Molecular iodine-catalyzed one-pot synthesis of 4-substituted-1,4-dihydropyridine derivatives via Hantzsch reaction

Stereoselective Three-Component Synthesis of trans-endo-Decahydroquinolin-4-one Derivatives from Aldehydes, Aniline, and Acetylcyclohexene

The diastereoselective synthesis of trans-endo-decahydroquinolin-4-one (4) via a three-component reaction of aldehydes (1), anilines (2), and 1-acetylcyclohexene (3) in the presence of iodine in a one-pot reaction at room temperature is described. The short reaction time, easy workup, excellent yield, and mild reaction conditions make this novel annulation strategy both practical and attractive.

A facile and highly efficient route to α-amino phosphonates via three-component reactions catalyzed by Mg(ClO4)2or molecular iodine

Three-component reactions of aldehydes, amines, and diethyl phosphite catalyzed by Mg(ClO4)2 or molecular iodine afforded the corresponding alpha-amino phosphonates in excellent yields under mild reaction conditions.

An Efficient One-Pot Synthesis of Polyhydroquinolines at Room Temperature Using HY-Zeolite

An efficient one-pot synthesis of polyhydroquinolines by four-component coupling reactions of aldehydes, ethyl acetoacetate, dimedone and ammonium acetate in the presence of HY-zeolite at ambient temperature has been achieved. The conversions took shorter times to form the products in excellent yields. HY-zeolite can be recovered and reused.

Molecular iodine: a highly efficient catalyst in the synthesis of quinolinesvia Friedländer annulation

A mild and efficient route for the synthesis of quinolines and polycyclic quinolines via Friedländer annulation, utilizing molecular iodine (1 mol%) as a new catalyst, is described.