An efficient synthetic approach has been developed for the construction of the
spirocyclopentanone skeleton via a phosphine‐catalyzed [3+ 2] annulation reaction. With …

A novel bifunctional phosphine-catalyzed reaction was developed. Cross-Rauhut–Currier,
Michael and aldol reactions were successfully combined into a domino process. This …

A direct entry to spirocycles with low to moderate regioselectivity was achieved by
triphenylphosphine-catalyzed [3+ 2]-cycloaddition of active ex o-methylenecycles (1) and …

A convenient and efficient phosphine-catalyzed sequential annulation domino reaction
between dienic sulfones and MBH carbonates has been developed. In the presence of 20 …

Push‐over: A novel domino reaction of activated conjugated dienes and
methyleneindolinones incorporates a phosphine‐catalyzed intermolecular Rauhut–Currier …

ipso-Annulation represents an attractive approach to synthesize a variety of spirocyclic
compounds having a quaternary carbon center. Furthermore, these compounds also serve …

A new method for methylenecyclopentane annulation via formal [3+ 2] cycloaddition reaction
was developed. Under the influence of Lewis acids, enol ethers and vinylsulfides were …

A novel phosphine-catalyzed domino reaction of salicyl N-thiophosphinyl imines and allylic
carbonates was developed. The allylic carbonate, in this reaction, serves as a new kind of 1 …

Efficient synthesis of the cyclopentane ring has been the target of a large number of
methodological studies. 1· 2 Among them, the [3+ 2] cycloaddition which has the advantage …

Five-membered carbocycles are structural motifs often found in natural products and
biologically active molecules (see Figure 1).[1] Among this group of compounds, highly …