Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Kou-Sen Cao"'
Publikováno v:
Synthesis. 49:3670-3675
A first example of boronic acid catalyzed intermolecular aza-Piancatelli rearrangement to access a wide range of trans-4,5-disubstituted cyclopentenones is described. The catalytic system can also be extended to intramolecular aza-Piancatelli rearran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59f57c562667f9303aaa67c103fecbcd
https://doi.org/10.1055/s-0036-1589040
https://doi.org/10.1055/s-0036-1589040
Publikováno v:
Chemical Communications. 53:3737-3740
The first highly enantioselective catalytic protocol for selective manipulation of tetrol benzylidene acetals through chiral phosphoric acid mediated oxidative desymmetrization is reported. This efficient approach provides a general access to vicinal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02fcf0b3a680ff71b02d5596f28b49d3
https://doi.org/10.1039/c7cc00457e
https://doi.org/10.1039/c7cc00457e
Autor:
Wen-Hua Zheng, Kou-Sen Cao
Publikováno v:
Tetrahedron: Asymmetry. 26:1150-1155
The first non-enzymatic desymmetrization of prochiral allenic diols via cooperative binary catalysis of Pd(OAc) 2 and ( R )-STRIP has been reported. This method allows easy access to a series of optically active disubstituted dihydrofurans through pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eee87d3f44d1f68fe6df76fcd1a57fe6
https://doi.org/10.1016/j.tetasy.2015.08.010
https://doi.org/10.1016/j.tetasy.2015.08.010
Publikováno v:
Organic & Biomolecular Chemistry. 13:6449-6452
The first example of arylboronic acid catalyzed [4 + 3] cycloaddition reaction is reported. 3,5-Bis-(trifluoromethyl) phenylboronic acid is shown to be the best catalyst in this reaction. The method has also enabled the preparation of cyclohepta[b]be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14dbe394048253a4c22311b30720e74e
https://doi.org/10.1039/c5ob00653h
https://doi.org/10.1039/c5ob00653h
Autor:
Yong Liang, Kendall N. Houk, Shan-Shui Meng, Xing-Bang Lin, Kou-Sen Cao, Lufeng Zou, Wen-Hua Zheng, Hui Yang
Publikováno v:
Journal of the American Chemical Society. 136:12249-12252
A highly enantioselective catalytic protocol for the desymmetrization of a wide variety of 2-substituted and 2,2-disubstituted 1,3-diols is reported. This reaction proceeds through the formation of an "ortho ester" intermediate via oxidation of 1,3-d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89660cd27509b465151e369d82c0e336
https://doi.org/10.1021/ja507332x
https://doi.org/10.1021/ja507332x
Autor:
Wen-Hua Zheng, Kou-Sen Cao
Publikováno v:
ChemInform. 47
The first non-enzymatic desymmetrization of prochiral allenic diols via cooperative binary catalysis of Pd(OAc) 2 and ( R )-STRIP has been reported. This method allows easy access to a series of optically active disubstituted dihydrofurans through pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cef83f56d853b07b7a48135d90aa9a6d
https://doi.org/10.1002/chin.201614028
https://doi.org/10.1002/chin.201614028
Publikováno v:
Inorganica Chimica Acta. 378:224-230
Six novel chiral double salts (1–6) composed of d -(+)-camphoric diammonium (LH2) and transition-metal sulfates, formulated as {[M(SO4)2(H2O)4](LH2)}·2H2O [M = Fe(II), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II)], have been prepared and fully charac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a056c291a26adae8266a153b2fd233aa
https://doi.org/10.1016/j.ica.2011.09.015
https://doi.org/10.1016/j.ica.2011.09.015
Publikováno v:
Synthesis; 2017, Vol. 49 Issue 16, p3670-3675, 6p
Publikováno v:
ChemInform. 46
3,5-Bis(trifluoromethyl)benzeneboronic acid proves to be an efficient catalyst for the cycloaddition of allylic cations with various dienes under mild reaction conditions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a9343e4ce868908ccd742365530c5df
https://doi.org/10.1002/chin.201540035
https://doi.org/10.1002/chin.201540035
Autor:
Kendall N. Houk, Wen-Hua Zheng, Xing-Bang Lin, Kou-Sen Cao, Shan-Shui Meng, Lufeng Zou, Yong Liang, Hui Yang
Publikováno v:
ChemInform. 46
This highly enantioselective reaction proceeds through formation of an “ortho ester” intermediate via oxidation of the 1,3-diol benzylidene acetal by dimethyldioxirane and a subsequent proton transfer catalyzed by chiral phosphoric acids (CPA).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c04f0098d1db96ec69d654901518f98
https://doi.org/10.1002/chin.201512029
https://doi.org/10.1002/chin.201512029