Synthesis of heterocycles via enamines. Part 12. Intramolecular additions of nucleophiles to 1,4-dihydropyrimidine-2(3H)-thione derivatives: single-step synthesis of condensed heterocyclic compoundsHarjit Singh, Subodh Kumar|Journal of the Chemical Society Perkin Transactions 1|1987Cited by 22
Heterocyclic transformations. Part 7. Unprecedented transformations of 1,3-dialkyl-5-formyluracils to 1,3-dialkyl-7-hydroxyquinazolinesHarjit Singh, Subodh Kumar, Swapandeep Singh Chimni et al.|Journal of the Chemical Society Perkin Transactions 1|1995Cited by 5
Heterocyclic transformations. Part 3. Thiolate ion-induced transformations of 6-methyl-1,3-oxazine-2,4(3H)-diones to 3-(alkyl/arylthio)but-2-enamidesSubodh Kumar, Harjit Singh, Swapandeep Singh Chimni|Journal of the Chemical Society Perkin Transactions 1|1991Cited by 4