@article { ISI:000252219700011, title = {Efficient and practical total synthesis of (+/-)-alpha-cuparenone}, journal = {Synthesis-Stuttgart }, number = {24}, year = {2007}, month = {DEC}, pages = {3827-3830}, publisher = {GEORG THIEME VERLAG KG}, type = {Article}, address = {RUDIGERSTR 14, D-70469 STUTTGART, GERMANY}, abstract = {

A one-pot cyclopentannulation approach as the key step for the total synthesis of (+/-)-alpha-cuparenone is described.

}, keywords = {Alkylation, annulation, hydroboration-oxidation, reduction}, issn = {0039-7881}, doi = {10.1055/s-2007-990899}, author = {Chavan, Subhash P. and Dhawane, Abasaheb N. and Kalkote, Uttam R.} } @article {45733, title = {Unified approach to fused and spirocyclic oxindoles through lewis-acid-promoted opening of spiroepoxyoxindoles with allylsilanes: application to the formal synthesis of (+/-)-physovenine}, journal = {European Journal of Organic Chemistry}, year = {2017}, month = {MAY }, pages = {2603-2609}, type = {Article}, abstract = {

A protocol for the construction of oxindoles containing all-carbon quaternary centres in a highly regioselective manner has been developed. The reaction involves opening of spiroepoxyoxindoles with allylsilanes to give Hosomi-Sakurai-type products as well as new silicon-containing spirocyclic oxindoles. A formal synthesis of (+/-)-physovenine was accomplished in five steps using this protocol.

}, keywords = {alkaloids, Allylation, annulation, Lewis acids, spiro compounds}, issn = {1434-193X}, doi = {10.1002/ejoc.201700259}, author = {Sharma, Brijesh M. and Yadav, Mahesh and Gonnade, Rajesh G. and Kumar, Pradeep} } @article {44238, title = {Transition-metal-catalyzed reactions involving arynes}, journal = {Synthesis-Stuttgart}, volume = {50}, year = {2018}, month = {JAN}, pages = {1-16}, type = {Article}, abstract = {

The plethora of transformations attainable by the transition-metal-catalyzed reactions of arynes has found immense contemporary interest in the scientific community. This review highlights the scope and importance of transition-metal-catalyzed aryne reactions in the field of synthetic organic chemistry reported to date. It covers transformations achieved by the combination of arynes and various transition metals, which provide a facile access to a biaryl motif, fused polycyclic aromatic compounds, different novel carbocycles, various heterocycles, and complex natural products. 1 Introduction 2 Insertion of Arynes 3 Annulation of Arynes 4 Cycloaddition of Arynes 5 Multicomponent Reactions of Arynes 6 Miscellaneous Reactions of Arynes 7 Total Synthesis of Natural Products Using Arynes 8 Conclusion

}, keywords = {annulation, arynes, Cycloaddition, Insertion, multicomponent, Natural products, Transition Metal}, issn = {0039-7881}, doi = {10.1055/s-0036-1589517}, author = {Dhokale, Ranjeet A. and Mhaske, Santosh B.} }