Abstract A new compound 1-(4-methoxyphenyl)-3-(pyridine-3-ylmethyl)thiourea was synthesized and structure of compound (3) was elucidated by FT-IR, 1 H-NMR, and mass spectrophotometer. The computational quantum chemical studies of compound (3) like, IR, UV, NBO analysis were performed by DFT with B3LYP exchange-correlation functional in combination with 6–311++G(d, p) basis sets. The compound (3) adopted
Facile synthesis of phthalidyl fused spiro thiohydantoins through silica sulfuric acid induced oxidative rearrangement of ninhydrin adducts of thioureas
作者:Subhro Mandal、Animesh Pramanik
DOI:10.1016/j.tet.2019.130817
日期:2020.1
A one-pot three-component sequential synthetic protocol produces structurally and biologically important phthalidyl fusedspiro N,N′-disubstituted thiohydantoins from readily available aromatic isothiocyanates, primary amines and ninhydrin. In this three-step synthesis while the initial two steps are catalyst-free, in the final step silica sulfuric acid (SSA) induces an oxidative rearrangement in [3