Trithioorthoester Exchange and Metathesis: New Tools for Dynamic Covalent Chemistry
作者:Michael Bothe、A. Gastón Orrillo、Ricardo L. E. Furlan、Max von Delius
DOI:10.1055/s-0039-1690992
日期:2019.10
acid-catalyzed exchangereaction of trithioorthoesters with thiols. We found that trithioorthoester exchange occurs readily in various solvents in the presence of stoichiometric amounts of strong Bronsted acids or catalytic amounts of certain Lewis acids. The scope of the exchangereaction was explored with various substrates, and conditions were identified that permit clean metathesis reactions between two
Efficient transformations of trithio- and triseleno-orthoesters into ketene dithio- and diseleno-acetals
作者:K. M. Nsunda、L. Hevesi
DOI:10.1039/c39850001000
日期:——
Sequential treatment of trithio- and triseleno-orthoesters with a Lewis acid followed by a base leads to ketenedithio- and diseleno-acetals in good yield; SnCl4 or TiCl4 and Pri2EtN or Et3N are the most efficient reagents.
Substituted (4Z)-4-benzylidene-2-methyl-4H-1,3-benzothiazines (1) and (4Z)-2-ethyl-4-benzylidene-4H-1,3-benzothiazines (2) were synthesized by direct stereoselective reactions of S-phenyl ethanethioate or S-phenyl propane-thioate with substituted benzyl nitriles in the presence of triflic anhydride.
An Attempted Fries Reaction with Thiolesters. The Formation of Trithioörthoesters<sup>1</sup>
作者:D. S. Tarbell、A. H. Herz
DOI:10.1021/ja01103a044
日期:1953.4
One-step synthesis of complex cyclopropanone phenylthioketals by the reaction of sulfur-stabilized anions with ketene bis(phenylthio)acetal
作者:Theodore Cohen、Robert B. Weisenfeld、Richard E. Gapinski