scholarly journals Rh2(Opiv)4-Catalyzed Reactions of Diazo Compound Derived from Meldrum's Acid and Styrenes. Efficient Synthesis of Cyclopropanes

2006 ◽  
Vol 27 (4) ◽  
pp. 503-507 ◽  
Keyword(s):  
Diazo Compound ◽  
Efficient Synthesis ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Catalyzed Reactions

Synthesis of functionalized chromones through sequential reactions in aqueous media

2014 ◽  
Vol 12 (30) ◽  
pp. 5757-5765 ◽  
Author(s):  
Saber Mehrparvar ◽  
Saeed Balalaie ◽  
Mahnaz Rabbanizadeh ◽  
Frank Rominger ◽  
Elmira Ghabraie
Keyword(s):  
Aqueous Media ◽  
Efficient Synthesis ◽  
Meldrum's Acid ◽  
Primary Alcohols ◽  
Meldrum’S Acid ◽  
Synthesis Protocol ◽  
Sequential Reactions

An efficient synthesis protocol has been developed for diversity-oriented functionalized compounds via four-component reaction of chromone carbaldehydes, Meldrum's acid, 4-hydroxyl coumarin or 6-methyl-4-hydroxyl-pyrone and primary alcohols in aqueous media.

Synthesis of Disubstituted γ-Butyrolactones and Spirocyclopropanes via Multicomponent Reaction of Aldehydes, Meldrum’s Acid and Sulfoxonium Ylides

2021 ◽  
Author(s):  
Shan-Shan Li ◽  
Qi Qin ◽  
Zhuang Qi ◽  
Li-Miao Yang ◽  
Yun Kang ◽  
...  
Keyword(s):  
Multicomponent Reaction ◽  
Aromatic Aldehydes ◽  
Efficient Synthesis ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Mild Conditions

An efficient synthesis of disubstituted γ-butyrolactones and spirocyclopropanes via multicomponent reaction of aldehydes, Meldrum’s acid and sulfoxonium ylides has been developed. Under mild conditions, electron-rich aromatic aldehydes reacted with Meldrum’s...

scholarly journals One Pot, Four Component Synthesis of Phthalazine-1,4-diones Derivatives in [BMIM][OH] Medium

2019 ◽  
Vol 32 (1) ◽  
pp. 45-48
Author(s):  
D.P. Loka Maheshwari ◽  
B. Satyanarayana
Keyword(s):  
Reaction Time ◽  
Room Temperature ◽  
Diethyl Phthalate ◽  
High Yield ◽  
Efficient Synthesis ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
One Pot

[BMIM][OH] mediated, green and efficient synthesis of phthalazines (5) have been developed by condensing diethyl phthalate (1), ethyl cyanohydrazide (2), substituted benzaldehyde (3) and malononitrile (4) in the presence of Meldrum’s acid at 60-65 °C and at room temperature for 60-90 min. The importance of this method includes shorter reaction time and high yield.

Efficient synthesis of acetylated bicyclic [n.3.0] hydroxypyrroles from cyclic lactams via flash vacuum pyrolysis of Meldrum's acid derivatives

1988 ◽  
Vol 53 (24) ◽  
pp. 5680-5685 ◽  
Author(s):  
Jean Claude Pommelet ◽  
Hamid Dhimane ◽  
Josselin Chuche ◽  
Jean Pierre Celerier ◽  
Mansour Haddad ◽  
...  
Keyword(s):  
Efficient Synthesis ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Flash Vacuum Pyrolysis ◽  
Vacuum Pyrolysis ◽  
Meldrum's Acid Derivatives

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.

Sign in / Sign up

Export Citation Format

Share Document