A. U. Vinod
Council of Scientific and Industrial Research
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Publication
Featured researches published by A. U. Vinod.
Tetrahedron Letters | 2000
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
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
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
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
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
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
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
Vijay Nair; Cheruvallil S. Rajesh; A. U. Vinod; S. Bindu; A. R. Sreekanth; Joseph Swaroop Mathen; Lakshmi Balagopal
Journal of Organic Chemistry | 2001
Vijay Nair; A. U. Vinod; Cheruvallil S. Rajesh
Journal of Organic Chemistry | 2005
David Crich; A. U. Vinod
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National Institute for Interdisciplinary Science and Technology
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