The pyrrole structure is a pivotal unit of many natural products, bioactive compounds, and organic materials. Pyrrole derivatives are commonly used as intermediates in the synthesis of various agrochemicals, pharmaceuticals, dyes, and other synthetic organic compounds. In organic synthesis, silver catalysis has been of great interest and has spread widely due to unique reactivity, selectivity, stability, and recyclability in catalytic reactions. Over the past decade, numerous synthetic strategies have been established for the facile and effective synthesis of pyrrole derivatives through silver catalysis. This review focuses exclusively on the synthesis of pyrroles via silver catalysis, covering literature until the middle of 2020.

Multicomponent reactions have received a lot of attention as a potential method for the synthesis of a wide range of complex organic molecules. Rapid development is being made in this field because of its importance in the chemical, pharmaceutical, biological, and industrial areas. Nickel is a versatile catalyst that can be used in a variety of synthetic transformations. In this review, we discuss the advancements in the field of Nickelcatalyzed multicomponent reactions, covering the literature up to 2021.