36814-62-7Relevant articles and documents
5-(Alkynyl)dibenzothiophenium Triflates: Sulfur-Based Reagents for Electrophilic Alkynylation
Waldecker, Bernd,Kraft, Finn,Golz, Christopher,Alcarazo, Manuel
, p. 12538 - 12542 (2018)
The synthesis of a series of 5-(alkynyl) dibenzothiophenium triflates, prepared from dibenzo[b,d]thiophene 5-oxide and the corresponding trimethylsilyl-substituted alkynes is reported. Their structures were determined by X-ray crystallography, and their reactivities as electrophilic alkynylation reagents evaluated. Their broad substrate scope and functional-group tolerance illustrate their potential to become an alternative to the broadly used EBX reagents. Isotope labeling studies reveal that alkynyldibenzothiophenium salts may undergo attack by nucleophiles at either the α- or β-carbon atom depending on the nature of their substitution pattern. Subsequent elimination of the dibenzothiophene unit and 1,2-migration of one of the groups (in case of β-attack) affords the desired alkynes.
Unsaturated thioacetic acids as novel mechanism-based inhibitors of peptidylglycine α-hydroxylating monooxygenase
Casara,Ganzhorn,Philippo,Chanal,Danzin
, p. 393 - 396 (2007/10/03)
Several unsaturated thioacetic acids were synthesized as potential mechanism-based inhibitors of peptidylglycine α-hydroxylating monooxygenase (PHM) prepared from horse serum. Trans-styrylthioacetic acid produced potent time-dependent inhibition of PHM. Potential mechanisms are proposed to explain PHM inactivation by unsaturated thioacetic acids.