料科学和光电子学中的应用潜力.
相关概念视频
Hydroboration-Oxidation of Alkenes
11.0K
In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
11.0K
α-Alkylation of Ketones via Enolate Ions
3.8K
Ketones with α protons are deprotonated by strong bases like lithium diisopropylamide (LDA) to form enolate ions. The anion is stabilized by resonance, and its hybrid structure exhibits negative charges on the carbonyl oxygen and the α carbon. This ambident nucleophile can attack an electrophile via two possible sites: the carbonyl oxygen, known as O-attack, or the α carbon, known as C-attack. The nucleophilic attack via the carbanionic site is preferred. This is due to the...
3.8K
Acid Halides to Alcohols: LiAlH4 Reduction
3.8K
Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
3.8K
Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation
20.7K
Introduction
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.
20.7K
Alcohols from Carbonyl Compounds: Reduction
12.1K
Reduction is a simple strategy to convert a carbonyl group to a hydroxyl group. The three major pathways to reduce carbonyls to alcohols are catalytic hydrogenation, hydride reduction, and borane reduction.
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
12.1K
Acid Halides to Alcohols: Grignard Reaction
2.9K
Organomagnesium halides, commonly known as Grignard reagents, convert acid halides to tertiary alcohols. The reaction requires two equivalents of the Grignard reagent and proceeds via a ketone intermediate.
Grignard reagents are a source of carbanions and function as nucleophiles. The mechanism begins with the nucleophilic attack by the carbanion at the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs,...
Grignard reagents are a source of carbanions and function as nucleophiles. The mechanism begins with the nucleophilic attack by the carbanion at the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs,...
2.9K


