The development of efficient strategies for constructing oxo-heterocyclic architectures is a highly significant topic in modern synthetic chemistry,due to their wide existence in plenty of natural products,medical and agricultural chemicals[1-4].It is well-known that selectivity,especially stereoselectivity,still lags largely behind many precedent endeavors,which stimulates the synthetic community to search for more efficient and selective methods for oxo-heterocycle synthesis.In this context,2-alkylidenetrimethylene carbonates(ADTMCs)that were first reported by Tsuji and co-workers[5]in 1984 were applied to the Pd-catalyzed cycloaddition with isocyanates by Hayashi and co-workers[6]in 2011(Fig.1a).While,in this work the selectiv-ity between 5-or 6-membered cyclic products relies on the alkyl or aryl substituents on the nitrogen atom.In 2019,Liu,Zhang and co-workers[7]applied ADTMCs to the Pd-catalyzed[4+2]cycloaddition with[60]fullerene intelligently,affording[60]fullerene-fused pyrans in good yields.In 2020,Shibata and co-workers[8]disclosed a Pd-catalyzed[5+4]cycloaddition of ADTMCs with isatins and their analogs to access 9-membered heterocycles.Despite these impressive advances,usually only racemic oxo-heterocycles can be prepared and enantio-control still remains a challenge for ADTMCs-involved cycloaddition chemistry[9].