Efficient Palladium‐Catalyzed Aerobic Oxidative Carbocyclization to Seven‐Membered Heterocycles
作者:Jie Liu、Jan‐E. Bäckvall
DOI:10.1002/chem.202004265
日期:2020.12
The use of molecular oxygen in palladium‐catalyzed oxidation reactions is highly widespread in organic chemistry. However, the direct reoxidation of palladium by O2 is often kinetically unfavored, thus leading the deactivation of the palladiumcatalyst during the catalytic cycle. In the present work, we report a highly selective palladium‐catalyzed carbocyclization of bisallenes to seven‐membered heterocycles
One-Pot Construction of Aza- or Oxa-Bridged Benzocycloheptanes from Readily Available 2,3-Allenyl Malonates or 2,3-Allenols and<i>o</i>-Iodobenzaldehyde or Imine
作者:Qiankun Li、Xinpeng Jiang、Chunling Fu、Shengming Ma
DOI:10.1021/ol102811x
日期:2011.2.4
A Pd(OAc)(2)-catalyzed reaction of 2,3-alkadienyl malonates or 2,3-allenols with o-lodobenzaldehyde or Its N-tosyl imine occurred smoothly In MeCN at 80 degrees C to form the oxa- or aza-bridged benzocycloheptane derivatives with Important biological potential. With the optically active 2,3-allenols, the absolute configurations of all the three chiral centers have been conveniently established.
Gelin,S. et al., Comptes Rendus des Seances de l'Academie des Sciences, Serie C: Sciences Chimiques, 1968, vol. 267, p. 250 - 252
作者:Gelin,S. et al.
DOI:——
日期:——
Michel,E.; Troyanowsky,C., Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1964, vol. 258, p. 3048 - 3050