Brønsted Base-Catalyzed Transformation of α,β-Epoxyketones Utilizing [1,2]-Phospha-Brook Rearrangement for the Synthesis of Allylic Alcohols Having a Tetrasubstituted Alkene Moiety
stereoselective transformation of α,β-epoxyketones into alkenylphosphates having a hydroxymethyl group on the β-carbon was established by utilizing the [1,2]-phospha-Brook rearrangement under Brønsted base catalysis. The reaction involves the catalytic generation of an α-oxygenated carbanion located at the α-position of an epoxide moiety through the [1,2]-phospha-Brook rearrangement and the following
Kinetic Resolution of Aryl Alkenylcarbinols Catalyzed by Fc-PIP
作者:Bin Hu、Meng Meng、Shanshan Jiang、Weiping Deng
DOI:10.1002/cjoc.201200410
日期:2012.6
An effective kineticresolution of a variety of arylalkenylcarbinolscatalyzed by nonenzymatic acyl transfer catalyst Fc‐PIP was developed, affording corresponding unreacted alcohols in good to excellent ee value up to 99% and with selectivity factors up to 24.
Stereoselective Construction of Acyclic β,β-Disubstituted Enesulfinamides via Conjugate Addition of Organocuprates to α-Substituted α,β-Unsaturated <i>N</i>-Sulfinyl Ketimines
作者:Nuermaimaiti Yisimayili、Chong-Lin Zhu、Tao Liu、Yun Yao、Chong-Dao Lu
DOI:10.1021/acs.orglett.3c02060
日期:2023.7.28
In the presence of boron trifluoride, conjugate addition of organocuprates to α-substituted α,β-unsaturated N-tert-butanesulfinyl ketimines provides facile access to acyclic β,β-disubstituted enesulfinamides with high ratios of geometric isomers. Diverse and challenging to synthesize, multisubstituted aza-enolates bearing two electronically and sterically similar β-substituents, which are important
The present invention provides a solubilizing agent that can give solubility or dispersibility in resins to copper-containing phosphorus compounds, and a composition containing the solubilizing agent. The solubilizing agent of the invention comprises a compound represented by the following general formula (100) having a main chain with an oxyalkylene unit.
[wherein R
111
represents hydrogen or a b-valent organic group, R
112
represents C2-4 alkylene, R
113
represents hydrogen, alkyl, aryl or acyl, a represents an integer of 1-50 and b represents an integer of 1-4.]