Chiral seven-membered ring systems such as seven-membered carbocycles and
heterocycles are widely found in natural products and pharmaceuticals. Therefore, the …

This Review summarizes the development of catalytic asymmetric dearomatization (CADA)
reactions. The CADA reactions discussed herein include oxidative dearomatization …

Evolution in the field of the total synthesis of natural products has led to exciting
developments over the last decade. Numerous chemoselective and enantioselective …

This review highlights a number of additives that can be used to make asymmetric reactions
perfect. Without changing other reaction conditions, simply adding additives can lead to …

The addition of a 1, 3-dipole to an alkene or alkyne is a prominent transformation in organic
synthesis. 1 Over the past two decades the intense study of enantioselective 1, 3-dipolar …

Asymmetric catalysis with chiral metal complexes has received considerable attention in
recent years, and its contribution to the art of organic synthesis has become of leading …

In the past four decades, allenes have progressively risen from an unenviable status of
being a structural curiosity to becoming one of the most powerful and versatile synthetic …

Small-molecule dual hydrogen-bond (H-bond) donors such as ureas, thioureas,
squaramides, and guanidinium ions enjoy widespread use as effective catalysts for …

Cycloaddition reactions between oxyallyl cations and alkenes are important transformations
for the construction of ring systems. Although (4+ 3) cycloaddition reactions of oxyallyl …

This feature review describes the development of catalytic [4+ 2] and [4+ 3] cycloadditions of
allenes, as efficient and practical methodologies for assembling six and seven-membered …