A visible-light metal-free photocatalytic synthesis of 3-position substituted 3,4-dihydroisoquinolin-1(2H)-one derivatives under mild conditions in moderate to good yields is described. EosinY Na, an organic dye, which is of low cost and has good availability, is used as the photocatalyst. A wide range of substrates are tolerated and the gram-scale reaction can also proceed smoothly. Mechanistic studies
Microwave-Assisted Synthesis of Heterocycles by Rhodium(III)-Catalyzed Annulation of <i>N</i>
-Methoxyamides with α-Chloroaldehydes
作者:Ji-Rong Huang、Carsten Bolm
DOI:10.1002/anie.201710776
日期:2017.12.11
α‐Chloroaldehydes have been used as alkyne equivalents in rhodium‐catalyzed syntheses of isoquinolones and 3,4‐dihydroisoquinolins starting from N‐methoxyamides. Compared to the existing technology, a complementary regioselectivity is achieved. Mechanistic investigations have been performed, and it was found that steric effects of both substrate and additive determine the product selectivity. Various
Rhodium-Catalyzed Annulative Coupling Using Vinylene Carbonate as an Oxidizing Acetylene Surrogate
作者:Koushik Ghosh、Yuji Nishii、Masahiro Miura
DOI:10.1021/acscatal.9b04254
日期:2019.12.6
Transition-metal-catalyzed C–Hactivation and subsequent oxidative cyclization with alkynes has been a powerful tool for the synthesis of polycyclic aromatic compounds. Despite the substantial progress in this field, it is still a significant challenge to establish synthetic methodologies for the construction of nonsubstituted vinylene-fused aromatics. We herein report a Rh(III)-catalyzed C–H/N–H annulation with vinylene
One-pot cascade synthesis of N-methoxyisoquinolinediones via Rh(<scp>iii</scp>)-catalyzed carbenoid insertion C–H activation/cyclization
作者:Jingjing Shi、Jie Zhou、Yunnan Yan、Jinlong Jia、Xuelei Liu、Huacan Song、H. Eric Xu、Wei Yi
DOI:10.1039/c4cc08407a
日期:——
new, mild and versatile method for one-pot cascade synthesis of diverse N-methoxyisoquinolinediones via Rh(III)-catalyzedregioselectivecarbenoidinsertionC-H activation/cyclization of N-methoxybenzamides with alpha-diazotized Meldrum'sacid has been achieved. Extension of the developed Rh(III) catalysis for building new analogs of the marketed drug Edaravone has also been demonstrated.
The present invention relates to a novel class of nuclear receptor binding agents (NRBAs). The NRBAs are applicable for use in the prevention and/or treatment of a variety of diseases and conditions including prevention and treatment of cancers such as prostate and breast cancer, osteoporosis, hormone-related diseases, inflammatory diseases, oxidative stress related disorders such as Parkinson's and stroke, neurological disorders, ophthalamic disorders, cardiovascular disease, and obesity.