在强大的生物废物骨炭-布朗斯特德固体酸催化剂上,高效合成胺-5-碳烯衍生物
Zahra Siahpour1, Maryam Hajjami2
1Department of Organic Chemistry, Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 6517838683, Iran.
Scientific reports
|December 5, 2024
概括
食品行业的骨废物被转化为骨炭,一种新的固体酸生物催化剂. 这种环保的催化剂能有效合成胺衍生物,并且可重复使用,为有机合成提供一种可持续的方法.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 有机合成 有机合成
背景情况:
- 来自食品工业的骨废物带来了处置挑战.
- 从骨头中提取的骨炭,由于酸和石墨碳,具有独特的特性.
- 开发可持续和可重复使用的催化剂对于绿色化学至关重要.
研究的目的:
- 研究骨废物转化为骨炭的过程.
- 为了评估硫酸改性骨炭作为固酸生物催化剂的催化性能.
- 探索这种新型催化剂在胺-5-碳烯衍生物的合成中的应用.
主要方法:
- 骨废物被转化为骨炭.
- 骨炭用硫酸进行了修改.
- 使用FT-IR,BET,SEM,TEM,TGA,EDS和XRD进行催化剂表征.
- 测试催化剂在有机合成中的可重复使用性和效率.
主要成果:
- 从骨废物中成功合成了骨炭.
- 修改后的骨炭在合成pyrimidine-5-carbonitrile衍生物方面表现出有效的催化活性.
- 催化剂被证明可以在几个周期内重复使用,而不会显著地降低效率.
- 鉴定证实了骨炭催化剂的独特特性.
结论:
- 骨炭是一种可行和可持续的材料,用于制造环保固体酸生物催化剂.
- 改造的骨炭催化剂为有机合成提供了一个新的,可重复使用的平台,特别是用于胺酸衍生物.
- 这项研究强调了首次使用骨炭作为有机合成中的催化剂支持,这是一个重要的进步.
相关概念视频
01:15α-Bromination of Carboxylic Acids: Hell–Volhard–Zelinski Reaction
2.9K
The method to achieve α-brominated carboxylic acids using a mixture of phosphorus tribromide and bromine is known as the Hell–Volhard–Zelinski reaction. The reaction is catalyzed by phosphorus tribromide, which can be used directly or produced in situ from red phosphorus and bromine. The mechanism comprises PBr3 catalyzed conversion of acid to acid bromide and hydrogen bromide. The acid bromide enolizes to its enol form in the presence of HBr. The nucleophilic enol attacks the...
2.9K
01:07Preparation of Acid Anhydrides
3.1K
One of the methods for preparing symmetrical or unsymmetrical acid anhydrides involves the treatment of acid chlorides with the sodium salt of carboxylic acids. The reaction proceeds via a nucleophilic acyl substitution.
The carboxylate ion acts as a nucleophile that attacks the carbonyl carbon of the acid chloride to form a tetrahedral intermediate. Subsequently, the re-formation of the carbonyl group with the loss of the chloride ion as a leaving group leads to the formation of an acid...
The carboxylate ion acts as a nucleophile that attacks the carbonyl carbon of the acid chloride to form a tetrahedral intermediate. Subsequently, the re-formation of the carbonyl group with the loss of the chloride ion as a leaving group leads to the formation of an acid...
3.1K
01:01Acid Halides to Carboxylic Acids: Hydrolysis
2.5K
Hydrolysis of acid halides is a nucleophilic acyl substitution reaction in which acid halides react with water to give carboxylic acids. The reaction occurs readily and does not require acid or a base catalyst.
As shown below, the mechanism involves a nucleophilic attack by water at the carbonyl carbon to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen π bond along with the departure of a halide ion. A final proton transfer step yields carboxylic...
As shown below, the mechanism involves a nucleophilic attack by water at the carbonyl carbon to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen π bond along with the departure of a halide ion. A final proton transfer step yields carboxylic...
2.5K
01:13Preparation of Carboxylic Acids: Carboxylation of Grignard Reagents
4.3K
Carboxylic acids can be prepared by the carboxylation of Grignard reagents (RMgX). This method is convenient for converting alkyl (primary, secondary or tertiary), vinyl, benzyl, and aryl halides to carboxylic acids with one additional carbon than the starting RMgX.
4.3K
01:26Synthesis of α-Substituted Carbonyl Compounds: The Stork Enamine Reaction
3.3K
α-Substituted ketones or aldehydes can be synthesized from enamines by the Stork enamine reaction, named after its pioneer Gilbert Stork. Enamines are useful synthetic intermediates where the lone pair on nitrogen is in conjugation with the C=C bond. They resemble enolate ions, as the resonance forms of both species have a nucleophilic α carbon.
3.3K
01:18Carboxylic Acids to Acid Chlorides
6.8K
Carboxylic acids react with SOCl2 or PCl5 to form acid chlorides. Amongst the carboxylic acid derivatives, acid chlorides are the most reactive and synthetically important derivatives. They are useful reagents for Friedel–Crafts acylation of some aromatic compounds.
6.8K