General conjugate-addition method for the synthesis of enantiomerically pure lignans. Total synthesis of (-)- and (+)-burseran, (-)-dehydroxycubebin, (-)-trichostin, (-)-cubebin, (-)-5''-methoxyhinokinin, and (-)-hinokinin
Dithioacetal Exchange: A New Reversible Reaction for Dynamic Combinatorial Chemistry
作者:A. Gastón Orrillo、Andrea M. Escalante、Ricardo L. E. Furlan
DOI:10.1002/chem.201600208
日期:2016.5.10
Reversibility of dithioacetal bond formation is reported under acidic mild conditions. Its utility for dynamic combinatorialchemistry was explored by combining it with orthogonal disulfide exchange. In such a setup, thiols are positioned at the intersection of both chemistries, constituting a connecting node between temporally separated networks.
Dithioacetalization or thioetherification of benzyl alcohols using 9-mesityl-10-methylacridinium perchlorate photocatalyst
作者:Milan Pramanik、Khokan Choudhuri、Ashis Mathuri、Prasenjit Mal
DOI:10.1039/d0cc02352c
日期:——
We report herein the use of 9-mesityl-10-methylacridinium perchlorate as the visible-light photocatalyst for dithioacetalization or thioetherification of benzyl alcohols in one pot using aerial dioxygen as a terminal oxidant. EPR analysis and Stern–Volmer quenching studies helped to rationalize the single electron transfer (SET) mechanism.
Rewiring Chemical Networks Based on Dynamic Dithioacetal and Disulfide Bonds
作者:A. Gastón Orrillo、Agustina La-Venia、Andrea M. Escalante、Ricardo L. E. Furlan
DOI:10.1002/chem.201705654
日期:2018.3.2
The control of the connectivity between nodes of synthetic networks is still largely unexplored. To address this point we take advantage of a simple dynamicchemical system with two exchange levels that are mutually connected and can be activated simultaneously or sequentially. Dithioacetals and disulfides can be exchanged simultaneously under UV light in the presence of a sensitizer. Crossover reactions
Benzylic Intermolecular Carbon−Carbon Bond Formation by Selective Anodic Oxidation of Dithioacetals
作者:Kazuhiro Chiba、Rikiya Uchiyama、Shokaku Kim、Yoshikazu Kitano、Masahiro Tada
DOI:10.1021/ol015734a
日期:2001.4.1
Novel anodic intermolecular carbon-carbon bond formation has been accomplished by the oxidative carbon-sulfur bond fission of benzylic dithioacetals to give a wide variety of aromatic compounds. The substitution reaction successfully took place by the selective anodic oxidation of a sulfur atom of a dithioacetal. Stepwise double-substitution reactions were also achieved by the regulation of oxidation potential.
REHNBERG, NICOLA;MAGNUSSON, GORAN, J. ORG. CHEM., 55,(1990) N4, C. 4340-4349