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Dive into the research topics where A. U. Vinod is active.

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Featured researches published by A. U. Vinod.


Tetrahedron Letters | 2000

The reaction of cyclohexyl isocyanide and dimethyl acetylenedicarboxylate with o- and p-quinones: a novel synthesis of iminolactones

Vijay Nair; A. U. Vinod; J. Somarajan Nair; A. R. Sreekanth; Nigam P. Rath

The 1:1 intermediate generated by the addition of cyclohexyl isocyanide to dimethyl acetylenedicarboxylate is trapped by quinones to yield iminolactones in good yields.


Tetrahedron Letters | 2002

A facile three-component reaction involving [4+1] cycloaddition leading to furan annulated heterocycles

Vijay Nair; Rajeev S. Menon; A. U. Vinod; S. Viji

The in situ generated quinone methides from 4-hydroxycoumarin and 4-hydroxy-6-methylpyrone with various aldehydes underwent facile reaction with cyclohexyl isocyanide to produce furocoumarins in good yields. Quinone methides from 4-hydroxy-1-methylquinolinone afforded furoquinolones. The reaction presumably occurs via a [4+1] cycloaddition followed by a [1,3] H shift.


Tetrahedron Letters | 2001

Dipolar cycloaddition of carbonyl ylides to para-quinoneimides: a facile route to bicyclo[3.2.1] and [2.2.1] systems☆

Vijay Nair; Cheruvallil S. Rajesh; R. Dhanya; A. U. Vinod

Five- and six-membered carbonyl ylides formed from rhodium carbenoids add to p-quininoneimides to afford bicyclic compounds in good yields.


Chemical Communications | 2000

The reaction of cyclohexyl isocyanide and dimethyl acetylenedicarboxylate with aldehydes: a novel synthesis of 2-aminofuran derivatives

Vijay Nair; A. U. Vinod

The 1:1 intermediate generated by the additon of cyclohexyl isocyanide to dimethyl acetylenedicarboxylate is trapped by aldehydes to yield 2-aminofuran derivatives in good yields.


Journal of The Chemical Society-perkin Transactions 1 | 1997

Triphenylphosphine promoted addition of dimethyl acetylenedicarboxylate to 1,2-benzoquinones: facile synthesis of novel γ-spirolactones

Vijay Nair; J. Somarajan Nair; A. U. Vinod; Nigam P. Rath

The addition of dimethyl acetylenedicarboxylate to o-quinones in the presence of triphenylphosphine leading to highly functionalised γ-spirolactones is reported.


Tetrahedron Letters | 2001

Corrigendum to “Dipolar cycloaddition of carbonyl ylides to para-quinoneimides: a facile route to bicyclo[3.2.1] and [2.2.1] systems”: [Tetrahedron Letters 42 (2001) 2045–2046]

Vijay Nair; Cheruvallil S. Rajesh; R. Dhanya; A. U. Vinod

The authors regret that an error occurred in the assignment of the stereochemistry for the products 3a and 5(a–c) in Figure 1 and Schemes 1 and 3. The correct assignments are shown below.


ChemInform | 1998

Novel cycloaddition reactions ofo-benzoquinones and related chemistry

Vijay Nair; Sasi Kumar; G. Anilkumar; G Anilkumar; K. V. Radhakrishnan; J. Somarajan Nair; Davis Maliakal; K. C. Sheela; Bini Mathew; P.M Treesa; A. U. Vinod; Jaya Prabhakaran; V. Sheeba; Abraham Thomas

Abstracto-Benzoquinone is a unique conjugated 1,2-dione that can exhibit diverse cycloaddition modes, participating either as carbodiene, heterodiene, dienophile or heterodienophile. With electron-rich dienes, benzodioxins are formed in excellent yields. Pentafulvenes including 6-vinylfulvenes normally give rise to bicyclo [2.2.2] adducts. Exceptions are observed with cycloalkylfulvenes where the fulvenes undergo rearrangement to cyclopentadiene derivatives prior to cycloaddition, resulting in benzodioxins.o-Benzoquinones participate as dipolarophiles on treatment with nitrile oxides and carbonyl ylides yielding highly oxygenated novel spiro compounds. Triphenylphosphine catalyzed addition of DMAD too-benzoquinones afforded another class of novel spirolactones. The bicyclo [2.2.] octene diones derived fromo-benzoquinones undergo a number of synthetically useful transformations.


Accounts of Chemical Research | 2003

Strategies for Heterocyclic Construction via Novel Multicomponent Reactions Based on Isocyanides and Nucleophilic Carbenes

Vijay Nair; Cheruvallil S. Rajesh; A. U. Vinod; S. Bindu; A. R. Sreekanth; Joseph Swaroop Mathen; Lakshmi Balagopal


Journal of Organic Chemistry | 2001

A novel synthesis of 2-aminopyrroles using a three-component reaction

Vijay Nair; A. U. Vinod; Cheruvallil S. Rajesh


Journal of Organic Chemistry | 2005

6-O-Benzyl- and 6-O-Silyl-N-acetyl-2-amino-2-N,3-O-carbonyl-2-deoxyglucosides: Effective Glycosyl Acceptors in the Glucosamine 4-OH Series. Effect of Anomeric Stereochemistry on the Removal of the Oxazolidinone Group

David Crich; A. U. Vinod

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Vijay Nair

National Institute for Interdisciplinary Science and Technology

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J. Somarajan Nair

Council of Scientific and Industrial Research

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Cheruvallil S. Rajesh

Council of Scientific and Industrial Research

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David Crich

Wayne State University

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Rajeev S. Menon

Council of Scientific and Industrial Research

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A. R. Sreekanth

Council of Scientific and Industrial Research

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Bini Mathew

Council of Scientific and Industrial Research

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Joseph Swaroop Mathen

Council of Scientific and Industrial Research

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K. C. Sheela

Council of Scientific and Industrial Research

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K. V. Radhakrishnan

Council of Scientific and Industrial Research

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