Annulation

Danheiser成环反应（Danheiser annulation），又称Danheiser TMS-环戊烯成环反应（Danheiser TMS-Cyclopentene annulation） α,β-不饱和酮与三烃基硅基（如三甲基硅基、三异丙基硅基）丙二烯在路易斯酸存在下发生反应，生成三烃基硅基环戊烯。

M. J. Doty; S. Cacchi. Synthesis of indenones via palladium-catalyzed annulation of internal alkynes. J. Am. Chem. Soc. 1993, 58 (17): 4579–4583. doi:10

Oble, Giovanni Poli. Palladium-Catalyzed [3 + 2]-C–C/N–C Bond-Forming Annulation. Organic Letters. 2018-07-06, 20 (13): 4057–4061 [2021-11-22]. ISSN 1523-7060

1021/ol101760m. Lingyu Huang; et al. Decarbonylative/decarboxylative [4 + 2] annulation of phthalic anhydrides and cyclic iodoniums towards triphenylenes. Org

  Ankita Rai, Vijai K. Rai, Atul K. Singh, Lal Dhar S. Yadav. [2 + 2] Annulation of Aldimines with Sulfonic Acids: A Novel One-Pot cis-Selective Route