Phosphine-Catalyzed Synthesis of 3-Allyl-4-pyrones by the Tandem Reaction of Diynones and Allylic Alcohols

Author(s):  
Ya-Fang Ye ◽  
Wan-Wan Yang ◽  
Jing-Wen Zhang ◽  
Ji-Ya Fu ◽  
Jun-Yan Zhu ◽  
...  
2006 ◽  
Vol 12 (12) ◽  
pp. 3261-3274 ◽  
Author(s):  
David Cuperly ◽  
Julien Petrignet ◽  
Christophe Crévisy ◽  
René Grée

Author(s):  
Xin-Ming Xu ◽  
Ming Xie ◽  
Jiazhu Li ◽  
Mei-Xiang Wang

An exquisite Pybox/Cu(OTf)2-catalyzed asymmetric tandem reaction of tertiary enamides was developed, which enabled the expeditious synthesis of indolizino[8,7-b]indole derivatives in high yield, excellent enantioselectivity and diastereoselectivity.


2012 ◽  
Vol 2 (6) ◽  
pp. 48-48
Author(s):  
Y. M. Nandurkar Y. M. Nandurkar ◽  
◽  
B. B. Bahule B. B. Bahule
Keyword(s):  

2019 ◽  
Author(s):  
Ke-Yin Ye ◽  
Terry McCallum ◽  
Song Lin

Organic radicals are generally short-lived intermediates with exceptionally high reactivity. Strategically, achieving synthetically useful transformations mediated by organic radicals requires both efficient initiation and selective termination events. Here, we report a new catalytic strategy, namely bimetallic radical redox-relay, in the regio- and stereoselective rearrangement of epoxides to allylic alcohols. This approach exploits the rich redox chemistry of Ti and Co complexes and merges reductive epoxide ring opening (initiation) with hydrogen atom transfer (termination). Critically, upon effecting key bond-forming and -breaking events, Ti and Co catalysts undergo proton-transfer/electron-transfer with one another to achieve turnover, thus constituting a truly synergistic dual catalytic system.<br>


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