Copper‐Catalyzed Formal [2+2+1] Heteroannulation of Alkenes, Alkylnitriles, and Water: Method Development and Application to a Total Synthesis of (±)‐Sacidumlignan D
作者:Tu M. Ha、Claire Chatalova‐Sazepin、Qian Wang、Jieping Zhu
DOI:10.1002/anie.201604528
日期:2016.8
A copper‐catalyzed three‐component reaction of alkenes, alkylnitriles, and water affords γ‐butyrolactones in good yields. The domino process involves an unprecedented hydroxy‐cyanoalkylation of alkenes and subsequent lactonization with the creation of three chemical bonds and a quaternary carbon center. The synthetic potential of this novel [2+2+1] heteroannulation reaction was illustrated by a concise
Obata, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1953, vol. 73, p. 1298
作者:Obata
DOI:——
日期:——
Yukhno, F. A.; Bikkulov, A. Z.; Yukhno, G. F., Journal of applied chemistry of the USSR, 1982, vol. 55, # 2, p. 377 - 380
作者:Yukhno, F. A.、Bikkulov, A. Z.、Yukhno, G. F.
DOI:——
日期:——
ZnI<sub>2</sub>/Zn(OTf)<sub>2</sub>-TsOH: a versatile combined-acid system for catalytic intramolecular hydrofunctionalization and polyene cyclization
作者:Ting-Hung Chou、Bo-Hung Yu、Rong-Jie Chein
DOI:10.1039/c9cc07242j
日期:——
combined-acid system using a zinc(II) salt [ZnI2 or Zn(OTf)2] and p-toluene sulfonic acid (TsOH) was investigated for catalytic cationic cyclizations, including intramolecular hydrocarboxylation, hydroalkoxylation, hydroamination, hydroamidation, hydroarylation and polyenecyclizations. This reaction provides easy access to five- and six-membered O- and N-containing saturated heterocyclic compounds, tetrahydronaphthalene