MicrowavE Assisted hydrolysis of Meldrum'S Acid Derivatives and decarboxylation of Derived Malonic Acids

2003 ◽  
Vol 2003 (3) ◽  
pp. 174-175 ◽  
Author(s):  
V.B. Helavi ◽  
S.B. Solabannavar ◽  
U.V. Desai ◽  
R.B. Mane
Keyword(s):  
Carboxylic Acids ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Microwave Assisted ◽  
High Yields ◽  
Short Time ◽  
Hydrolysis Of ◽  
Meldrum's Acid Derivatives

Microwave induced hydrolysis of alkyl Medrum's acids and decarboxylation of derived malonic acids using poly-4-vinylpyridine as a catalyst gives high yields of carboxylic acids in a short time.

An Expeditious One-Pot Three-Component Synthesis of 4-Aryl-3,4-dihydrobenzo[g] quinoline-2,5,10(1H)-triones under Green Conditions

2020 ◽  
Vol 23 (23) ◽  
pp. 2626-2634
Author(s):  
Saiedeh Kamalifar ◽  
Hamzeh Kiyani
Keyword(s):  
Reaction Medium ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
One Pot ◽  
One Pot Synthesis ◽  
Substituted Benzaldehydes ◽  
High Yields ◽  
First Time ◽  
Green Conditions

: An efficient and facial one-pot synthesis of 4-aryl-3,4-dihydrobenzo[g]quinoline- 2,5,10(1H)-triones was developed for the first time. The process proceeded via the three-component cyclocondensation of 2-amino-1,4-naphthoquinone with Meldrum’s acid and substituted benzaldehydes under green conditions. The fused 3,4-dihydropyridin-2(1H)- one-ring naphthoquinones have been synthesized with good to high yields in refluxing ethanol as a green reaction medium. This protocol is simple and effective as well as does not involve the assistance of the catalyst, additive, or hazardous solvents.

Preparation of NaNbO3 nanoplates and their application in the synthesis of arylidene indan-1,3-diones, functionalized C-3 isobenzofuranones and Meldrum’s acid derivatives

2022 ◽  
Author(s):  
Silma Francielle da Silva ◽  
Felipe Anchieta e Silva ◽  
Ana Paula Martins de Souza ◽  
Thenner Silva Rodrigues ◽  
Róbson Ricardo Teixeira
Keyword(s):  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Meldrum's Acid Derivatives

Synthesis of retro-inverso peptides via Meldrum’s acid derivatives: Insight on the reaction mechanism

Peptides 1992 ◽  
1993 ◽  
pp. 607-608
Author(s):  
Massimo Pinori ◽  
Silvana Cappelletti ◽  
Andrea Zaliani ◽  
Antonio Silvio Verdini
Keyword(s):  
Reaction Mechanism ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Meldrum's Acid Derivatives

scholarly journals 5-Carbonyl-1,3-oxazine-2,4-diones from N-Cyanosulfoximines and Meldrum’s Acid Derivatives

2020 ◽  
Vol 22 (16) ◽  
pp. 6667-6670
Author(s):  
Felix Brosge ◽  
Johannes Florian Kochs ◽  
Mariela Bregu ◽  
Khai-Nghi Truong ◽  
Kari Rissanen ◽  
...  
Keyword(s):  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Meldrum's Acid Derivatives

scholarly journals Innovative Bio-Based Organic UV-A and Blue Light Filters from Meldrum’s Acid

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2178 ◽  
Author(s):  
Cédric Peyrot ◽  
Matthieu M. Mention ◽  
Fanny Brunissen ◽  
Patrick Balaguer ◽  
Florent Allais
Keyword(s):  
Endocrine Disruption ◽  
Hydroxycinnamic Acid ◽  
Uv Filters ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Cosmetic Industry ◽  
Light Filters ◽  
Photo Stability ◽  
Organic Uv Filters ◽  
Meldrum's Acid Derivatives

Faced with the ban of some organic UV filters such as octinoxate or avobenzone, especially in Hawaii, it became essential to offer new alternatives that are both renewable and safe for humans and the environment. In this context, a class of bio-based molecules displaying interesting UV filter properties and great (photo)stability has been developed from Meldrum’s acid and bio-based and synthetic p-hydroxycinnamic acids, furans and pyrroles. Moreover, p-hydroxycinnamic acid-based Meldrum’s derivatives possess valuable secondary activities sought by the cosmetic industry such as antioxidant and anti-tyrosinase properties. The evaluation of the properties of mixture of judiciously chosen Meldrum’s acid derivatives highlighted the possibility to modulate secondary activity while maintaining excellent UV protection. Meldrum’s acid derivatives are not only competitive when benchmarked against organic filters currently on the market (i.e., avobenzone), but they also do not exhibit any endocrine disruption activity.

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