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Lal Dhar S. Yadav

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Featured researches published by Lal Dhar S. Yadav.

Journal of Chemical Research-s | 1997

A New Cyclisation of Sulfenylated Dimethyl Sulfoxide andThiosemicarbazone Adducts using Thionyl Chloride

Lal Dhar S. Yadav; Daya R. Pal

Adducts (4a–d) obtained by nucleophilic addition of sulfenylated dimethyl sulfoxide derivatives (2a,b) to thiosemicarbazones (3a,b) undergo a new intramolecular cyclisation, involving deoxygenative demethylation, to yield 5-sulfenylated 4-aryl-2-thiocarbamoyl-1,2,3-thiadiazolidines (7a–d) on treatment with thionyl chloride.

Journal of Chemical Research-s | 1998

A Novel, One-pot Synthesis of 2H-Benz[e]-1,3-oxazine-2-thiones†

Lal Dhar S. Yadav; Sandhya Saigal; Daya R. Pal

A novel, acid-catalysed cyclisation of salicylaldehyde thiosemicarbazones (1a–d) yields new 2H-benz[e]-1,3-oxazine-2-thiones (2a–d) in a one-pot procedure.

Journal of Agricultural and Food Chemistry | 1990

Cycloaddition of 4-amino-3-mercapto-1,2,4-triazole to heterocumulenes and antifungal activity of the resulting 1,2,4-triazolo[3,4-c]-1,2-dithia-4,5-diazines

Harendra Singh; Kripa N. Shukla; Rajesh Dwivedi; Lal Dhar S. Yadav

Journal of Agricultural and Food Chemistry | 1992

Synthesis of new fungicidal imidazo- and benzimidazo[2,1-b]-1,3-thiazinones involving ring transformation of 5-oxazolone derivatives

Lal Dhar S. Yadav; Anjum Vaish

Synthesis | 1992

A New Route for the Convenient Synthesis of 5-Acylamino-3,6-diarylperhydro-2- thioxo-1,3-thiazin-4-ones

Lal Dhar S. Yadav; Sangeeta Sharma

Journal of Agricultural and Food Chemistry | 1992

Chemoselective heterocyclizations of (4-oxo-2-thioxothiazolidin-5-yl)N-aryldithiocarbamates to antifungal 1,3-dithiolo-, 1,3-oxathiolo, and thiazolothiazoles

Lal Dhar S. Yadav; Rajani K. Tripathi; Rajesh Dwivedi; Harendra Singh

Journal of Agricultural and Food Chemistry | 1990

Ring transformation of Michael adducts of 4-benzylidene-5-oxazolones and 2-amino-1,3,4-thiadiazoles to antifungal 6,7-dihydro-5H-thiadiazolo[3,2-a]pyrimidin-5-ones

Harendra Singh; Lal Dhar S. Yadav; Kripa N. Shukla; Rajesh Dwivedi

Journal of Agricultural and Food Chemistry | 1990

[3+2]Cycloaddition of 1,3,4-oxadiazol-2-ylhydrazones to aryl isothiocyanates and fungitoxicity of the resulting thiadiazolidines

Atma R. Misra; Lal Dhar S. Yadav; Harendra Singh; Jagdamba P. Misra

Journal of Agricultural and Food Chemistry | 1992

Synthesis and fungitoxicity of rationally designed thiazolo-1,3-dithiins, -thiazines, and -oxathiins

Lal Dhar S. Yadav; Sangeeta. Sharma; Anjum Vaish

Journal of Agricultural and Food Chemistry | 1988

Ring transformation of Michael adducts of 4-benzylidene-5-oxazolones and 3-mercapto-s-triazoles to 2,3-dihydro-4H-s-triazolo[3,4-b][1,3]thiazin-4-ones with some antifungal activity

Lal Dhar S. Yadav; Atma R. Misra; Harendra Singh

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Sangeeta Sharma

Kurukshetra University

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