Synthesis of Highly Oxygenated Carbocycles by Stereoselective Coupling of Alkynes to 1,3- and 1,4-Dicarbonyl Systems.
Synthesis of Highly Oxygenated Carbocycles by Stereoselective Coupling of Alkynes to 1,3- and 1,4-Dicarbonyl Systems.
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DOI:
10.1021/jacs.7b06286
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发表时间:
2017-09-13
影响因子:
15
通讯作者:
Micalizio GC
中科院分区:
文献类型:
--
作者:
Kier MJ;Leon RM;O'Rourke NF;Rheingold AL;Micalizio GC
Densely substituted and highly oxygenated carbocycles are challenging targets for synthesis. In particular, those possessing numerous contiguous, fully substituted carbon atoms (i.e., tertiary alcohols and quaternary centers) are often not accessible in a direct fashion, necessitating the strategic decoupling of ring-formation from the establishment of functionality about the system. Here, we describe an approach to the construction of highly oxygenated mono-, di-, and polycyclic carbocycles from the reaction of disubstituted alkynes with β- or γ-dicarbonyl systems. These processes embrace a variant of metallacycle-mediated annulation chemistry where initial alkyne–carbonyl coupling is followed by a second, now intramolecular, stereoselective C–C bond-forming event. In addition to revealing the basic reactivity pattern in intermolecular settings, we demonstrate that this class of reactivity is quite powerful in a fully intramolecular context and, when terminated by a stereoselective oxidation process, can be used to generate polycyclic systems containing a fully substituted and highly oxygenated five-membered ring.
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影响因子:
64.8
作者:
Chen, Ke;Baran, Phil S.
通讯作者:
Baran, Phil S.
DOI:
10.1126/science.aag1028
发表时间:
2016-08-26
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Chuang KV;Xu C;Reisman SE
通讯作者:
Reisman SE
影响因子:
1.8
作者:
Akasaka, F;Shiono, Y;Ikeda, M
通讯作者:
Ikeda, M
影响因子:
2.1
作者:
Chai, Xing-Yun;Bai, Chang-Cai;Tu, Peng-Fei
通讯作者:
Tu, Peng-Fei
影响因子:
15
作者:
Kelly, AR;Lurain, AE;Walsh, PJ
通讯作者:
Walsh, PJ