Rosy Pradhan

TL;DR: Synthesis of spiro and hetero spiro compounds has been reviewed on the basis of a synthon approach along with their biological activities and photochromism in this paper, where the synthesis process is described in detail.

TL;DR: In this article, the reaction of thiobarbituric acid with different diarylidene ketones yields the spiro compounds 2a-c. The structures of the compounds are ascertained from their analytical and spectral data.

TL;DR: Synthesis of spiro and hetero spiro compounds has been reviewed on the basis of a synthon approach along with their biological activities and photochromism in this paper, where the synthesis process is described in detail.

TL;DR: Barbituric acid 2 upon Michael addition with dibenzal acetones 1a-c afforded the corresponding diazaspiro derivatives 3a−c. The base-catalyzed condensation of 3a+c with various aromatic aldehydes produces diarylidine derivatives 4a−l.