Catalytic asymmetric [3+2] cycloaddition of isomünchnones with methyleneindolinones

2021 ◽  
Author(s):  
Kaixuan Wang ◽  
Chaoran Xu ◽  
Xinyue Hu ◽  
Yuqiao Zhou ◽  
Lili Lin ◽  
...  
Keyword(s):  
Carbonyl Group ◽  
Catalytic Asymmetric

A efficient enantioselective [3+2] cycloaddition of methyleneindolinones with isomünchnones which generate by in situ intramolecular addition of carbonyl group to rhodium carbenes is realized with a chiral N,N’-dioxide/Zn(II) complex as...

scholarly journals Synthesis of a sucrose dimer with enone tether; a study on its functionalization

2014 ◽  
Vol 10 ◽  
pp. 1246-1254 ◽  
Author(s):  
Zbigniew Pakulski ◽  
Norbert Gajda ◽  
Magdalena Jawiczuk ◽  
Jadwiga Frelek ◽  
Piotr Cmoch ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Double Bond ◽  
Carbonyl Group ◽  
Osmium Tetroxide ◽  
Cd Spectroscopy ◽  
Allylic Alcohol ◽  
Circular Dichroïsm

The reaction of appropriately functionalized sucrose phosphonate with sucrose aldehyde afforded a dimer composed of two sucrose units connected via their C6-positions (‘the glucose ends’). The carbonyl group in this product (enone) was stereoselectively reduced with zinc borohydride and the double bond (after protection of the allylic alcohol formed after reduction) was oxidized with osmium tetroxide to a diol. Absolute configurations of the allylic alcohol as well as the diol were determined by circular dichroism (CD) spectroscopy using the in situ dimolybdenum methodology.

Catalytic Asymmetric Construction of Pyrroloindolines via an in Situ Generated Magnesium Catalyst

2014 ◽  
Vol 17 (2) ◽  
pp. 176-179 ◽  
Author(s):  
Linqing Wang ◽  
Dongxu Yang ◽  
Fengxia Han ◽  
Dan Li ◽  
Depeng Zhao ◽  
...  
Keyword(s):  
Catalytic Asymmetric

ChemInform Abstract: Catalytic Asymmetric Addition of Meldrum′s Acid, Malononitrile, and 1,3-Dicarbonyls to ortho-Quinone Methides Generated in situ under Basic Conditions.

ChemInform ◽  
2015 ◽  
Vol 46 (35) ◽  
pp. no-no
Author(s):  
Lorenzo Caruana ◽  
Martina Mondatori ◽  
Vasco Corti ◽  
Sara Morales ◽  
Andrea Mazzanti ◽  
...  
Keyword(s):  
Quinone Methides ◽  
Asymmetric Addition ◽  
Catalytic Asymmetric

ChemInform Abstract: Catalytic Asymmetric Epoxidation and Kinetic Resolution: Modified Procedures Including in situ Derivatization.

ChemInform ◽  
1988 ◽  
Vol 19 (1) ◽  
Author(s):  
Y. GAO ◽  
R. M. HANSON ◽  
J. M. KLUNDER ◽  
S. Y. KO ◽  
H. MASAMUNE ◽  
...  
Keyword(s):  
Kinetic Resolution ◽  
Asymmetric Epoxidation ◽  
Catalytic Asymmetric ◽  
In Situ Derivatization

Catalytic Asymmetric (4+3) Cyclizations of In Situ Generated ortho ‐Quinone Methides with 2‐Indolylmethanols

2019 ◽  
Vol 131 (26) ◽  
pp. 8795-8800 ◽  
Author(s):  
Meng Sun ◽  
Chun Ma ◽  
Si‐Jia Zhou ◽  
Sai‐Fan Lou ◽  
Jian Xiao ◽  
...  
Keyword(s):  
Quinone Methides ◽  
Catalytic Asymmetric

Catalytic Asymmetric [3 + 2] Cyclization Reactions of 3-Isothiocyanato Oxindoles and Alkynyl Ketones Via an in Situ Generated Magnesium Catalyst

2015 ◽  
Vol 17 (17) ◽  
pp. 4260-4263 ◽  
Author(s):  
Linqing Wang ◽  
Dongxu Yang ◽  
Dan Li ◽  
Xihong Liu ◽  
Qian Zhao ◽  
...  
Keyword(s):  
Cyclization Reactions ◽  
Catalytic Asymmetric
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