Synthesis of dehydroamino acids and peptides by dehydrosulfenylation. Rate enhancement using sulfenic acid trapping agents

Selective and mild oxidation of sulfides to sulfoxides by H2O2 using DBUH-Br3 as catalyst

“…The reaction was not completed within 24 h (Table 1, entry 6). Consequently, it was performed in different molar ratios of the catalyst in the presence of oxidant in order to obtain the optimum reaction conditions (Table 1, entries [1][2][3][4][5].…”

“…Sulfoxides are important intermediates in the synthesis of various natural products [1,2]. Omeprazole and Figpronil pesticides are two typical examples of extensive applications of these important intermediates in pharmaceutical and fine chemical industries [3].…”

The cis‐trans isomerization of N‐methyl‐α,β‐dehydroamino acids

“…. Methylation was performed by a modification of the method described by Rich and Tam 29, 30. The Z / E isomerization was performed by a modification of the method described in Ref 31…”

Immobilization of a vanadium complex onto functionalized nanoporous MCM‐41 and its application as a catalyst for the solvent‐free chemoselective oxidation of sulfide to sulfoxide

“…Sulfoxides are useful building blocks especially as chiral auxiliaries in organic synthesis . Sulfoxides are important intermediates in the synthesis of various natural products, and they also can play a key role in the activation of enzymes …”

“…[10,11] Sulfoxides are useful building blocks especially as chiral auxiliaries in organic synthesis. [12][13][14][15] Sulfoxides are important intermediates in the synthesis of various natural products, [16][17][18][19] and they also can play a key role in the activation of enzymes. [20] Although many of these methods are quite useful, there still remains much room for improvements especially in the case of the selectivity and eco-friendliness of the reactions.…”