✦ LIBER ✦

Simple, Efficient, and Catalyst-Free Synthesis of (2-Amino-4H-1-benzopyran-4-yl)phosphonates in Polyethylene Glycol

✍ Scribed by Biswanath Das; Penagaluri Balasubramanyam; Gandolla Chinna Reddy; Nayaki Salvanna

Publisher: John Wiley and Sons
Year: 2011
Tongue: German
Weight: 138 KB
Volume: 94
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.201000461

No coin nor oath required. For personal study only.

✦ Synopsis

Several (2-amino-4H-1-benzopyran-4-yl)phosphonates were efficiently synthesized by employing a multicomponent protocol involving a salicylaldehyde, malononitrile or ethyl cyanoacetate, and a trialkyl phosphite in polyethylene glycol. The latter could be recovered and re-used. No additional solvent or catalyst was required. To the best of our knowledge, this is the first report of the one-pot preparation of (2-amino-4H-1-benzopyran-4-yl)phosphonic acid dimethyl esters.

📜 SIMILAR VOLUMES

ChemInform Abstract: Novel Synthetic Met

ChemInform Abstract: Novel Synthetic Methodologies. Part 216. Simple, Efficient, and Catalyst-Free Synthesis of (2-Amino-4H-1-benzopyran-4-yl)phosphonates in Polyethylene Glycol.

✍ Biswanath Das; Penagaluri Balasubramanyam; Gandolla Chinna Reddy; Nayaki Salvann 📂 Article 📅 2011 🏛 John Wiley and Sons ⚖ 33 KB 👁 1 views

ChemInform Abstract: One-Pot Synthesis o

ChemInform Abstract: One-Pot Synthesis of 2-Amino-4H-chromen-4-yl Phosphonate Derivatives Using β-Cyclodextrin as Reusable Catalyst in Water.

✍ S. Narayana Murthy; B. Madhav; V. Prakash Reddy; Y. V. D. Nageswar 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 34 KB 👁 1 views

ChemInform Abstract: Synthesis and Antim

ChemInform Abstract: Synthesis and Antimicrobial Screening of 4H-2-Acetylamido Furo[3,2-c]benzopyran-4-one, 11H-2,4-Dimethyl-3,4-dihydro-3-amino-4-hydroxy-pyrimido[3,2-d]furo [3,2-c]benzopyran-11-one and 4H-2-Acetyl-3-(3′-methyl-1′,2′,4′-triazol-4′-yl) Furo[3,2-c]benzopyran-4-one.

✍ V. V. Mulwad; A. S. Hegde 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB 👁 2 views

ChemInform Abstract: A Simple and Effici

ChemInform Abstract: A Simple and Efficient Synthesis of Novel N,N′-Bis (1H-Pyrrol-1-yl)-1- [2-(2-aryl-5-methyl-3-oxo-2,4-dihydro-3H-1,2,4-triazol-4-yl)ethyl] -1H-1,2,3-triazole-4,5-dicarboxamides.

✍ Prashant R. Latthe; Vinay A. Sunagar; Bharati V. Badami 📂 Article 📅 2008 🏛 John Wiley and Sons ⚖ 44 KB 👁 2 views

Al(H2PO4)3 as an Efficient and Reusable

Al(H2PO4)3 as an Efficient and Reusable Catalyst for One-pot Three-component Synthesis of α-Amino Phosphonates under Solvent-free Conditions

✍ Malek Taher Maghsoodlou; Sayyed Mostafa Habibi-Khorassani; Reza Heydari; Nouroll 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 57 KB 👁 1 views

ChemInform Abstract: Four-Component Cata

ChemInform Abstract: Four-Component Catalyst-Free Reaction in Water: Combinatorial Library Synthesis of Novel 2-Amino-4- (5-hydroxy-3-methyl-1H-pyrazol-4-yl)-4H-chromene-3-carbonitrile Derivatives.

✍ Kandhasamy Kumaravel; Gnanasambandam Vasuki 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 27 KB 👁 2 views